Latest10 Essential Code Snippets for Every Developer

10 Essential Code Snippets for Every Developer

No matter what your preferred language or platform may be, there are certain code snippets that are universally useful. These handy pieces of code can save you time, reduce errors, and enhance your programming efficiency. In this article, we will explore 10 essential code snippets that every developer should have in their arsenal.

1. Generating a Random Number

import java.util.Random;
Random rand = new Random();
int randomNum = rand.nextInt((max - min) + 1) + min;

2. Checking if an Array is Empty

def is_empty(arr):
  return len(arr) == 0

3. Creating a Countdown Timer

function countdownTimer(minutes) {
  let seconds = minutes * 60;
  const countdown = setInterval(function () {
    seconds--;
    if (seconds < 0) {
      clearInterval(countdown);
    } else {
      console.log(seconds + " seconds left");
    }
  }, 1000);
}

4. Sorting an Array of Objects

function sortByProperty(arr, property) {
  return arr.sort((a, b) => (a[property] > b[property] ? 1 : -1));
}

5. Reading a File in Python

def read_file(filename):
    with open(filename, 'r') as file:
        data = file.read()
    return data

6. Writing to a File in Python

def write_file(filename, content):
    with open(filename, 'w') as file:
        file.write(content)

7. Connecting to a Database in PHP

$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

8. Fetching Data from an API in JavaScript

fetch("https://api.example.com/data")
  .then((response) => response.json())
  .then((data) => console.log(data))
  .catch((error) => console.log("Error:", error));

9. Creating a Simple Server in Node.js

const http = require("http");

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader("Content-Type", "text/plain");
  res.end("Hello World\n");
});

server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});

10. Querying a Database in SQL

SELECT * FROM table_name WHERE condition;

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