Posts - Page 387 (page 387)
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5 min readBrotli is a compression algorithm developed by Google that provides better compression ratios compared to traditional HTTP compression methods like gzip. Enabling Brotli compression in NGINX allows for faster website loading times and reduced bandwidth usage.To enable Brotli compression in NGINX, follow these steps:Install Brotli on your server: Ensure you have the necessary development tools installed. Download the Brotli source code from GitHub. Compile and install it on your server.
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8 min readTo install Nginx on CentOS 7, follow the steps below:Update the system: Open a terminal or connect to your CentOS 7 server via SSH. Run the command: sudo yum update -y. Add the EPEL repository: Install the EPEL repository by running: sudo yum install epel-release -y. Install Nginx: Run the command: sudo yum install nginx -y. Confirm the installation by pressing 'y' when prompted. Start and enable Nginx: To start the Nginx service, run: sudo systemctl start nginx.
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14 min readSetting up an NGINX reverse proxy involves the following steps:Install NGINX: Begin by installing NGINX on your server or computer. The installation process may vary depending on your operating system. Configure NGINX: Once installed, locate the NGINX configuration file. In most cases, it is located at /etc/nginx/nginx.conf. Open this file in a text editor of your choice. Set up upstream servers: Define the backend servers that NGINX will proxy requests to.
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5 min readIn Dart, you can pass a list as a parameter to a function or method. This allows you to perform operations on the elements of the list within the function. To pass a list as a parameter in Dart, you need to follow these steps:Declare the function or method that accepts the list as a parameter. For example: void processList(List<int> numbers) { // Function body } Here, the function processList takes a list of integers (List<int> numbers) as a parameter.
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6 min readIn Dart, you can pass functions as parameters to other functions. This allows you to pass behavior to methods, enabling dynamic and flexible programming.To pass a function as a parameter, you need to define a parameter with a matching function signature. A function signature includes the return type, function name, and parameter types of the function being passed.
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3 min readIn Dart, you can use the print() function to output text to the console or standard output. By default, print() adds a newline character at the end of the output. However, if you want to print without a newline, you can use the write() function from the dart:io library.Here's an example of how you can print without a newline in Dart: import 'dart:io'; void main() { stdout.write("Hello"); stdout.
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5 min readTo convert JSON to a map in Dart, you can use the dart:convert library. Follow the steps below:Import the dart:convert library: import 'dart:convert'; Define a string variable containing the JSON data: String jsonString = '{"name": "John", "age": 30, "city": "New York"}'; Use the json.decode() function to convert the JSON string to a Map: Map<String, dynamic> jsonMap = json.
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4 min readIn Dart, converting JSON to an object can be achieved using the built-in dart:convert library. Here is a step-by-step guide on how to perform the conversion:Import the required package by adding this import statement at the top of your Dart file: import 'dart:convert'; Create a class that represents the structure of your JSON data. In this class, define fields that match the keys in your JSON.
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5 min readTo create a JSON object in Dart, you can use the json package provided by the Dart SDK. Here's an example of how to create a JSON object in Dart:First, make sure to import the dart:convert library: import 'dart:convert'; Next, you can define your data structure and populate it with values. For example, let's create a Person class with properties such as name, age, and email: class Person { final String name; final int age; final String email; Person({required this.
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5 min readTo read a JSON file in Dart, you can follow these steps:Import the dart:io package to access file handling functionalities: import 'dart:io'; Import the dart:convert package to convert JSON data: import 'dart:convert'; Read the JSON file using File class from the dart:io package: String fileContent = await File('path/to/file.json').readAsString(); Parse the JSON data using jsonDecode() method from the dart:convert package.
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3 min readTo iterate a list in Dart, you can use either a for loop or the forEach() method. Here's how you can do it:Using a for loop: List<String> myList = ['apple', 'banana', 'orange']; for (int i = 0; i < myList.length; i++) { String item = myList[i]; // Perform operations on each item print(item); } Using the forEach() method: List<String> myList = ['apple', 'banana', 'orange']; myList.
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9 min readTo generate a secret key using Dart programming language, you can follow the steps mentioned below:Import the dart:convert library to access the necessary encoding functionality: import 'dart:convert'; Generate a random list or string of bytes using the SecureRandom class from the dart:math library: import 'dart:math'; import 'dart:typed_data'; Uint8List generateRandomBytes(int length) { final random = Random.secure(); final values = List.