The Importance of Scalability in Web Development

Scalability is a key factor to consider when developing a web application. It is important for business applications to be able to handle high volumes of traffic and data, while also being able to adapt to changes in demand as needed.

Full stack development involves the use of several technologies and tools that work together to create robust, scalable web applications. Using these technologies and tools can help developers build web applications that meet current needs and are ready for future growth.

1. Scalability is Key

Full-stack developers have a thorough understanding of everything from the front end (UI and design) to the back end (the server). They work on a project from start to finish and are able to complete it much faster than someone who only works on one area.

Businesses that prioritize full stack development are able to keep pace with the rapidly changing technology landscape, which will help them stay competitive in their industry. It also allows them to adapt and evolve their business solutions in line with changing needs and goals.

Scalability is the ability of a software system to accommodate an increase in workload without causing any performance issues or problems. It can be achieved either by horizontally scaling or vertically, depending on the specific application.

2. Scalability Is a Priority

Scalability is important for growing businesses, which need to be able to handle large amounts of data and traffic without requiring massive changes. It also makes it easier for them to add new features and functionality as needed.

Full stack development allows businesses to build applications that are scalable, robust and flexible. This enables them to meet the needs of their customers and provide an excellent user experience across all devices and platforms.

They can also save a lot of money and time as they only have to hire one team instead of two teams. This allows them to keep costs low while still providing high-quality results.

Full stack developers know the ins and outs of all aspects of software development, from front end to backend and server management. This allows them to solve many different problems and make sure that they deliver projects on time.

3. Scalability Is a Requirement

A business or software system with high scalability is capable of adjusting to increasing demand and changing needs easily. This helps the business increase revenue while decreasing costs.

Scalability is a key factor to consider when hiring a full stack developer. It allows you to have one team that can take on multiple tasks, saving you time and money while still producing quality results.

In addition, it also enables you to build an application that is more user-friendly and meets your business goals. This can help you attract more customers and make your product more marketable.

Full stack developers should have strong skills in both front end and back end development. This includes knowledge of how the user interface and data interact on a website or app, as well as how to operate network equipment and virtual machines. They should also have a thorough understanding of web architecture and how it impacts the overall performance of the site or app.

4. Scalability Is a Benefit

Full stack developers have a broad knowledge of technology and the creative aspects that go into the process of creating an application. This gives them the ability to step in anywhere across the development spectrum that goes into building a successful product.

This versatility enables them to troubleshoot areas that may be causing problems in the development of the product. This helps to reduce mistakes and saves time and money.

It also enables them to switch between front-end and back-end development in order to solve a problem or change something that is needed on the client’s end. This is a huge benefit for clients and IT firms alike, as it reduces both the time and costs associated with developing an application.

Scalability is another major reason why businesses prefer to use full stack developers for their projects. This is because it enables them to add a small team to their project and avoid hiring a lot of specialists for every aspect of the development process. This way, they can save a lot of money and still produce quality work.

 

What is GEEK

Buddha Community

LLDebugtool: A Debugging Tool for Developers & Testers

LLDebugtool

A debugging tool for developers and testers that can help you analyze and manipulate data in non-xcode situations.

Introduction

LLDebugTool is a debugging tool for developers and testers that can help you analyze and manipulate data in non-xcode situations.

LLDebugToolSwift is the extension of LLDebugTool, it provide swift interface for LLDebugTool, LLDebugToolSwift will release with LLDebugTool at same time.

If your project is a Objective-C project, you can use LLDebugTool, if your project is a Swift project or contains swift files, you can use LLDebugToolSwift.

Choose LLDebugTool for your next project, or migrate over your existing projects—you'll be happy you did! 🎊🎊🎊

Gif

Preview

What's new in 1.3.8.1

Remove auto check version.

• Too many visits to the website cocoadocs.org cause cocoadocs.org to disable the access to LLDebugTool, so this function is removed.

What can you do with LLDebugTool?

Always check the network request or view log information for certain events without having to run under XCode. This is useful in solving the testers' problems.

Easier filtering and filtering of useful information.

Easier analysis of occasional problems.

Easier analysis of the cause of the crash.

Easier sharing, previewing, or removing sandbox files, which can be very useful in the development stage.

Easier observe app's memory, CPU, FPS and other information.

Take screenshots, tag and share.

More intuitive view of view structure and dynamic modify properties.

Determine UI elements and colors in your App more accurately.

Easy access to and comparison of point information.

Easy access to element borders and frames.

Quick entry for html.

Mock location at anytime.

Adding LLDebugTool to your project

CocoaPods

CocoaPods is the recommended way to add LLDebugTool to your project.

Objective - C

1. Add a pod entry for LLDebugTool to your Podfile pod 'LLDebugTool' , '~> 1.0'.
2. If only you want to use it only in Debug mode, Add a pod entry for LLDebugTool to your Podfile pod 'LLDebugTool' , '~> 1.0' ,:configurations => ['Debug'], Details also see Wiki/Use in Debug environment. If you want to specify the version, use as pod 'LLDebugTool' , '1.3.8.1' ,:configurations => ['Debug'].
3. The recommended approach is to use multiple targets and only add pod 'LLDebugTool', '~> 1.0' to Debug Target. This has the advantage of not contamiling the code in the Product environment and can be integrated into the App in the Archive Debug environment (if :configurations => ['Debug'], it can only run through XCode. It is not possible to Archive as an App).
4. Install the pod(s) by running pod install. If you can't search LLDebugTool or you can't find the newest release version, running pod repo update before pod install.
5. Include LLDebugTool wherever you need it with #import "LLDebug.h" or you can write #import "LLDebug.h" in your .pch in your .pch file.

Swift

1. Add a pod entry for LLDebugToolSwift to your Podfile pod 'LLDebugToolSwift' , '~> 1.0'.
2. If only you want to use it only in Debug mode, Add a pod entry for LLDebugToolSwift to your Podfile pod 'LLDebugToolSwift' , '~> 1.0' ,:configurations => ['Debug'], Details also see Wiki/Use in Debug environment. If you want to specify the version, use as pod 'LLDebugToolSwift' , '1.3.8.1' ,:configurations => ['Debug'].
3. The recommended approach is to use multiple targets and only add pod 'LLDebugToolSwift', '~> 1.0' to Debug Target. This has the advantage of not contamiling the code in the Product environment and can be integrated into the App in the Archive Debug environment (if :configurations => ['Debug'], it can only run through XCode. It is not possible to Archive as an App).
4. Must be added in the Podfile use_frameworks!.
5. Install the pod(s) by running pod install. If you can't search LLDebugToolSwift or you can't find the newest release version, running pod repo update before pod install.
6. Include LLDebugTool wherever you need it with import "LLDebugToolSwift.

Carthage

Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.

Objective - C

To integrate LLDebugTool into your Xcode project using Carthage, specify it in your Cartfile:

github "LLDebugTool"

Run carthage to build the framework and drag the built LLDebugTool.framework into your Xcode project.

Swift

To integrate LLDebugToolSwift into your Xcode project using Carthage, specify it in your Cartfile:

github "LLDebugToolSwift"

Run carthage to build the framework and drag the built LLDebugToolSwift.framework into your Xcode project.

Source files

Alternatively you can directly add the source folder named LLDebugTool. to your project.

Objective - C

1. Download the latest code version or add the repository as a git submodule to your git-tracked project.
2. Open your project in Xcode, then drag and drop the source folder named LLDebugTool. When you are prompted to "Choose options for adding these files", be sure to check the "Copy items if needed".
3. Integrated FMDB to your project,FMDB is an Objective-C wrapper around SQLite.
4. Integrated Masonry to your project, Masonry is an Objective-C constraint library. There are no specific version requirements, but it is recommended that you use the latest version.
5. Include LLDebugTool wherever you need it with #import "LLDebug.h" or you can write #import "LLDebug.h" in your .pch in your .pch file.

Swift

1. Download the LLDebugTool latest code version or add the repository as a git submodule to your git-tracked project.
2. Download the LLDebugToolSwift latest code version or add the repository as a git submodule to your git-tracked project.
3. Open your project in Xcode, then drag and drop the source folder named LLDebugTool and LLDebugToolSwift. When you are prompted to "Choose options for adding these files", be sure to check the "Copy items if needed".
4. Integrated FMDB to your project,FMDB is an Objective-C wrapper around SQLite.
5. Integrated Masonry to your project, Masonry is an Objective-C constraint library. There are no specific version requirements, but it is recommended that you use the latest version.
6. Include LLDebugTool wherever you need it with import LLDebugToolSwift".

Usage

Get Started

You need to start LLDebugTool at "application:(UIApplication * )application didFinishLaunchingWithOptions:(NSDictionary * )launchOptions", Otherwise you will lose some information.

If you want to configure some parameters, must configure before "startWorking". More config details see LLConfig.h.

• Quick Start

In Objective-C

#import "AppDelegate.h"
#import "LLDebug.h"

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // The default color configuration is green background and white text color. 

    // Start working.
    [[LLDebugTool sharedTool] startWorking];
    
    // Write your project code here.
    return YES;
}

In Swift

import LLDebugToolSwift

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // ####################### Start LLDebugTool #######################//
        // Use this line to start working.
        LLDebugTool.shared().startWorking()
        
        // Write your project code here.
        
        return true
    }

• Start With Custom Config

In Objective-C

#import "AppDelegate.h"
#import "LLDebug.h"

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // Start working with config.
    [[LLDebugTool sharedTool] startWorkingWithConfigBlock:^(LLConfig * _Nonnull config) {

        //####################### Color Style #######################//
        // Uncomment one of the following lines to change the color configuration.
        // config.colorStyle = LLConfigColorStyleSystem;
        // [config configBackgroundColor:[UIColor orangeColor] primaryColor:[UIColor whiteColor] statusBarStyle:UIStatusBarStyleDefault];

        //####################### User Identity #######################//
        // Use this line to tag user. More config please see "LLConfig.h".
        config.userIdentity = @"Miss L";

        //####################### Window Style #######################//
        // Uncomment one of the following lines to change the window style.
        // config.entryWindowStyle = LLConfigEntryWindowStyleNetBar;

    }];

    return YES;
}

In Swift

import LLDebugToolSwift

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        
        // Start working with config.
        LLDebugTool.shared().startWorking { (config) in
            //####################### Color Style #######################//
            // Uncomment one of the following lines to change the color configuration.
            // config.colorStyle = .system
            // config.configBackgroundColor(.orange, textColor: .white, statusBarStyle: .default)
        
            //####################### User Identity #######################//
            // Use this line to tag user. More config please see "LLConfig.h".
            config.userIdentity = "Miss L";
        
            //####################### Window Style #######################//
            // Uncomment one of the following lines to change the window style.
            // config.windowStyle = .netBar
        
            //####################### Features #######################//
            // Uncomment this line to change the available features.
            // config.availables = .noneAppInfo
        }
        
        return true
    }

Network Request

You don't need to do anything, just call the "startWorking" will monitoring most of network requests, including the use of NSURLSession, NSURLConnection and AFNetworking. If you find that you can't be monitored in some cases, please open an issue and tell me.

Log

Print and save a log. More log macros details see LLDebugToolMacros.h.

• Save Log

In Objective-C

#import "LLDebug.h"

- (void)testNormalLog {
    // Insert an LLog where you want to print.
    LLog(@"Message you want to save or print.");
}

In Swift

import LLDebugToolSwift

    func testNormalLog() {
        // Insert an LLog where you want to print.
        LLog.log(message: "Message you want to save or print.")
    }

• Save Log with event and level

In Objective-C

#import "LLDebug.h"

- (void)testEventErrorLog {
    // Insert an LLog_Error_Event where you want to print an event and level log.
    LLog_Error_Event(@"The event that you want to mark. such as bugA, taskB or processC.",@"Message you want to save or print.");
}

In Swift

import LLDebugToolSwift

    func testEventErrorLog() {
        // Insert an LLog_Error_Event where you want to print an event and level log.
        LLog.errorLog(message: "Message you want to save or print.", event: "The event that you want to mark. such as bugA, taskB or processC.")
    }

Crash

You don't need to do anything, just call the "startWorking" to intercept the crash, store crash information, cause and stack informations, and also store the network requests and log informations at the this time.

AppInfo

LLDebugTool monitors the app's CPU, memory, and FPS. At the same time, you can also quickly check the various information of the app.

Sandbox

LLDebugTool provides a quick way to view and manipulate sandbox, you can easily delete the files/folders inside the sandbox, or you can share files/folders by airdrop elsewhere. As long as apple supports this file format, you can preview the files directly in LLDebugTool.

Screenshots

LLDebugTool provides a screenshot and allows for simple painting and marking that can be easily recorded during testing or while the UI designers debugs the App.

Hierarchy

LLDebugTool provides a view structure tool for viewing or modify elements' properties and information in non-debug mode.

Magnifier

LLDebugTool provides a magnify tool for magnifying local uis and viewing color values at specified pixel.

Ruler

LLDebugTool provides a convenient tools to display touch point information.

Widget Border

LLDebugTool provides a function to display element border, convenient to see the view's frame.

HTML

LLDebugTool can debug HTML pages through WKWebView, UIWebView or your customized ViewController in your app at any time.

Location

LLDebugTool provides a function to mock location at anytime.

More Usage

• You can get more help by looking at the Wiki.
• You can download and run the LLDebugToolDemo or LLDebugToolSwiftDemo to find more use with LLDebugTool. The demo is build under MacOS 10.15.1, XCode 11.2.1, iOS 13.2.2, CocoaPods 1.8.4. If there is any version compatibility problem, please let me know.

Requirements

LLDebugTool works on iOS 8+ and requires ARC to build. It depends on the following Apple frameworks, which should already be included with most Xcode templates:

UIKit

Foundation

SystemConfiguration

Photos

QuickLook

CoreTelephony

CoreLocation

MapKit

AVKit

Architecture

LLDebug.h

Public header file. You can refer it to the pch file.

DebugTool

LLDebugTool Used to start and stop LLDebugTool, you need to look at it.

LLConfig Used for the custom color , size , identification and other information. If you want to configure anything, you need to focus on this file.

LLDebugToolMacros.h Quick macro definition file.

Components

• Network Used to monitoring network request.
• Log Used to quick print and save log.
• Crash Used to collect crash information when an App crashes.
• AppInfo Use to monitoring app's properties.
• Sandbox Used to view and operate sandbox files.
• Screenshot Used to process and display screenshots.
• Hierarchy Used to process and present the view structure.
• Magnifier Used for magnifying glass function.
• Ruler Used to ruler function.
• Widget Border User to widget border function.
• Function Used to show functions.
• Html Used to dynamic test web view.
• Location Used to mock location.
• Setting Used to dynamically set configs.

Communication

• If you need help, open an issue.
• If you'd like to ask a general question, open an issue.
• If you found a bug, and can provide steps to reliably reproduce it, open an issue.
• If you have a feature request, open an issue.
• If you find anything wrong or anything dislike, open an issue.
• If you have some good ideas or some requests, send mail(llworkinggroup1992@gmail.com) to me.
• If you want to contribute, submit a pull request.

Contact

• Send email to llworkinggroup1992@gmail.com
• Send message in twitter @HdbLi
• Send message in JianShu

Change-log

A brief summary of each LLDebugTool release can be found in the CHANGELOG.

点击查看中文简介

Download Details:

Author: HDB-Li
Source Code: https://github.com/HDB-Li/LLDebugTool 
License: View license

#swift #ios #cpu #monitoring #objective-c #xcode 

如何将函数从 C++ 导出到 React Native

今天，我继续分享我在 Native Module 和 C++ 方面的经验。

由于我们将看到很多为移动平台编写的 C/C++ 库，因此我们需要将它们实现到我们的 iOS 或 React Native 应用程序中。这就是为什么我想写一篇关于如何将一个函数从 C++ 导出到 React Native 的文章，它易于理解并且为初学者节省了时间。我将从一个新的 react native 应用程序开始

1.新建一个react native app，打开你的终端运行

npx react-native init NativeModules

2. 打开 Xcode 并导航到 NativeModules/ios/NativeModule.xcworkspace

3. 在 C++ 端工作

创建一个新的 C++ 文件并命名Cpp_to_RN.cpp

当我们创建一个新的 C++ 文件时，Xcode 会Cpp_to_RN.hpp 为我们创建一个头文件

首先，打开“ Cpp_to_RN.hpp”文件，并创建一个包含没有主体的函数的类。

#ifndef Cpp_to_RN_hpp
#define Cpp_to_RN_hpp#include <stdio.h>
#include <string>class Cpp_to_RN {
public:
    std::string sayHello();
};#endif /* Cpp_to_RN_hpp */

然后打开Cpp_to_RN.cpp文件，写一个简单的函数“ sayHello()”

#include "Cpp_to_RN.hpp"
std::string Cpp_to_RN::sayHello(){
    return "Hello from CPP";
}

4. 处理包装 C++ 文件。

包装 C++ 文件并将它们导出到 IOS (swift) 端

一个。创建一个Objective C文件并命名Cpp_to_RN.m

重命名Cpp_to_RN.m 为 Cpp_to_RN.mm

湾。打开WrapCpp_to_RN.mm 文件并编写将包装sayHelloC++ 文件中的函数的正文内容。

#import <Foundation/Foundation.h>
#import "WrapCpp_to_RN.h"
#import "Cpp_to_RN.hpp"@implementation WrapCpp_to_RN- (NSString *) sayHello {
  Cpp_to_RN fromCPP;
    std::string helloWorldMessage = fromCPP.sayHello();
    return [NSString
            stringWithCString:helloWorldMessage.c_str()
            encoding:NSUTF8StringEncoding];
}
@end

C。创建头文件并命名WrapCpp_to_RN.h

将函数导出wrapSayHello到 Swift 文件

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

5. 在 iOS (Swift) 端工作

将 C++ 函数导出到 React Native

一个。创建一个 Swift 文件并命名SendCpp_to_RN.swift

注意：Xcode 会要求我们为我们创建一个NativeModules-Bridging-Header.h文件。

创建一个类SendCpp_to_RN并将其声明为NSObject

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

编写一个函数requiresMainQueueSetup()来防止我们运行应用程序时出现警告

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

编写一个函数来包装WrapCpp_to_RN()fromWrapCpp_to_RN.mm

import Foundation@objc(SendCpp_to_RN)
class SendCpp_to_RN : NSObject {
    
  @objc static func requiresMainQueueSetup() -> Bool {
        return false
    }
  
  @objc func fromCpp(_ successCallback: RCTResponseSenderBlock) -> Void {
    successCallback([NSNull(), WrapCpp_to_RN().wrapSayHello() as Any])
    }}

湾。将 Swift 文件中的包装函数导出到 React Native

创建一个 Objective C 文件以导出 Swift 类及其函数，使用Callback

#import <React/RCTBridgeModule.h>
#import <Foundation/Foundation.h>
#import "UIKit/UIKit.h"
@interface RCT_EXTERN_MODULE(SendCpp_to_RN, NSObject)RCT_EXTERN_METHOD(fromCpp:(RCTResponseSenderBlock)successCallback)@end

C。将 Swift 连接到 React Native，打开NativeModules-Bridging-Header.h 文件

#import <React/RCTBridgeModule.h>#import <React/RCTViewManager.h>#import "WrapCpp_to_RN.h"

6. 在 React Native 方面工作

调用 Swift 类及其函数

import React from 'react';
import {StyleSheet, Text, View, NativeModules, Button} from 'react-native';const App = () => {
  const onPress = () => {
    const {SendCpp_to_RN} = NativeModules;
    SendCpp_to_RN.fromCpp((_err, res) => console.log(res));
  };
  return (
    <View style={styles.container}>
      <Text> Practice !</Text>
      <Button title="C++ to React Native" color="#841584" onPress={onPress} />
    </View>
  );
};
const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
});
export default App;

我们完成了，只需运行应用程序

react-native run-ios

或者只需单击 Xcode 上的“运行”按钮，看看我们做了什么。

希望我的文章对您有所帮助，感谢您的阅读时间。

 来源：https ://betterprogramming.pub/native-modules-export-c-function-to-react-native-for-beginners-77e89934b210

#cpp #cplusplus #react 

Cómo Exportar Una Función De C++ A React Native

Hoy sigo compartiendo mi experiencia con el Módulo Nativo y C++.

Dado que veremos muchas bibliotecas C/C++ escribiendo para las plataformas móviles, debemos implementarlas en nuestra aplicación iOS o React Native. Por eso quiero escribir un artículo sobre cómo exportar una función de C++ a React Native, que es fácil de entender y ahorra tiempo a los principiantes. Comenzaré con una nueva aplicación nativa de reacción.

1. Cree una nueva aplicación nativa de reacción, abra su terminal y ejecute

npx react-native init NativeModules

2. Abra Xcode y vaya a NativeModules/ios/NativeModule.xcworkspace

3. Trabajando en el lado de C++

Cree un nuevo archivo C++ y asígnele un nombreCpp_to_RN.cpp

Cuando creamos un nuevo archivo C++, Xcode creará un archivo de encabezado Cpp_to_RN.hpp para nosotros

Primero, abra el archivo " Cpp_to_RN.hpp" y cree una clase que incluya una función sin el cuerpo.

#ifndef Cpp_to_RN_hpp
#define Cpp_to_RN_hpp#include <stdio.h>
#include <string>class Cpp_to_RN {
public:
    std::string sayHello();
};#endif /* Cpp_to_RN_hpp */

Luego abre el Cpp_to_RN.cpparchivo y escribe una función simple “ sayHello()”

#include "Cpp_to_RN.hpp"
std::string Cpp_to_RN::sayHello(){
    return "Hello from CPP";
}

4. Trabajando en el archivo Wrapping C++.

Para envolver los archivos C++ y exportarlos al lado IOS (swift)

una. Cree un archivo Objective C y asígnele un nombreCpp_to_RN.m

Renombrar el Cpp_to_RN.m a Cpp_to_RN.mm

b. Abra el WrapCpp_to_RN.mm archivo y escriba el contenido del cuerpo que envolverá la función sayHellodel archivo C++.

#import <Foundation/Foundation.h>
#import "WrapCpp_to_RN.h"
#import "Cpp_to_RN.hpp"@implementation WrapCpp_to_RN- (NSString *) sayHello {
  Cpp_to_RN fromCPP;
    std::string helloWorldMessage = fromCPP.sayHello();
    return [NSString
            stringWithCString:helloWorldMessage.c_str()
            encoding:NSUTF8StringEncoding];
}
@end

C. Cree un archivo de encabezado y asígnele un nombreWrapCpp_to_RN.h

Exportar la wrapSayHellofunción al archivo Swift

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

5. Trabajando en el lado de iOS (Swift)

Para exportar la función C++ a React Native

una. Cree un archivo Swift y asígnele un nombreSendCpp_to_RN.swift

Nota: Xcode nos pedirá que creemos un NativeModules-Bridging-Header.harchivo para nosotros.

Crear una clase SendCpp_to_RNy declararla comoNSObject

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

Escribir una función requiresMainQueueSetup()para evitar advertencias cuando ejecutamos la aplicación.

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

Escriba una función para envolver el WrapCpp_to_RN()fromWrapCpp_to_RN.mm

import Foundation@objc(SendCpp_to_RN)
class SendCpp_to_RN : NSObject {
    
  @objc static func requiresMainQueueSetup() -> Bool {
        return false
    }
  
  @objc func fromCpp(_ successCallback: RCTResponseSenderBlock) -> Void {
    successCallback([NSNull(), WrapCpp_to_RN().wrapSayHello() as Any])
    }}

b. Exporte una función de ajuste en un archivo Swift a React Native

Cree un archivo Objective C para exportar la clase Swift y su función usandoCallback

#import <React/RCTBridgeModule.h>
#import <Foundation/Foundation.h>
#import "UIKit/UIKit.h"
@interface RCT_EXTERN_MODULE(SendCpp_to_RN, NSObject)RCT_EXTERN_METHOD(fromCpp:(RCTResponseSenderBlock)successCallback)@end

C. Conecte Swift a React Native, abra el NativeModules-Bridging-Header.h archivo

#import <React/RCTBridgeModule.h>#import <React/RCTViewManager.h>#import "WrapCpp_to_RN.h"

6. Trabajando en el lado de React Native

Llame a la clase Swift y sus funciones

import React from 'react';
import {StyleSheet, Text, View, NativeModules, Button} from 'react-native';const App = () => {
  const onPress = () => {
    const {SendCpp_to_RN} = NativeModules;
    SendCpp_to_RN.fromCpp((_err, res) => console.log(res));
  };
  return (
    <View style={styles.container}>
      <Text> Practice !</Text>
      <Button title="C++ to React Native" color="#841584" onPress={onPress} />
    </View>
  );
};
const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
});
export default App;

Y listo, solo ejecuta la aplicación

react-native run-ios

O simplemente haga clic en el botón "ejecutar" en Xcode y vea lo que hemos hecho.

Espero que mi artículo te sea útil, gracias por tu tiempo de lectura.

 Fuente: https://betterprogramming.pub/native-modules-export-c-function-to-react-native-for-beginners-77e89934b210

#cpp #cplusplus #react 

Como Exportar Uma Função De C++ Para React Native

Hoje, continuo compartilhando minha experiência com o Módulo Nativo e C++.

Como veremos muitas bibliotecas C/C++ escrevendo para plataformas móveis, precisamos implementá-las em nosso aplicativo iOS ou React Native. É por isso que quero escrever um artigo sobre como exportar uma função de C++ para React Native, que é fácil de entender e economiza tempo para iniciantes. Vou começar com um novo aplicativo nativo de reação

1. Crie um novo aplicativo nativo de reação, abra seu terminal e execute

npx react-native init NativeModules

2. Abra o Xcode e navegue até NativeModules/ios/NativeModule.xcworkspace

3. Trabalhando no lado C++

Crie um novo arquivo C++ e nomeie-oCpp_to_RN.cpp

Quando criamos um novo arquivo C++, o Xcode criará um arquivo de cabeçalho Cpp_to_RN.hpp para nós

Primeiro, abra o arquivo “ Cpp_to_RN.hpp” e crie uma classe que inclua uma função sem o corpo.

#ifndef Cpp_to_RN_hpp
#define Cpp_to_RN_hpp#include <stdio.h>
#include <string>class Cpp_to_RN {
public:
    std::string sayHello();
};#endif /* Cpp_to_RN_hpp */

Em seguida, abra o Cpp_to_RN.cpparquivo e escreva uma função simples “ sayHello()”

#include "Cpp_to_RN.hpp"
std::string Cpp_to_RN::sayHello(){
    return "Hello from CPP";
}

4. Trabalhando no arquivo C++ de encapsulamento.

Para encapsular os arquivos C++ e exportá-los para o lado IOS (swift)

uma. Crie um arquivo Objective C e nomeie-oCpp_to_RN.m

Renomeie o Cpp_to_RN.m para Cpp_to_RN.mm

b. Abra o WrapCpp_to_RN.mm arquivo e escreva o conteúdo do corpo que envolverá a função sayHellodo arquivo C++.

#import <Foundation/Foundation.h>
#import "WrapCpp_to_RN.h"
#import "Cpp_to_RN.hpp"@implementation WrapCpp_to_RN- (NSString *) sayHello {
  Cpp_to_RN fromCPP;
    std::string helloWorldMessage = fromCPP.sayHello();
    return [NSString
            stringWithCString:helloWorldMessage.c_str()
            encoding:NSUTF8StringEncoding];
}
@end

c. Crie um arquivo de cabeçalho e nomeie-oWrapCpp_to_RN.h

Exporte a wrapSayHellofunção para o arquivo Swift

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

5. Trabalhando no lado iOS (Swift)

Para exportar a função C++ para React Native

uma. Crie um arquivo Swift e nomeie-oSendCpp_to_RN.swift

Observação: o Xcode nos pedirá para criar um NativeModules-Bridging-Header.harquivo para nós.

Crie uma classe SendCpp_to_RNe declare-a comoNSObject

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

Escreva uma função requiresMainQueueSetup()para evitar avisos quando executamos o aplicativo

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

Escreva uma função para envolver o WrapCpp_to_RN()fromWrapCpp_to_RN.mm

import Foundation@objc(SendCpp_to_RN)
class SendCpp_to_RN : NSObject {
    
  @objc static func requiresMainQueueSetup() -> Bool {
        return false
    }
  
  @objc func fromCpp(_ successCallback: RCTResponseSenderBlock) -> Void {
    successCallback([NSNull(), WrapCpp_to_RN().wrapSayHello() as Any])
    }}

b. Exporte uma função wrap no arquivo Swift para React Native

Crie um arquivo Objective C para exportar a classe Swift e sua função usandoCallback

#import <React/RCTBridgeModule.h>
#import <Foundation/Foundation.h>
#import "UIKit/UIKit.h"
@interface RCT_EXTERN_MODULE(SendCpp_to_RN, NSObject)RCT_EXTERN_METHOD(fromCpp:(RCTResponseSenderBlock)successCallback)@end

c. Conecte o Swift ao React Native, abra o NativeModules-Bridging-Header.h arquivo

#import <React/RCTBridgeModule.h>#import <React/RCTViewManager.h>#import "WrapCpp_to_RN.h"

6. Trabalhando no lado React Native

Chame a classe Swift e suas funções

import React from 'react';
import {StyleSheet, Text, View, NativeModules, Button} from 'react-native';const App = () => {
  const onPress = () => {
    const {SendCpp_to_RN} = NativeModules;
    SendCpp_to_RN.fromCpp((_err, res) => console.log(res));
  };
  return (
    <View style={styles.container}>
      <Text> Practice !</Text>
      <Button title="C++ to React Native" color="#841584" onPress={onPress} />
    </View>
  );
};
const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
});
export default App;

E pronto, basta executar o aplicativo

react-native run-ios

Ou apenas clique no botão “executar” no Xcode e veja o que fizemos.

Espero que meu artigo seja útil para você, obrigado pelo tempo de leitura.

 Fonte: https://betterprogramming.pub/native-modules-export-c-function-to-react-native-for-beginners-77e89934b210

#cpp #cplusplus #react 

Cách Xuất Một Hàm Từ C ++ Sang React Native

Hôm nay, tôi tiếp tục chia sẻ kinh nghiệm của mình với Native Module và C ++.

Vì chúng ta sẽ thấy rất nhiều thư viện C / C ++ viết cho nền tảng di động, chúng ta cần triển khai chúng cho ứng dụng iOS hoặc React Native của mình. Đó là lý do mình muốn viết một bài hướng dẫn cách export một hàm từ C ++ sang React Native dễ hiểu và tiết kiệm thời gian cho người mới bắt đầu. Tôi sẽ bắt đầu với một ứng dụng gốc phản ứng mới

1. Tạo một ứng dụng gốc phản ứng mới, mở thiết bị đầu cuối của bạn và chạy

npx react-native init NativeModules

2. Mở Xcode và điều hướng đến NativeModules / ios / NativeModule.xcworkspace

3. Làm việc trên C ++

Tạo một tệp C ++ mới và đặt tên cho nóCpp_to_RN.cpp

Khi chúng tôi tạo tệp C ++ mới, Xcode sẽ tạo tệp tiêu đề Cpp_to_RN.hpp cho chúng tôi

Đầu tiên, mở tệp Cpp_to_RN.hpp“” và tạo một lớp bao gồm một hàm không có phần thân.

#ifndef Cpp_to_RN_hpp
#define Cpp_to_RN_hpp#include <stdio.h>
#include <string>class Cpp_to_RN {
public:
    std::string sayHello();
};#endif /* Cpp_to_RN_hpp */

Sau đó, mở Cpp_to_RN.cpptệp và viết một hàm đơn giản “ sayHello()”

#include "Cpp_to_RN.hpp"
std::string Cpp_to_RN::sayHello(){
    return "Hello from CPP";
}

4. Thao tác trên Wrapping C ++ file.

Để bọc các tệp C ++ và xuất chúng sang phía IOS (nhanh chóng)

một. Tạo một tệp Objective C và đặt tên cho nóCpp_to_RN.m

Đổi tên Cpp_to_RN.m thành Cpp_to_RN.mm

b. Mở WrapCpp_to_RN.mm tệp và viết nội dung phần nội dung sẽ bọc hàm sayHellotừ tệp C ++.

#import <Foundation/Foundation.h>
#import "WrapCpp_to_RN.h"
#import "Cpp_to_RN.hpp"@implementation WrapCpp_to_RN- (NSString *) sayHello {
  Cpp_to_RN fromCPP;
    std::string helloWorldMessage = fromCPP.sayHello();
    return [NSString
            stringWithCString:helloWorldMessage.c_str()
            encoding:NSUTF8StringEncoding];
}
@end

c. Tạo một tệp tiêu đề và đặt tên cho nóWrapCpp_to_RN.h

Xuất wrapSayHellohàm sang tệp Swift

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

5. Làm việc trên iOS (Swift)

Để xuất hàm C ++ sang React Native

một. Tạo một tệp Swift và đặt tên cho nóSendCpp_to_RN.swift

Lưu ý: Xcode sẽ yêu cầu chúng tôi tạo một NativeModules-Bridging-Header.htệp cho chúng tôi.

Tạo một lớp SendCpp_to_RNvà khai báo nó làNSObject

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

Viết một hàm requiresMainQueueSetup()để ngăn cảnh báo khi chúng tôi chạy ứng dụng

#import <Foundation/Foundation.h>
@interface WrapCpp_to_RN : NSObject
- (NSString *) wrapSayHello;
@end

Viết một hàm để bọc WrapCpp_to_RN()từWrapCpp_to_RN.mm

import Foundation@objc(SendCpp_to_RN)
class SendCpp_to_RN : NSObject {
    
  @objc static func requiresMainQueueSetup() -> Bool {
        return false
    }
  
  @objc func fromCpp(_ successCallback: RCTResponseSenderBlock) -> Void {
    successCallback([NSNull(), WrapCpp_to_RN().wrapSayHello() as Any])
    }}

b. Xuất một hàm bọc trong tệp Swift sang React Native

Tạo một tệp Objective C để xuất lớp Swift và chức năng của nó bằng cách sử dụngCallback

#import <React/RCTBridgeModule.h>
#import <Foundation/Foundation.h>
#import "UIKit/UIKit.h"
@interface RCT_EXTERN_MODULE(SendCpp_to_RN, NSObject)RCT_EXTERN_METHOD(fromCpp:(RCTResponseSenderBlock)successCallback)@end

c. Kết nối Swift với React Native, mở NativeModules-Bridging-Header.h tệp

#import <React/RCTBridgeModule.h>#import <React/RCTViewManager.h>#import "WrapCpp_to_RN.h"

6. Làm việc ở phía React Native

Gọi lớp Swift và các chức năng của nó

import React from 'react';
import {StyleSheet, Text, View, NativeModules, Button} from 'react-native';const App = () => {
  const onPress = () => {
    const {SendCpp_to_RN} = NativeModules;
    SendCpp_to_RN.fromCpp((_err, res) => console.log(res));
  };
  return (
    <View style={styles.container}>
      <Text> Practice !</Text>
      <Button title="C++ to React Native" color="#841584" onPress={onPress} />
    </View>
  );
};
const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
});
export default App;

Và chúng tôi đã hoàn tất, chỉ cần chạy ứng dụng

react-native run-ios

Hoặc chỉ cần nhấp vào nút “chạy” trên Xcode và xem những gì chúng tôi đã làm.

Tôi hy vọng bài viết của tôi hữu ích cho bạn, cảm ơn bạn đã dành thời gian đọc.

 Nguồn: https://betterprogramming.pub/native-modules-export-c- Chức năng-to-react-native-for-beginners-77e89934b210

#cpp #cplusplus #react