Rupert  Beatty

Rupert Beatty

1666068667

Custom UITextFields Effects inspired By Codrops, Built using Swift

TextFieldEffects

I fell in love with the text inputs effects in this article. As an exercise I decided to recreate as many of them as I can using Swift (some of them have a personal touch).

Currently it features the following effects from the article:

  •  Kaede
  •  Hoshi
  •  Jiro
  •  Isao
  •  Minoru
  •  Yoko
  •  Madoka
  •  Akira
  •  Yoshiko

How they look

Kaede

Kaede.gif

Hoshi

Hoshi.gif

Jiro

Jiro.gif

Isao

Isao.gif

Minoru

Minoru.gif

Yoko

Yoko.gif

Madoka

Madoka.gif

Akira

Akira.gif

Yoshiko

Yoshiko.gif

Installation

  • Looking for Swift 2.3 support? Check out the 1.2.0 tag.
  • Looking for Swift 2.1 support? Check out the 1.1.1 tag.
  • Looking for Swift 1.2 support? Check out the swift-1.2 branch.

Manual

The easiest way to install this framework is to drag and drop the TextFieldEffects/TextFieldEffects folder into your project. This also prevents the frameworks problem in iOS where the IBInspectable and IBDesignable are stripped out.

CocoaPods

Add the following to your Podfile:

use_frameworks!
pod 'TextFieldEffects'

Carthage

Add the following to your Cartfile:

github 'raulriera/TextFieldEffects'

How to use them

Every effect is properly documented in the source code, this is the best way to both understand and see what they do. There is also an example project included with all the effects and their settings.

Interface Builder

The library is a simple drop-in, as soon as you set your subclass to one of the effects and your module to TextFieldEffects you will be able to see all the IBDesignable settings in the storyboard.

Code

If you like to get your hands dirty, you can use them just like you would normally use any UITextField

let textField = KaedeTextField(frame: textFieldFrame)
textField.placeholderColor = .darkGrayColor()
textField.foregroundColor = .lightGrayColor()

view.addSubView(textField)

Is that simple.

Created by

Raul Riera, @raulriera

Download Details:

Author: Raulriera
Source Code: https://github.com/raulriera/TextFieldEffects 
License: MIT license

#swift #animation #effective #textfield 

Custom UITextFields Effects inspired By Codrops, Built using Swift
Layne  Fadel

Layne Fadel

1663941240

10 Popular PostgreSQL Optimization Libraries

In this Postgres article, let's learn about Optimization: 10 Popular PostgreSQL Optimization Libraries

Table of contents:

  • pg_flame - A flamegraph generator for query plans.
  • PgHero - PostgreSQL insights made easy.
  • pgtune - PostgreSQL configuration wizard.
  • pgtune - Online version of PostgreSQL configuration wizard.
  • pgconfig.org - PostgreSQL Online Configuration Tool (also based on pgtune).
  • PoWA - PostgreSQL Workload Analyzer gathers performance stats and provides real-time charts and graphs to help monitor and tune your PostgreSQL servers.
  • pg_web_stats - Web UI to view pg_stat_statements.
  • TimescaleDB Tune - a program for tuning a TimescaleDB database to perform its best based on the host's resources such as memory and number of CPUs.

What is PostgreSQL?

PostgreSQL is a powerful, open source object-relational database system that uses and extends the SQL language combined with many features that safely store and scale the most complicated data workloads. The origins of PostgreSQL date back to 1986 as part of the POSTGRES project at the University of California at Berkeley and has more than 30 years of active development on the core platform.

PostgreSQL has earned a strong reputation for its proven architecture, reliability, data integrity, robust feature set, extensibility, and the dedication of the open source community behind the software to consistently deliver performant and innovative solutions. PostgreSQL runs on all major operating systems, has been ACID-compliant since 2001, and has powerful add-ons such as the popular PostGIS geospatial database extender. It is no surprise that PostgreSQL has become the open source relational database of choice for many people and organisations.

What is PostgreSQL query optimization?

Just like any advanced relational database, PostgreSQL uses a cost-based query optimizer that tries to turn your SQL queries into something efficient that executes in as little time as possible


10 Popular PostgreSQL Optimization Libraries

  1. pg_flame

A flamegraph generator for Postgres EXPLAIN ANALYZE output.
Installation

Homebrew

You can install via Homebrew with the follow command:

$ brew install mgartner/tap/pg_flame

Download pre-compiled binary

Download one of the compiled binaries in the releases tab. Once downloaded, move pg_flame into your $PATH.

Docker

Alternatively, if you'd like to use Docker to build the program, you can.

$ docker pull mgartner/pg_flame

Build from source

If you'd like to build a binary from the source code, run the following commands. Note that compiling requires Go version 1.13+.

$ git clone https://github.com/mgartner/pg_flame.git
$ cd pg_flame
$ go build

A pg_flame binary will be created that you can place in your $PATH.

View on GitHub


2.  PgHero

A performance dashboard for Postgres


Documentation

PgHero is available as a Docker image, Linux package, and Rails engine.

View on GitHub


3.  pgtune

pgtune takes the wimpy default postgresql.conf and expands the database server to be as powerful as the hardware it's being deployed on.

Installation/Usage

Source installation

There is no need to build/compile pgtune, it is a Python script. Extracting the tarball to a convenient location is sufficient. Note that you will need the multiple pg_settings-<version>_<architecture> files included with the program too, pgtune can't work without those.

RPM Installation

The RPM package installs:

  • The pgtune binary under/usr/bin
  • Documents in /usr/share/doc/pgtune-$version
  • Setting files in /usr/share/pgtune

Using pgtune

pgtune works by taking an existing postgresql.conf file as an input, making changes to it based on the amount of RAM in your server and suggested workload, and output a new file.

Here's a sample usage:

pgtune -i $PGDATA/postgresql.conf -o $PGDATA/postgresql.conf.pgtune

pgtune --help will give you additional usage information. These are the current parameters:

  • -i or --input-config : Specifies the current postgresql.conf file.
  • -o or --output-config : Specifies the file name for the new postgresql.conf file.
  • -M or --memory: Use this parameter to specify total system memory. If not specified, pgtune will attempt to detect memory size.
  • -T or --type : Specifies database type. Valid options are: DW, OLTP, Web, Mixed, Desktop
  • -P or --platform : Specifies platform, defaults to the platform running the program. Valid options are Windows, Linux, and Darwin (Mac OS X).
  • -c or --connections: Specifies number of maximum connections expected. If not specified, it depends on database type.
  • -D or --debug : Enables debugging mode.
  • -S or --settings: Directory where settings data files are located at. Defaults to the directory where the script is being run from. The RPM package includes a patch to use the correct location these files were installed into.

View on GitHub


4.  PgTune

Pgtune - tuning PostgreSQL config by your hardware


Tuning PostgreSQL config by your hardware. Based on original pgtune. Illustration by Kate.

Development

Web app build on top of middleman. To start it in development mode, you need install ruby, node.js and run in terminal:

$ bundle # get all ruby deps
$ yarn # get all node.js deps
$ middleman server # start server on 4567 port

View on GitHub


5.  pgconfig

Web Based PostgreSQL configuration tool

View on GitHub


6.  Powa

You can try powa at demo-powa.anayrat.info. Just click "Login" and try its features! Note that in order to get interesting metrics, resources have been limited on this server (2 vCPU, 384MB of RAM and 150iops for the disks). Please be patient when using it.

Thanks to Adrien Nayrat for providing it.

PoWA (PostgreSQL Workload Analyzer) is a performance tool for PostgreSQL 9.4 and newer allowing to collect, aggregate and purge statistics on multiple PostgreSQL instances from various :ref:`stat_extensions`.

Depending on your needs, you can either use the provided background worker (requires a PostgreSQL restart, and more suited for single-instance setups), or the provided :ref:`powa_collector` daemon (does not require a PostgreSQL restart, can gather performance metrics from multiple instances, including standby).

Main components

  • PoWA-archivist is the PostgreSQL extension, collecting statistics.
  • PoWA-collector is the daemon that gather performance metrics from remote PostgreSQL instances (optional) on a dedicated repository server.
  • PoWA-web is the graphical user interface to powa-collected metrics.
  • Stat extensions are the actual source of data.
  • PoWA is the whole project.

View on GitHub


7.  Pg_web_stats

Web UI to view pg_stat_statements

Features

  • Sorting by any column from pg_stat_statements
  • Filtering by database or user
  • Highlighting important queries && hidding not important queries

Installation

  1. Prepare your PG setup: enable the pg_stat_statements extension and execute CREATE EXTENSION pg_stat_statements inside the database you want to inspect. Hint: there is an awesome article about pg_stat_statements in russian.
  2. Clone the repo
  3. Fill config.yml.example with your credentians and save it as config.yml
  4. Start the app: rake server (or run rake console to have command line)
  5. ???
  6. PROFIT

Mount inside a rails app

Add this line to your application's Gemfile:

gem 'pg_web_stats', require: 'pg_web_stats_app'

Or if gem is not released yet

gem 'pg_web_stats', git: 'https://github.com/shhavel/pg_web_stats', require: 'pg_web_stats_app'

And then execute:

$ bundle

Create file config/initializers/pg_web_stats.rb

# Configure database connection
config_hash = YAML.load_file(Rails.root.join('config', 'database.yml'))[Rails.env]
PG_WEB_STATS = PgWebStats.new(config_hash)

# Restrict access to pg_web_stats with Basic Authentication
# (or use any other authentication system).
PgWebStatsApp.use(Rack::Auth::Basic) do |user, password|
  password == "secret"
end

Add to routes.rb

mount PgWebStatsApp, at: '/pg_stats'

View on GitHub


8.  timescaledb-tune

timescaledb-tune is a program for tuning a TimescaleDB database to perform its best based on the host's resources such as memory and number of CPUs. It parses the existing postgresql.conf file to ensure that the TimescaleDB extension is appropriately installed and provides recommendations for memory, parallelism, WAL, and other settings.

Getting started

You need the Go runtime (1.12+) installed, then simply go install this repo:

$ go install github.com/timescale/timescaledb-tune/cmd/timescaledb-tune@main

It is also available as a binary package on a variety systems using Homebrew, yum, or apt. Search for timescaledb-tools.

Using timescaledb-tune

By default, timescaledb-tune attempts to locate your postgresql.conf file for parsing by using heuristics based on the operating system, so the simplest invocation would be:

$ timescaledb-tune

You'll then be given a series of prompts that require minimal user input to make sure your config file is up to date:

Using postgresql.conf at this path:
/usr/local/var/postgres/postgresql.conf

Is this correct? [(y)es/(n)o]: y
Writing backup to:
/var/folders/cr/zpgdkv194vz1g5smxl_5tggm0000gn/T/timescaledb_tune.backup201901071520

shared_preload_libraries needs to be updated
Current:
#shared_preload_libraries = 'timescaledb'
Recommended:
shared_preload_libraries = 'timescaledb'
Is this okay? [(y)es/(n)o]: y
success: shared_preload_libraries will be updated

Tune memory/parallelism/WAL and other settings? [(y)es/(n)o]: y
Recommendations based on 8.00 GB of available memory and 4 CPUs for PostgreSQL 11

Memory settings recommendations
Current:
shared_buffers = 128MB
#effective_cache_size = 4GB
#maintenance_work_mem = 64MB
#work_mem = 4MB
Recommended:
shared_buffers = 2GB
effective_cache_size = 6GB
maintenance_work_mem = 1GB
work_mem = 26214kB
Is this okay? [(y)es/(s)kip/(q)uit]:

View on GitHub


PostgreSQL Optimization FAQ

  • What is PostgreSQL query optimization?

Just like any advanced relational database, PostgreSQL uses a cost-based query optimizer that tries to turn your SQL queries into something efficient that executes in as little time as possible

  • How do I optimize a table in PostgreSQL?

4 Ways To Optimise PostgreSQL Database With Millions of Data

  1. speed up database operations.
  2. reduce the load.
  3. reduce the size of the database.
  4. take advantage of the out-of-the-box feature to help with overall database optimization.
  • What is database performance optimization?

The goal of database performance tuning is to minimize the response time of your queries by making the best use of your system resources. The best use of these resources involves minimizing network traffic, disk I/O, and CPU time.

  • How make PostgreSQL query run faster?

Some of the tricks we used to speed up SELECT-s in PostgreSQL: LEFT JOIN with redundant conditions, VALUES, extended statistics, primary key type conversion, CLUSTER, pg_hint_plan + bonus.

  • Can Postgres handle 1 billion rows?

As commercial database vendors are bragging about their capabilities we decided to push PostgreSQL to the next level and exceed 1 billion rows per second to show what we can do with Open Source. To those who need even more: 1 billion rows is by far not the limit - a lot more is possible.


Related videos:

PostgreSQL Query Optimization Techniques


Related posts:

#postgresql 

10 Popular PostgreSQL Optimization Libraries

Los Efectos Destacados Disponibles En Xamarin Community Toolkit

En esta publicación, veremos los efectos destacados disponibles en Xamarin Community Toolkit y cómo usarlos. Esta publicación es parte de Xamarin Community Toolkit - Tutorial Series , visite la publicación para obtener información sobre Xamarin Community Toolkit. El kit de herramientas de la comunidad de Xamarin es una colección de elementos reutilizables para el desarrollo móvil con Xamarin.Forms, que incluye animaciones, comportamientos, convertidores, efectos y ayudantes. Simplifica y demuestra las tareas comunes de los desarrolladores al crear aplicaciones para iOS, Android, macOS, WPF y Universal Windows Platform (UWP) con Xamarin.Forms. 

Parte de codificación

Pasos

  1. Paso 1: creación de nuevos proyectos de Xamarin.Forms.
  2. Paso 2: configurar el kit de herramientas de la comunidad de Xamarin en Xamarin.Forms .Net Standard Project.
  3. Paso 3: Implementación de efectos usando Xamarin Community Toolkit.

Paso 1: creación de nuevos proyectos de Xamarin.Forms

Cree un nuevo proyecto seleccionando Nuevo proyecto à Seleccione Xamarin Cross Platform App y haga clic en Aceptar.

Nota: la versión de Xamarin.Forms debe ser superior a 5.0.

Luego, seleccione las plataformas Android e iOS como se muestra a continuación con la estrategia de uso compartido de código como PCL o .Net Standard y haga clic en Aceptar.

Paso 2: Configuración del escáner en Xamarin.Forms .Net Standard Project

En este paso, veremos cómo configurar el complemento.

  • Abra Nuget Manager en Visual Studio Solution haciendo clic derecho en la solución y seleccione "Administrar paquetes Nuget".
     

  • Luego seleccione "Xamarin Community Toolkit" y verifique todos los proyectos en la solución, instale el

    complemento

Paso 3: Implementación de efectos usando Xamarin Community Toolkit.

En este paso, veremos cómo implementar los efectos destacados que se ofrecen en Xamarin Community Toolkit. Aquí, hemos explicado la implementación de Safe Area Effect, Shadow Effect, Life Cycle Effect y StatusBar Effect.

  • Abra su archivo de diseño XAML y agregue el siguiente espacio de nombres para utilizar las vistas en la pantalla.
xmlns:xct="http://xamarin.com/schemas/2020/toolkit"

C#

efecto de área segura

  • SafeAreaEffect es un efecto que se puede agregar a cualquier elemento a través de una propiedad adjunta para indicar si ese elemento debe tener en cuenta las áreas seguras actuales o no.
  • Esta es un área de la pantalla que es segura para todos los dispositivos que usan iOS 11 y superior.

Específicamente, ayudará a asegurarse de que las esquinas redondeadas del dispositivo, el indicador de inicio o la carcasa del sensor en un iPhone X no recorten el contenido. El efecto solo se dirige a iOS, lo que significa que en otras plataformas no hace nada.

Propiedades

<StackLayout xct:SafeAreaEffect.SafeArea="True" BackgroundColor="White"> </StackLayout>

C#

Area segura

Indica qué áreas seguras se deben tener en cuenta para este elemento

Antes de aplicar el efecto

Después de aplicar el efecto

efecto de sombra

Se usa para tener un efecto de sombra para las vistas de Xamarin Forms y tenemos cinco propiedades que deben entenderse para usar este efecto.

Propiedades

  1. Color: Es el color que tendrá la sombra.
  2. Opacidad: Con esta propiedad puedes controlar la opacidad que quieres en la sombra.
  3. Radio: Es responsable de manejar el desenfoque en la sombra.
  4. OffsetX/OffsetY: Nos permite definir el desplazamiento que tendrá la sombra, por lo tanto OffsetX se encarga de especificar la distancia del desplazamiento horizontal, mientras que OffsetY del desplazamiento vertical.

En este ejemplo, actualicé el efecto de sombra para el control de imagen como en el siguiente bloque de código

<Image
	x:Name="img"
	HeightRequest="150"
	Margin="10"
	xct:ShadowEffect.Color="Green"
	xct:ShadowEffect.OffsetY="15"
	Source="https://shorturl.at/qsvJ1">
</Image>

C#

Efecto del ciclo de vida

LifecycleEffect le permite determinar cuándo la plataforma asigna su renderizador a VisualElement. Se puede identificar mediante los controladores de eventos LifeCycleEffect.

<Image
	x:Name="img"
	HeightRequest="150"
	Margin="10"
	Source="https://shorturl.at/qsvJ1">
	<Image.Effects>
		<xct:LifecycleEffect Loaded="LifeCycleEffect_Loaded" Unloaded="LifeCycleEffect_Unloaded" />
	</Image.Effects>
</Image>

C#

private void LifeCycleEffect_Loaded(object sender, EventArgs e)
{
	Console.WriteLine("Image loaded...");
}

private void LifeCycleEffect_Unloaded(object sender, EventArgs e)
{
	Console.WriteLine("Image Unloaded...");
}

C#

Efecto de la barra de estado

  • Este efecto se usa para controlar el color de la barra de estado en la aplicación Xamarin Forms durante el tiempo de compilación o el tiempo de ejecución o los clics de botones similares. Es un código de una sola línea para ser útil para controlar.

En este ejemplo, crearemos un recurso de color en el archivo App.xaml como se muestra a continuación. Se actualizará más adelante de forma dinámica.

<Color x:Key="StatusBarColor">Firebrick</Color>

C#

Luego agregue la siguiente línea en el elemento raíz de su página XAML como DynamicResource

xct:StatusBarEffect.Color="{DynamicResource StatusBarColor}"

C#

Luego agregue los 3 botones como en la pantalla de muestra y actualice el color de su recurso dinámico al hacer clic en el botón como se muestra a continuación.

private void ButtonClicked(object sender, EventArgs e)
{
	Application.Current.Resources["StatusBarColor"] = ((Button)sender).TextColor;
}

C#

Código completo

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:xct="http://xamarin.com/schemas/2020/toolkit"
             x:Class="XamarinCommunityToolkit.EffectsSamplePage"
             xct:StatusBarEffect.Color="{DynamicResource StatusBarColor}">
    <ContentPage.Content>
        <StackLayout xct:SafeAreaEffect.SafeArea="True"
                     BackgroundColor="White">

            <Frame BackgroundColor="#2196F3"
                   Padding="24"
                   CornerRadius="0">
                <Label Text="Xamarin Forms Effects using XCT"
                       HorizontalTextAlignment="Center"
                       TextColor="White"
                       FontSize="36"/>
            </Frame>

            <Image
                x:Name="img"
                HeightRequest="150"
                Margin="10"
                xct:ShadowEffect.Color="Green"
                xct:ShadowEffect.OffsetY="15"
                Source="https://shorturl.at/qsvJ1">
                <Image.Effects>
                    <xct:LifecycleEffect Loaded="LifeCycleEffect_Loaded" Unloaded="LifeCycleEffect_Unloaded" />
                </Image.Effects>
            </Image>
            <Grid Padding="10">
                <Button Clicked="ButtonClicked" Text="Red" TextColor="Red" BorderColor="Red" BorderWidth="2" Grid.Column="0"/>
                <Button Clicked="ButtonClicked" Text="Green" TextColor="Green" BorderColor="Green" BorderWidth="2" Grid.Column="1"/>
                <Button Clicked="ButtonClicked" Text="Blue" TextColor="Blue" BorderColor="Blue" BorderWidth="2" Grid.Column="2"/>
            </Grid>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

C#

El XCT también ofrece otros tipos de efectos. Visite el siguiente enlace para obtener más ejemplos. https://github.com/xamarin/XamarinCommunityToolkit/tree/main/samples/XCT.Sample/Pages/Effects

Descargar Código

Puedes descargar el código desde GitHub. Si tienes dudas, no dudes en publicar un comentario. Si te gusta este artículo y te resulta útil, haz clic en Me gusta, comparte el artículo y destaca el repositorio en GitHub.

 Fuente: https://www.c-sharpcorner.com/article/xamarin-community-toolkit-effects/

#xamarin #community #toolkit #effective 

Los Efectos Destacados Disponibles En Xamarin Community Toolkit
高橋  花子

高橋 花子

1650410160

XamarinCommunityToolkitで利用可能な注目のエフェクト

この投稿では、XamarinCommunityToolkitで利用できる機能とその使用方法について説明します。この投稿はXamarinCommunityToolkit-Tutorial Seriesの一部です。投稿にアクセスして、XamarinCommunityToolkitについて知ってください。Xamarin Community Toolkitは、アニメーション、動作、コンバーター、エフェクト、ヘルパーなど、Xamarin.Formsを使用したモバイル開発用の再利用可能な要素のコレクションです。Xamarin.Formsを使用してiOS、Android、macOS、WPF、およびユニバーサルWindowsプラットフォーム(UWP)アプリを構築する際の一般的な開発者タスクを簡素化し、デモンストレーションします。 

コーディング部

手順

  1. ステップ1:新しいXamarin.Formsプロジェクトを作成します。
  2. ステップ2:Xamarin.Forms .NetStandardProjectでXamarinCommunityToolkitをセットアップします。
  3. ステップ3:XamarinCommunityToolkitを使用したエフェクトの実装。

ステップ1:新しいXamarin.Formsプロジェクトを作成する

[新しいプロジェクト]を選択して新しいプロジェクトを作成する[XamarinCrossPlatform App]を選択し、[OK]をクリックします。

注: Xamarin.Formsのバージョンは5.0より大きくする必要があります。

次に、以下に示すように、PCLまたは.Net Standardとしてコード共有戦略を使用してAndroidおよびiOSプラットフォームを選択し、[OK]をクリックします。

手順2:Xamarin.Forms .NetStandardProjectでスキャナーを設定する

このステップでは、プラグインのセットアップ方法を説明します。

  • ソリューションを右クリックして[Nugetパッケージの管理]を選択し、VisualStudioソリューションでNugetManagerを開きます。
     

  • 次に、「Xamarin Community Toolkit」を選択し、ソリューション内のすべてのプロジェクトを確認して、

    プラグイン

ステップ3:XamarinCommunityToolkitを使用したエフェクトの実装。

このステップでは、XamarinCommunityToolkitで提供される注目のエフェクトを実装する方法を説明します。ここでは、セーフエリア効果、シャドウ効果、ライフサイクル効果、ステータスバー効果の実装について説明しました。

  • XAMLデザインファイルを開き、次の名前空間を追加して、画面上のビューを利用します。
xmlns:xct="http://xamarin.com/schemas/2020/toolkit"

C#

SafeAreaEffect

  • SafeAreaEffectは、アタッチされたプロパティを介して任意の要素に追加できる効果であり、その要素が現在の安全領域を考慮に入れる必要があるかどうかを示します。
  • これは、iOS11以降を使用するすべてのデバイスにとって安全な画面の領域です。

具体的には、コンテンツが丸みを帯びたデバイスの角、ホームインジケーター、またはiPhone Xのセンサーハウジングによってクリップされないようにするのに役立ちます。この効果はiOSのみを対象とします。つまり、他のプラットフォームでは何もしません。

プロパティ

<StackLayout xct:SafeAreaEffect.SafeArea="True" BackgroundColor="White"> </StackLayout>

C#

安全地帯

この要素で考慮すべき安全な領域を示します

効果を適用する前に

効果を適用した後

ShadowEffect

これは、Xamarinフォームビューのシャドウ効果を持たせるために使用されます。この効果を使用するには、理解する必要のある5つのプロパティがあります。

プロパティ

  1. 色:それは影が持つ色です。
  2. 不透明度:このプロパティを使用すると、シャドウで必要な不透明度を制御できます。
  3. 半径:影のぼやけを処理する責任があります。
  4. OffsetX / OffsetY:シャドウが持つ変位を定義できるため、OffsetXは水平方向の変位の距離を指定し、OffsetYは垂直方向の変位を指定します。

この例では、次のコードブロックのように、画像コントロールのシャドウ効果を更新しました。

<Image
	x:Name="img"
	HeightRequest="150"
	Margin="10"
	xct:ShadowEffect.Color="Green"
	xct:ShadowEffect.OffsetY="15"
	Source="https://shorturl.at/qsvJ1">
</Image>

C#

ライフサイクル効果

LifecycleEffectを使用すると、VisualElementのレンダラーがプラットフォームによって割り当てられるタイミングを決定できます。これは、LifeCycleEffectイベントハンドラーを使用して識別できます。

<Image
	x:Name="img"
	HeightRequest="150"
	Margin="10"
	Source="https://shorturl.at/qsvJ1">
	<Image.Effects>
		<xct:LifecycleEffect Loaded="LifeCycleEffect_Loaded" Unloaded="LifeCycleEffect_Unloaded" />
	</Image.Effects>
</Image>

C#

private void LifeCycleEffect_Loaded(object sender, EventArgs e)
{
	Console.WriteLine("Image loaded...");
}

private void LifeCycleEffect_Unloaded(object sender, EventArgs e)
{
	Console.WriteLine("Image Unloaded...");
}

C#

ステータスバー効果

  • このエフェクトは、コンパイル時や実行時などのボタンクリック時にXamarinFormsアプリケーションのステータスバーの色を制御するために使用されます。制御に役立つのは1行のコードです。

この例では、以下のようにApp.xamlファイルにカラーリソースを作成します。後で動的に更新されます。

<Color x:Key="StatusBarColor">Firebrick</Color>

C#

次に、XAMLページのルート要素にDynamicResourceとして次の行を追加します

xct:StatusBarEffect.Color="{DynamicResource StatusBarColor}"

C#

次に、サンプル画面のように3つのボタンを追加し、以下のようにボタンクリックで動的リソースの色を更新します。

private void ButtonClicked(object sender, EventArgs e)
{
	Application.Current.Resources["StatusBarColor"] = ((Button)sender).TextColor;
}

C#

完全なコード

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:xct="http://xamarin.com/schemas/2020/toolkit"
             x:Class="XamarinCommunityToolkit.EffectsSamplePage"
             xct:StatusBarEffect.Color="{DynamicResource StatusBarColor}">
    <ContentPage.Content>
        <StackLayout xct:SafeAreaEffect.SafeArea="True"
                     BackgroundColor="White">

            <Frame BackgroundColor="#2196F3"
                   Padding="24"
                   CornerRadius="0">
                <Label Text="Xamarin Forms Effects using XCT"
                       HorizontalTextAlignment="Center"
                       TextColor="White"
                       FontSize="36"/>
            </Frame>

            <Image
                x:Name="img"
                HeightRequest="150"
                Margin="10"
                xct:ShadowEffect.Color="Green"
                xct:ShadowEffect.OffsetY="15"
                Source="https://shorturl.at/qsvJ1">
                <Image.Effects>
                    <xct:LifecycleEffect Loaded="LifeCycleEffect_Loaded" Unloaded="LifeCycleEffect_Unloaded" />
                </Image.Effects>
            </Image>
            <Grid Padding="10">
                <Button Clicked="ButtonClicked" Text="Red" TextColor="Red" BorderColor="Red" BorderWidth="2" Grid.Column="0"/>
                <Button Clicked="ButtonClicked" Text="Green" TextColor="Green" BorderColor="Green" BorderWidth="2" Grid.Column="1"/>
                <Button Clicked="ButtonClicked" Text="Blue" TextColor="Blue" BorderColor="Blue" BorderWidth="2" Grid.Column="2"/>
            </Grid>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

C#

他のタイプのエフェクトも提供するXCT。その他のサンプルについては、以下のリンクにアクセスしてください。https://github.com/xamarin/XamarinCommunityToolkit/tree/main/samples/XCT.Sample/Pages/Effects

コードをダウンロード

コードはGitHubからダウンロードできます。疑問がある場合は、コメントを投稿してください。この記事が気に入って、役立つ場合は、GitHubで記事を共有し、リポジトリにスターを付けてください。

 ソース:https ://www.c-sharpcorner.com/article/xamarin-community-toolkit-effects/

#xamarin #community #toolkit #effective 

XamarinCommunityToolkitで利用可能な注目のエフェクト
Zac Efron

Zac Efron

1649144319

How Effective Web Solutions Measures Results?

Effective Web Solutions takes pride in its capacity to assess results when it comes to digital marketing. They not only measure their own performance, but they also compare it to that of their competitors. As the world of automation and artificial intelligence takes off, the importance of digital marketing, as well as the necessity for successful online marketing organizations, is expected to expand. But how do they assess success? Continue reading to find out. Here are a few of the most important ways they do it.

Social media marketing

Social media is one of the fastest growing areas of online marketing. More individuals than ever before are interacting internationally and expressing their opinions and views about products, businesses, and services. With the use of social media, ESP Inspire can help your company break into new social circles. Creating an effective social media marketing plan needs knowledge and consistency. Here are some things to think about if you want to improve your social media presence. You may start constructing a social media marketing plan once you've determined your target audience.

Planning and implementing the appropriate message is one of the most critical phases in social media marketing. The main distinction between social media marketing and traditional forms of marketing is that social media channels allow the customer more influence over the message. You have control over the message and the substance in other kinds of marketing, but not on social media. The purpose of social media marketing is to get your company's name out there and in front of the proper individuals. It's important to realize that your company isn't only communicating to your target demographic, regardless of the media. They're going to make a big deal out of you!

Social media is becoming more widely used and has established itself as a vital route of communication between consumers and businesses. It links companies with their current and potential consumers. The company may use social media to interact with new and returning consumers. You may communicate directly with your consumers on social media and build a long-lasting brand. Social media is more accessible than ever before, and it's a very cost-effective way to communicate. To make your business stand out, Effective Web Solutions can create a social media marketing plan.

Offsite optimization

Offsite optimization is a crucial component of search engine optimization. To drive visitors and boost site authority, this method entails link building and smart placement. Offsite SEO has several advantages and may be quite valuable to a company. Creating and maintaining high-quality links is the greatest approach to ensure that your website ranks highly for the keywords that are most relevant to your business. Offshore optimization should be a priority for both onshore and offsite websites in effective web solutions.

Off-site optimization for a website entails a number of steps. It's a time-consuming operation that necessitates high-quality backlinks. Fortunately, there are a plethora of off-site optimization services available to assist. Continue reading to find out more about off-site SEO. You'll be pleased you took the time to do so. Some of the advantages of off-site SEO are as follows:

Increased website traffic is an important aspect of search engine optimization. Websites that are well-optimized generate more revenue and customers. Users who learn about companies and goods through search engines are more inclined to tell their friends about them. Offsite SEO methods are equally as vital as on-site SEO strategies. You can communicate to search engines that your material is valuable and useful by optimizing your pages for them.

Building links to your website is an important part of offsite SEO tactics. Link building is a crucial component of any digital marketing plan and an important aspect of SEO. It entails spreading the word about your articles and other stuff. This aids in the development of your backlink profile and the enhancement of your organic SEO rankings. Backlinks should be created for you by a competent website optimization business. This may be accomplished by producing a newsletter or a blog. It may also be done with the help of a spreadsheet application in some circumstances.

SEO

The first step in achieving exposure in search engine result pages is to create an SEO-friendly website. Web crawlers are used by search engines to index your sites and deliver relevant results. These crawlers are designed to operate with SEO web solutions, making your website SEO-friendly. Not every technology is designed with SEO in mind. Here are some suggestions for making your website more visible. Continue reading to find out more about SEO web solutions. Let's have a look at the various approaches.

When it comes to merging SEO with web design, there are several aspects to consider. The design must take into account the site's overall optimization. Content must be allocated by the designer, and marketing calls to action must be accommodated by the programmer. Finally, the SEO professional must engage with the design team to ensure that everything runs properly. The SEO professional will work with the entire team to seamlessly execute the overall look and feel of the site once the design and development teams have agreed on it.

ESP Inspire

ESP Inspire is a digital marketing firm that combines strategy, design, and technology in its work. Their strategy is built on the demands of their clients and the goals of their companies. ESP Inspire, a web development agency situated in California, is a strategic digital marketing firm. They focus on e-commerce, social media marketing, and B2B businesses with limited resources. Stealth Dicing, Makr Furniture, ISS, Remote Face, GDSI, and The Splash Lab are among the clients. The firm also collaborates with non-profit groups on initiatives.

#websolutions #effective #seo #smm #ppc #digitalmarketing #webdevelopement #webdesign #ecommercewebsite #maintenance 

How Effective Web Solutions Measures Results?
Franz  Becker

Franz Becker

1648890000

TimescaleDB Tune: A Program for Tuning TimescaleDB Databases

timescaledb-tune

timescaledb-tune is a program for tuning a TimescaleDB database to perform its best based on the host's resources such as memory and number of CPUs. It parses the existing postgresql.conf file to ensure that the TimescaleDB extension is appropriately installed and provides recommendations for memory, parallelism, WAL, and other settings.

Getting started

You need the Go runtime (1.12+) installed, then simply go install this repo:

$ go install github.com/timescale/timescaledb-tune/cmd/timescaledb-tune@main

It is also available as a binary package on a variety systems using Homebrew, yum, or apt. Search for timescaledb-tools.

Using timescaledb-tune

By default, timescaledb-tune attempts to locate your postgresql.conf file for parsing by using heuristics based on the operating system, so the simplest invocation would be:

$ timescaledb-tune

You'll then be given a series of prompts that require minimal user input to make sure your config file is up to date:

Using postgresql.conf at this path:
/usr/local/var/postgres/postgresql.conf

Is this correct? [(y)es/(n)o]: y
Writing backup to:
/var/folders/cr/zpgdkv194vz1g5smxl_5tggm0000gn/T/timescaledb_tune.backup201901071520

shared_preload_libraries needs to be updated
Current:
#shared_preload_libraries = 'timescaledb'
Recommended:
shared_preload_libraries = 'timescaledb'
Is this okay? [(y)es/(n)o]: y
success: shared_preload_libraries will be updated

Tune memory/parallelism/WAL and other settings? [(y)es/(n)o]: y
Recommendations based on 8.00 GB of available memory and 4 CPUs for PostgreSQL 11

Memory settings recommendations
Current:
shared_buffers = 128MB
#effective_cache_size = 4GB
#maintenance_work_mem = 64MB
#work_mem = 4MB
Recommended:
shared_buffers = 2GB
effective_cache_size = 6GB
maintenance_work_mem = 1GB
work_mem = 26214kB
Is this okay? [(y)es/(s)kip/(q)uit]:

If you have moved the configuration file to a different location, or auto-detection fails (file an issue please!), you can provide the location with the --conf-path flag:

$ timescaledb-tune --conf-path=/path/to/postgresql.conf

At the end, your postgresql.conf will be overwritten with the changes that you accepted from the prompts.

Other invocations

If you want recommendations for a specific amount of memory and/or CPUs:

$ timescaledb-tune --memory="4GB" --cpus=2

If you want to set a specific number of background workers (timescaledb.max_background_workers):

$ timescaledb-tune --max-bg-workers=16

If you have a dedicated disk for WAL, or want to specify how much of a shared disk should be used for WAL:

$ timescaledb-tune --wal-disk-size="10GB"

If you want to accept all recommendations, you can use --yes:

$ timescaledb-tune --yes

If you just want to see the recommendations without writing:

$ timescaledb-tune --dry-run

If there are too many prompts:

$ timescaledb-tune --quiet

And if you want to skip all prompts and get quiet output:

$ timescaledb-tune --quiet --yes

And if you want to append the recommendations to the end of your conf file instead of in-place replacement:

$ timescaledb-tune --quiet --yes --dry-run >> /path/to/postgresql.conf

Restoring backups

timescaledb-tune makes a backup of your postgresql.conf file each time it runs (without the --dry-run flag) in your temp directory. If you find that the configuration given is not working well, you can restore a backup by using the --restore flag:

$ timescaledb-tune --restore
Using postgresql.conf at this path:
/usr/local/var/postgres/postgresql.conf

Is this correct? [(y)es/(n)o]: y
Available backups (most recent first):
1) timescaledb_tune.backup201901222056 (14 hours ago)
2) timescaledb_tune.backup201901221640 (18 hours ago)
3) timescaledb_tune.backup201901221050 (24 hours ago)
4) timescaledb_tune.backup201901211817 (41 hours ago)

Use which backup? Number or (q)uit: 1
Restoring 'timescaledb_tune.backup201901222056'...
success: restored successfully

Contributing

We welcome contributions to this utility, which like TimescaleDB is released under the Apache2 Open Source License. The same Contributors Agreement applies; please sign the Contributor License Agreement (CLA) if you're a new contributor.


Author: timescale
Source Code: https://github.com/timescale/timescaledb-tune
License: Apache-2.0 License

#timescaledb 

TimescaleDB Tune: A Program for Tuning TimescaleDB Databases
Gerhard  Brink

Gerhard Brink

1624825860

What are the Best Steps to Effective Data Classification?

Data protection is not only a legal necessity. It is essential for an organization’s survival and profitability. Nowadays, storage has become cheap, and organizations have become data hoarders. And even one day will come when they’ll get around mining all of those data and look for something useful.

But, again, data hoarding causes serious issues. And most of what is collected may become redundant, old, or when it is not touched for years.

Moreover, storage might be cheap, but it is not free. And storing a huge amount of data might cost you and, more importantly, increases your risk.

So, suppose your sensitive data is stored digitally, which includes intellectual property, personally identifiable data on the customers or employees, protected health information or financial account information, and credit card details. In that case, these needs are to be properly secured.

So how to protect your data?

What is data classification?

Here are the seven effective steps to Data Classification

#big data #latest news #what are the best steps to effective data classification? #effective data classification #best #effective

What are the Best Steps to Effective Data Classification?
Jack Forbes

Jack Forbes

1620388501

9 effective project management software for your team

Project management does not have to be a difficult task if you have the right tools. Meeting deadlines, completing assignments, and paying attention to your team would no longer be a can of worms for you if you have the best project management apps. And if you follow this list of free project management software/tools for increased efficiency, you won’t have to pay a dime.

These best project planning tools will make your life easier. They’re also completely free!

  • Freedcamp: The project management software is visually appealing, with a task and kanban view, improved connectivity, a large number of features, limitless storage, unlimited projects, and unlimited users.

  • Casual: This project management software uses flowcharts to creatively organize the project. They deliver a 14-day free trial. All you have to do now is register. If you like the app, you can upgrade to other plans.

  • Taiga.io: For unlimited public projects and one private project, the software is free. The best part about the software is that the free edition retains all of its functionality.

  • Zoho Projects: In Zoho Projects, you can add as many users as you want. There are no other limitations in the unpaid version if you forget the 10 MB capacity limit. You will pay $25 a month to upgrade your plan.

  • 2 Plan Project Management Software: There are three sections of the software package:

Jobs 2-task management board focused on Scrum (used in projects consisting of a single team). Work is similar to Trello in that it uses the Kanban method and can develop into a comprehensive work chart
2-Plan Team is a web-based application with a variety of hosting options.
2-Plan Desktop is a project management software programme (integrates seamlessly)

  • Asana has taken the top spot because it is one of the most widely used project management software in the world of industry (1.4 million users and 140,000 customers). You can use the tool for no cost (up to 15 users).

  • MeisterTask allows you to build an infinite number of tasks and users. MeisterTask also has iPad and iPhone applications, as well as free integrations with Google Drive, Zendesk, GitHub, and Dropbox.

  • Orangescrum: The project management software is free and hosted locally. The basis for resource management and agile growth is laid by Orangescrum. The local software is free, but the cloud version starts at $9 a month.

  • Bitrix24: Bitrix24 is totally free for any number of users, but storage is limited to 5GB per month. You may, however, upgrade the plan for $39 a month.

Is your project management becoming increasingly knotted? These best project planning tools will make your life easier. They’re also completely free! Learn everything there is to know about these tools.

**Effective Project Management Software For Your Team
**

#effective #project #management #tools #softwares

9 effective project management software for your team

Hazel Audrin

1613065095

Take these 3 Signs Seriously in Writing.

  • You don’t make an outline
  • You have made the unrealistic deadline
  • You critique and edit while writing your draft.

In any of the above-mentioned cases, you are sabotaging your creativity. These signs show that you need to refocus your energy on your content and avoid dreading writing. If these signs are not taken seriously, you are destroying your creative writing career.

You can come up with thousands of excuses for not writing, but acknowledging your laziness or unproductivity will help you overcome your problems.

Take the example of a patient who’s been sick for some time now, but there’s no cure present at the moment because his illness has not been diagnosed. Your writing problems are just the same. Until and unless you realize what the problem is, you won’t be able to solve it.
Here are some serious signs that you need to look out for to avoid falling into a never-ending pitfall.

You don’t formulate an outline:

It’s easy to get distracted while writing. At one point, we are talking about pains and problems; the next paragraph takes you to an open lake swimming experience. Did you realize what did I do? You are confused.

Well, that’s how your reader will feel when reading a text that is unstructured or illogical. Your goal is to facilitate your reader as much as you can.

For clarity and coherence in your writing, it is essential that you outline before beginning your story or write up.

As mentioned by Ghostwriting Services Rates team members. Everything will be directed and focused once you know all the key pointers are needed to be included. Your thoughts will not go astray, and you will write effectively.
Remember that when you outline the things you want to talk about, don’t use complicated and complex words.

Make your outline as simple as possible. This will assist you in gathering your ideas to become smooth and clear. Likewise, your reader doesn’t get overwhelmed, going back and forth to make sense of your writing.

You have made an unrealistic deadline:

When you make an unreasonable deadline for your project, you can never complete it on time. Take time to study the project details. Understand what you will need to solve the problem at hand. Likewise, be realistic in making the deadlines.
At the time, you can be tricked by your mind into realizing that your project is easy and it will not need much of your time. Henceforth, when your project is upon your head, you get stressed out and perform below average.

Set a workable schedule, divide your time after grasping the demand of the work nature. Sometimes, fooling or tricking yourself with naïve dates can work in your favor, and you can complete the task before the closing date.

Do it yourself:

  • Set an attainable deadline after reviewing your experience if the project is of the same nature.
  • Track your estimate of work delivery for future reference.
  • Set naïve deadlines and leave some margin for unforeseen activities.

Let your inner editor critique your every sentence in the first draft.

While writing, it is easy to see our mistakes and errors. Sometimes we judge our thoughts other times; we restrict them. However, when you let your inner editor critique your sentence constructions or word choice, you sabotage your creative side.

What can you do instead? Leave the editing part for the latter. You need to understand that there is always room for improvement, but never at the time of writing. You can always check the flow, correct the spellings, and remove all the additional words. Similarly, you can track all the grammatical errors without breaking your creative flow.

Editing while writing is dangerous for both productivity and your project. Equally, researching while you are in the writing phase is risky as well. Do the research work before writing your first draft. This way, you can save your time and ensure the effectiveness of your communicative piece.

Do it yourself:

  • Don’t try to edit while writing. Keep editing for the next phase.
  • Prepare the research work before starting to write on the topic.
  • Let your inner critic sleep for the first two drafts.
  • Correct all the red lines and spelling errors later.

#writing #words #research #effective

Take these 3 Signs Seriously in Writing.