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文章 2024-06-28 来自：开发者社区

JavaScript中的const关键字解析

在JavaScript中，const关键字用于声明常量，即那些一旦赋值后就不应更改的变量。它在许多方面与let关键字类似，但增加了一个重要的约束条件——必须在声明时初始化，并且之后尝试修改其值会导致错误。下面将深入探讨const的特性及其使用场景。初始化与不可变性初始化要求：与let不同，使用const声明变量时，必须立即为其赋予初始值。不提供初始值会导致语法错误...

文章 2023-12-23 来自：开发者社区

C++ 中 const 和 constexpr 关键字解析：常量、函数和指针

很多 C++ 的初学者看到 const 这个关键字的第一反应都是一头雾水，主要是因为 const可以出现在很多的位置，以及后面加入的 constexpr 更是常常感到困惑，今天就为大家一一解释出现它们的含义和以及作用 const关键字 const修饰变量这是最基本的一种用法，顾名思义，就是将该变量修饰为常...

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更新时间 2024-06-29 11:20:21

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