Class non-type template parameters Before C++20 only integral types, enums, pointer and reference types...could be used in non-type template parameters.
具体要求,参见C++标准关于模板非类型参数的要求: 14.3.2 Template non-type arguments [temp.arg.nontype] 1 A template-argument...for a non-type, non-template template-parameter shall be one of: — an integral constant-expression...of integral or enumeration type; or — the name of a non-type template-parameter; or — the address
doesn't have to be constexpr. 7.Non-type template parameters with auto type Automatically deduce type on non-type...Remove Deprecated operator++(bool) Hexadecimal floating-point literals Allow constant evaluation for all non-type
unlikely attributes P0479R5 9 Deprecate implicit capture of this via [=] P0806R2 9 Class Types in Non-Type...definitions N4230 6 __cpp_nested_namespace_definitions >= 201411 Allow constant evaluation for all non-type...templates P0091R3 P0512R0 7 8 __cpp_deduction_guides >= 201606 __cpp_deduction_guides >= 201611 Declaring non-type
isnan判定 DCHECK What's so hard about class types as non-type template parameters?
非类型模板参数 非类型模板参数(Non-type Template Parameters)是C++中的一种特殊的模板参数,它允许在使用模板时传递非类型的值作为参数。
实现可能有问题 Moves in Returns 讨论了一些场景的返回值是否会被优化掉,copy elision的生效场景 Stringy Templates 讨论NTTP(Non-Type Template
非类型模板参数(non-type template parameters)的自动类型推导 首先要说明一下哪些属于非类型模板参数:他们是 nullptr, 整型, 左值引用, 指针 以及 枚举类型.下面的讲解主要以整型为主
. # g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ... # $ String commands...Keyspace 命令, 以__keystpace@__ 前缀发布. # E Keyevent 命令, 以__keyevent@__ 前缀发布. # g Generic 命令(non-type
``` - 关键字class(或在这种上下⽂中等价的关键字typename)指出T为**类型参数**, - int指出n的类型为int,这种参数(指定特殊的类型⽽不是⽤ 作泛型名)称为⾮类型(non-type
Be Really Awesome 介绍c++23强类型带来的优势 Did you know that C++20 added support for floating point values as non-type
(s); // OK, qualified lookup finds the template 'f' N2::f(s); // Error: N2::f does not take a non-type
c1 {1}; // OK MyContainer MyContainer c2; // OK MyContainer 用auto来声明非类型的模板参数(Declaring non-type
non-type template parameter: 非类型模板参数,比如整型,布尔,枚举,指针,引用等;此类主要是提供给大小,长度等整型标量参数的控制,其次还提供参数算术运算能力,这些能力结合模板特化为模板提供了初始化值
■ 因非类型模板参数(non-type template parameters)而造成的代码膨胀,往往可消除,做法是以函数参数或class成员变量替换template参数。
一、非类型模板参数 非类型模板参数(Non-type Template Parameters)是C++模板编程中的一个重要概念,它允许模板接受除了类型以外的其他类型的参数,比如整型、指针、引用和枚举等。
. # g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ... # $ String commands
# g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ...
领取专属 10元无门槛券
手把手带您无忧上云