Ordered Maps in Go

Same as regular maps, but also remembers the order in which keys were inserted, akin to Python’s collections.OrderedDicts.

It offers the following features:

  • optimal runtime performance (all operations are constant time)
  • optimal memory usage (only one copy of values, no unnecessary memory allocation)
  • allows iterating from newest or oldest keys indifferently, without memory copy, allowing to break the iteration, and in time linear to the number of keys iterated over rather than the total length of the ordered map
  • takes and returns generic interface{}s
  • idiomatic API, akin to that of container/list

Installation

go get -u github.com/wk8/go-ordered-map

Or use your favorite golang vendoring tool!

Documentation

The full documentation is available on godoc.org.

Example / usage

package main

import (
	"fmt"

	"github.com/wk8/go-ordered-map"
)

func main() {
	om := orderedmap.New()

	om.Set("foo", "bar")
	om.Set("bar", "baz")
	om.Set("coucou", "toi")

	fmt.Println(om.Get("foo"))          // => bar, true
	fmt.Println(om.Get("i dont exist")) // => <nil>, false

	// iterating pairs from oldest to newest:
	for pair := om.Oldest(); pair != nil; pair = pair.Next() {
		fmt.Printf("%s => %s\n", pair.Key, pair.Value)
	} // prints:
	// foo => bar
	// bar => baz
	// coucou => toi

	// iterating over the 2 newest pairs:
	i := 0
	for pair := om.Newest(); pair != nil; pair = pair.Prev() {
		fmt.Printf("%s => %s\n", pair.Key, pair.Value)
		i++
		if i >= 2 {
			break
		}
	} // prints:
	// coucou => toi
	// bar => baz
}

All of OrderedMap’s methods accept and return interface{}s, so you can use any type of keys that regular maps accept, as well pack/unpack arbitrary values, e.g.:

type myStruct struct {
	payload string
}

func main() {
	om := orderedmap.New()

	om.Set(12, &myStruct{"foo"})
	om.Set(1, &myStruct{"bar"})

	value, present := om.Get(12)
	if !present {
		panic("should be there!")
	}
	fmt.Println(value.(*myStruct).payload) // => foo

	for pair := om.Oldest(); pair != nil; pair = pair.Next() {
		fmt.Printf("%d => %s\n", pair.Key, pair.Value.(*myStruct).payload)
	} // prints:
	// 12 => foo
	// 1 => bar
}

Alternatives

There are several other ordered map golang implementations out there, but I believe that at the time of writing none of them offer the same functionality as this library; more specifically:

  • iancoleman/orderedmap only accepts string keys, its Delete operations are linear
  • cevaris/ordered_map uses a channel for iterations, and leaks goroutines if the iteration is interrupted before fully traversing the map
  • mantyr/iterator also uses a channel for iterations, and its Delete operations are linear
  • samdolan/go-ordered-map adds unnecessary locking (users should add their own locking instead if they need it), its Delete and Get operations are linear, iterations trigger a linear memory allocation

#go #golang #google-maps #developer

What is GEEK

Buddha Community

Ordered Maps in Go

Guangming Dong

1595573752

thanks,i will use map order

Fannie  Zemlak

Fannie Zemlak

1599854400

What's new in the go 1.15

Go announced Go 1.15 version on 11 Aug 2020. Highlighted updates and features include Substantial improvements to the Go linker, Improved allocation for small objects at high core counts, X.509 CommonName deprecation, GOPROXY supports skipping proxies that return errors, New embedded tzdata package, Several Core Library improvements and more.

As Go promise for maintaining backward compatibility. After upgrading to the latest Go 1.15 version, almost all existing Golang applications or programs continue to compile and run as older Golang version.

#go #golang #go 1.15 #go features #go improvement #go package #go new features

Origin Scale

Origin Scale

1616572311

Originscale Order Management System

Originscale order management software helps to manage all your orders across channels in a single place. Originscale collects orders across multiple channels in real-time - online, offline, D2C, B2B, and more. View all your orders in one single window and process them with a simple click.

#order management system #ordering management system #order management software #free order management software #purchase order management software #best order management software

Ordered Maps in Go

Same as regular maps, but also remembers the order in which keys were inserted, akin to Python’s collections.OrderedDicts.

It offers the following features:

  • optimal runtime performance (all operations are constant time)
  • optimal memory usage (only one copy of values, no unnecessary memory allocation)
  • allows iterating from newest or oldest keys indifferently, without memory copy, allowing to break the iteration, and in time linear to the number of keys iterated over rather than the total length of the ordered map
  • takes and returns generic interface{}s
  • idiomatic API, akin to that of container/list

Installation

go get -u github.com/wk8/go-ordered-map

Or use your favorite golang vendoring tool!

Documentation

The full documentation is available on godoc.org.

Example / usage

package main

import (
	"fmt"

	"github.com/wk8/go-ordered-map"
)

func main() {
	om := orderedmap.New()

	om.Set("foo", "bar")
	om.Set("bar", "baz")
	om.Set("coucou", "toi")

	fmt.Println(om.Get("foo"))          // => bar, true
	fmt.Println(om.Get("i dont exist")) // => <nil>, false

	// iterating pairs from oldest to newest:
	for pair := om.Oldest(); pair != nil; pair = pair.Next() {
		fmt.Printf("%s => %s\n", pair.Key, pair.Value)
	} // prints:
	// foo => bar
	// bar => baz
	// coucou => toi

	// iterating over the 2 newest pairs:
	i := 0
	for pair := om.Newest(); pair != nil; pair = pair.Prev() {
		fmt.Printf("%s => %s\n", pair.Key, pair.Value)
		i++
		if i >= 2 {
			break
		}
	} // prints:
	// coucou => toi
	// bar => baz
}

All of OrderedMap’s methods accept and return interface{}s, so you can use any type of keys that regular maps accept, as well pack/unpack arbitrary values, e.g.:

type myStruct struct {
	payload string
}

func main() {
	om := orderedmap.New()

	om.Set(12, &myStruct{"foo"})
	om.Set(1, &myStruct{"bar"})

	value, present := om.Get(12)
	if !present {
		panic("should be there!")
	}
	fmt.Println(value.(*myStruct).payload) // => foo

	for pair := om.Oldest(); pair != nil; pair = pair.Next() {
		fmt.Printf("%d => %s\n", pair.Key, pair.Value.(*myStruct).payload)
	} // prints:
	// 12 => foo
	// 1 => bar
}

Alternatives

There are several other ordered map golang implementations out there, but I believe that at the time of writing none of them offer the same functionality as this library; more specifically:

  • iancoleman/orderedmap only accepts string keys, its Delete operations are linear
  • cevaris/ordered_map uses a channel for iterations, and leaks goroutines if the iteration is interrupted before fully traversing the map
  • mantyr/iterator also uses a channel for iterations, and its Delete operations are linear
  • samdolan/go-ordered-map adds unnecessary locking (users should add their own locking instead if they need it), its Delete and Get operations are linear, iterations trigger a linear memory allocation

#go #golang #google-maps #developer

sarika Inogic

1623221809

Maplytics - Dynamics 365 CRM and Bing Maps Integration

Maplytics™ is an advanced mapping and data visualization tool for Microsoft Dynamics 365 CRM. It provides Territory Management, Appointment Planning, Routing, Radius Search and much more with support for PowerApps (CDS). Maplytics supports all Dynamics 365 deployment models for Dynamics CRM 2011 and above as well as native Dynamics 365 App for Phones and Tablets.
Below are the features you can avail with Maplytics
• Sales Territory Management: Geographically manage and align sales territories, perform binary operations on shapes, regions or territories on map. Assign multiple territories to a record.
• Auto Scheduling: Create an automated optimized schedule for multiple days on field including routes to follow each day based on details entered by user and also create activities for the same
• Check-In/Check-Out: Enable Check-In/Check-Out for field reps on site of visit with the option of Geofencing
• PCF control: User can add components on fields or grids within Dynamics CRM to view the respective records on the map within the record form or the entity grid
• Overlay: View records, shape files and existing territories together on map. View Census Data as existing Overlay feature.
• Proximity Search: Search records for a location based on radius or time with shortest travel and line of sight distance.
• Route Optimization: Optimize routes, find nearby records along the route and points of interest like Coffee Shops, Gas station, etc.
• Customizable Pushpins & Tooltip Cards: Plot desired icons for pushpins for seamless visual analysis. Call to action buttons on Tooltip cards for quick actions.
• Security template: System admin and Maplytics admin can provide selective access of actions to users
• Marketing Management: Create geographically targeted Marketing Lists for personalized and relevant promotions, marketing campaigns and events
• Mass Actions: Add to Route, Save Data, Schedule Appointments, Send Emails and more for records plotted on map
• Summary Card: Get aggregated information for enclosed area on map for quick analysis
• Layer Menu/Download Map: Show/hide layers plotted on map to toggle between them and Download the map as image visible on screen
• Mobility: Use native Dynamics 365 App for Phones and Tablets to get locational insights
• Heat Map Visualization: Analyze density of CRM data on map for insights through pie/column charts
• Real-Time Tracking: Managers can now track the location of Field Service Reps when on field in real time within Dynamics 365 Field service.
• Land Area Mapping: Define the area of land as agricultural, residential, commercial properties and visualize the same on the map.
• Territory Assignment Rule: Maplytics Admins and Managers can create simple/advanced rules based on which territories will be assigned to the records as per the required conditions.

#maps #bing #maps #map #dyynamics #65crm

What is Maps.me (MAPS) | What is Maps.me token | What is MAPS token

Maps.me 2.0 aims to be the ultimate travel companion and your passport to the new financial system. Powered by Serum and running on the fast and scalable Solana blockchain, Maps.me and its 140mm users represent a one-in-a-kind opportunity to accelerate the worldwide adoption of DeFi. MAPS tokens will bind Maps.me’s users and provide familiar travel reward programs and discounts, as well as governance features on certain aspects of ecosystem.

About MAPS

Maps.me 2.0 has both online and offline maps while offering DeFi functionalities to its 100M+ users.

Powering Maps.me 2.0 is the MAPS token which may provide token holders with 100% of the platform’s net revenues.

Token-holders using the app will also benefit from personalized promotions and rewards, likely driving adoption, retention, and virality of MAPS within the community. There are very few apps with a user base as large as ours, so Maps.me is positioned to quickly put DeFi financial services in the hands of many.

Furthermore, users utilize our app throughout their entire journey/travel process: we can therefore develop a travel- and wallet-oriented ecosystem to instill new user habits with regards to,

  • Payments
  • Accommodation booking
  • Fund transfers
  • Asset management

Our offered financial services are decentralized, which contrasts with the centralized nature of Robinhood (brokerage), Paypal (payments), and Revolut (fintech banking).

Maps.me is a popular mapping application that works similar to Google Maps except users can access it offline. But why is it relevant to crypto? Maps 2.0 introduces new financial products and services on the platform, allowing users to store assets, convert currencies, transfer funds, and make payments digitally.

Decentralized finance (DeFi) has enabled a new wave of innovations on the blockchain. It has helped expand the use cases for digital assets since it allows integration with any platform. And Maps is one of the biggest applications today that have transitioned to adopt DeFi technology.

Maps is a travel and navigation application that allows users to access maps both online and offline. Lately, Maps has introduced new digital finance features built on the  Solana blockchain. With a remarkable user base actively using the platform, it can become a springboard for greater DeFi adoption.

Background

Maps.me is an application owned by the Mail.ru group, a leading internet business firm based in Russia, which is also backed by other prominent firms like Alibaba, Naspers, and Tencent. With the aim of maximizing the application and tapping on its growing user base, the team behind the project worked on introducing DeFi features on the platform.

Maps has also been working closely with Alameda Research and FTX Exchange’s Sam Bankman-Fried, who also happens to be one of the advisors for  Oxygen protocol, a Solana-based exchange. In order to help bring liquidity to Oxygen, Maps is hoping to make them work together to be able to tap Map’s rich user base.

What is Maps.me?

Maps.me is a mapping application that users can access offline. It functions almost similarly with Google Maps, only that Maps.me can work without internet access. Across the world, the platform has recorded over 140 million users utilizing it for their travel needs, as well as an aid for directions.

Maps 2.0 introduces new financial products and services on the platform. Through this upgrade, users can finally store assets, perform currency exchange, transfer money, and make payments digitally. One of its biggest additions includes the integration of DeFi on Maps 2.0.

Maps’s digital wallet can facilitate peer-to-peer transactions. This means that it does not need any intermediary to conduct the exchange between users worldwide, making it a more affordable and censorship-resistant platform for remittances and cross-border payments.

Maps 2.0

If you are a business owner, you also will not need to list your property on third-party websites or applications, which can be expensive for the owners, as well as the consumers. With Maps as the all-in-one platform, users can finally make direct bookings and payments without leaving the application. In addition, businesses can benefit from doing away with intermediaries and the extra costs that come with them.

Besides the DeFi services that will be made available to the updated Maps platform, the project will also be partnering with local businesses to promote both their needs as well as their users. This ecosystem is expected to create a richer use case with personalized promotions, loyalty programs, branded content integrated within the map, and the opportunity to claim a business and increase its visibility with utmost convenience.

The economic model of Maps 2.0 will be built on top of the Solana blockchain and powered by the Serum protocol. This enables network attributes like faster transaction settlement times, low transaction fees, network security, and composability. Furthermore, the platform will also introduce a native token called MAPS, which would enable the platform to reward its users and holders for their app usage. In addition, the holders of the token will be given 100% of the net revenue that the platform makes.

Along with the token, Maps 2.0 will integrate a digital wallet, which can be used to store the users’ cryptocurrencies or other supported assets, conduct money transfers worldwide, and trade between the platform’s supported assets.

Developers of the platform will benefit from Maps 2.0’s deployment on the Solana blockchain as one of its biggest attributes is ‘composability.’ Anyone can build on the applications that are already on the platform. Devs can also make improvements from Maps 2.0, as well as create new protocols that complement those that already exist.

MAPS Token

As already mentioned, MAPS token enables a reward system designed to benefit its holders and app users. They can earn from privacy-preserving, personalized promotions too, helping the application cultivate its user base long-term. This token can also be used as a medium of exchange on the platform.

To ensure the sustainability of the platform’s growth, it follows a deflationary token model. There are only 10,000,000,000 MAPS tokens in existence, and no more will be minted in the future. Its total supply will also continuously decrease over time as the tokens that are bought back are burned.

Anyone can purchase MAPS tokens, except those who live in the United States, China, or other countries where it is prohibited.

How Does the Platform Generate Revenue?

MAPS holders will be able to earn their share of the revenue from services provided by the platform. These include revenue out of trading fees, fees from credit card transactions, fees from currency conversions, advertising fees, referral commissions, and many other products.

Other Benefits to Holding MAPS?

First off, frequent users of the application and those who promote listed locations on the platform earn MAPS tokens as a reward. Holders also enjoy lower fees and higher rewards from products and services available on the platform.

Another benefit of holding the native token is the opportunity to take part in the governance mechanism for the platform. This voting function allows users to take control of the application, especially on matters concerning upgrades, amendments to the reward structure and adding or modifying products and services, among others.

Business owners who also hold MAPS earn benefits from it as well. For one, holding the token will help them achieve better visibility as their locations are highlighted to users of the platform. This also means that they can be categorized into ‘premium listings,’ which gives them a good position in user searches.

Sam Bankman-Fried and Maps 2.0

With Maps’s collaboration with Sam Bankman-Fried, the pioneer of the Serum Project, FTX Exchange and the founder of Alameda Research, as one of their consultants, users can expect a platform developed to fit what anyone would need in a DeFi platform.

Maps has also been reportedly working on linking the application to the Oxygen protocol for their brokerage and exchange needs. As one of the newly developed exchanges in the DeFi space, Oxygen can substantially benefit from this partnership as they will be able to access a body of users that Maps has amassed.

Total Supply: 10,000,000,000 MAPS

Initial circulating supply: Up to 300,000,000 MAPS

Token Distribution

Private sale: 5%
Public Sale and initial liquidity: 5%
Serum community fund: 20%
MAPS community fund: 20%
Liquidity & token growth: 5%
Ecosystem partners: 10%
Project builders: 15%
Technology & product: 10%
Ecosystem growth & marketing: 10%

Token Vesting Schedule

Public Sale and initial liquidity: Unlocked 
Locked tokens are fully locked for the first year from token genesis, and then unlock linearly over the six years following.

How and Where to Buy Maps.me (MAPS)?

MAPS is now live on the Ethereum mainnet. The token address for MAPS is 0x2b915b505c017abb1547aa5ab355fbe69865cc6d. Be cautious not to purchase any other token with a smart contract different from this one (as this can be easily faked). We strongly advise to be vigilant and stay safe throughout the launch. Don’t let the excitement get the best of you.

Just be sure you have enough ETH in your wallet to cover the transaction fees.

You will have to first buy one of the major cryptocurrencies, usually either Bitcoin (BTC), Ethereum (ETH), Tether (USDT), Binance (BNB)…

We will use Binance Exchange here as it is one of the largest crypto exchanges that accept fiat deposits.

Once you finished the KYC process. You will be asked to add a payment method. Here you can either choose to provide a credit/debit card or use a bank transfer, and buy one of the major cryptocurrencies, usually either Bitcoin (BTC), Ethereum (ETH), Tether (USDT), Binance (BNB)…

SIGN UP ON BINANCE

Step by Step Guide : What is Binance | How to Create an account on Binance (Updated 2021)

Next step

You need a wallet address to Connect to Uniswap Decentralized Exchange, we use Metamask wallet

If you don’t have a Metamask wallet, read this article and follow the steps
What is Metamask wallet | How to Create a wallet and Use

Next step

Connect Metamask wallet to Uniswap Decentralized Exchange and Buy MAPS token

Contract: 0x2b915b505c017abb1547aa5ab355fbe69865cc6d

The top exchange for trading in MAPS token is currently FTX, Bithumb, CoinBene, Gate.io, and Uniswap (V2)

Apart from the exchange(s) above, there are a few popular crypto exchanges where they have decent daily trading volumes and a huge user base. This will ensure you will be able to sell your coins at any time and the fees will usually be lower. It is suggested that you also register on these exchanges since once MAPS gets listed there it will attract a large amount of trading volumes from the users there, that means you will be having some great trading opportunities!

Top exchanges for token-coin trading. Follow instructions and make unlimited money

https://www.binance.com
https://www.bittrex.com
https://www.poloniex.com
https://www.bitfinex.com
https://www.huobi.com
https://www.mxc.ai
https://www.probit.com
https://www.gate.io
https://www.coinbase.com

Find more information MAPS

WebsiteExplorerExplorer 2Social ChannelMessage BoardCoinmarketcap

🔺DISCLAIMER: The Information in the post is my OPINION and not financial advice, is intended FOR GENERAL INFORMATION PURPOSES ONLY. Trading Cryptocurrency is VERY risky. Make sure you understand these risks and that you are responsible for what you do with your money.

🔥 If you’re a beginner. I believe the article below will be useful to you

⭐ ⭐ ⭐ What You Should Know Before Investing in Cryptocurrency - For Beginner ⭐ ⭐ ⭐

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#blockchain #bitcoin #maps.me #maps