至于说还想表达 immutable array / object，目前在原生 js 里没有很好的办法（虽然可以用 Object.freeze...
constint*a=&[1] //非常量数据的常量指针 指针常量 intconst*a=&[2] //非常量数据的常量指针 ais a pointer to the constant char variable int*consta=&[3] //常量数据的非常量指针指针常量 常量指针a is a constant pointer to the (non-constant) char variable constint*consta=&[4] //常量数据...
> void foo(int * const array)[/color] You can pass a [const] reference to the array which also guarantees that the function is called with a statically sized array (for whatever this may be a good thing): /**/ template <int size> /**/ void foo(int const (&array)[size]) /**...
// constexpr.cpp// Compile with: cl /EHsc /W4 constexpr.cpp#include<iostream>usingnamespacestd;// Pass by valueconstexprfloatexp(floatx,intn){returnn ==0?1: n %2==0?exp(x * x, n /2) :exp(x * x, (n -1) /2) * x; }// Pass by referenceconstexprfloatexp2(constfloat&...
A new Array A new Object A new Function A new RegExp Constant Objects and Arrays The keywordconstis a little misleading. It does not define a constant value. It defines a constant reference to a value. Because of this you can NOT: ...
// constant_values2.cpp// compile with: /cconstintmaxarray =255;charstore_char[maxarray];// allowed in C++; not allowed in C In C, constant values default to external linkage, so they can appear only in source files. In C++, constant values default to internal linkage, which allows ...
ReferenceAssemblyAttribute RefSafetyRulesAttribute RequiredAttributeAttribute RequiredMemberAttribute RequiresLocationAttribute RuleCache<T> RuntimeCompatibilityAttribute RuntimeFeature RuntimeHelpers RuntimeHelpers.CleanupCode RuntimeHelpers.TryCode RuntimeWrappedException ...
引用(reference)为对象起了另外一个名字,引用类型引用(refers to)另外一种类型。通过将声明符写成&d的形式来定义引用类型,其中d是声明的变量名。 概念: 一般在初始化变量时,初始值会被拷贝到新建的对象中。然而定义引用时,程序把引用和它的初始值绑定(bind)在一起,而不是将初始值拷贝给引用。
所以如果一个 constexpr 函数返回一个std::vector,只能额外包装一层把这个std::vector转成std::array然后作为全局变量 constexpr auto f() { return std::vector<int>{1, 2, 3}; } constexpr auto arr = [](){ constexpr auto len = f().size(); std::array<int, len> result{}; auto temp ...
// constexpr.cpp// Compile with: cl /EHsc /W4 constexpr.cpp#include<iostream>usingnamespacestd;// Pass by valueconstexprfloatexp(floatx,intn){returnn ==0?1: n %2==0?exp(x * x, n /2) :exp(x * x, (n -1) /2) * x; }// Pass by referenceconstexprfloatexp2(constfloat&...