constexpr | constexpr specifier (since C++11)

Keyword	CPC	PCC	Volume	Score	Length of keyword
constexpr	0.2	0.7	9255	48	9

Keyword	CPC	PCC	Volume	Score
constexpr	1.78	1	214	27
constexpr c++	0.86	0.3	8996	100
constexpr vs const	0.58	0.6	9948	21
constexpr string	0.7	0.9	6981	96
constexpr function	0.59	1	3136	37
constexpr auto	0.31	1	5406	88
constexpr array	1.5	0.8	8212	26
constexpr static	1.18	0.3	7206	73
constexpr constructor	0.12	0.8	9102	81
constexpr inline	1.67	1	5150	32
constexpr const char*	1.29	0.6	390	48
constexpr consteval	1.48	0.4	4131	18
constexpr cppreference	1.56	0.4	5647	45
constexpr define	0.93	0.1	5196	70
constexpr function c++	0.93	0.2	5204	22
constexpr needed for in-class initialization	1.9	0.7	795	38

Search Results related to constexpr on Search Engine

constexpr specifier (since C++11) - cppreference.com
cppreference.com

https://en.cppreference.com/w/cpp/language/constexpr

WEBOct 30, 2023 · A constexpr specifier used in a function or static data member (since C++17) declaration implies inline. If any declaration of a function or function template has a constexpr specifier, then every declaration must contain that specifier. constexpr variable. A constexpr variable must satisfy the following requirements: its type must be a …

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constexpr (C++) | Microsoft Learn
microsoft.com

https://learn.microsoft.com/en-us/cpp/cpp/constexpr-cpp?view=msvc-170

WEBArticle. 02/21/2023. 9 contributors. Feedback. In this article. Syntax. Parameters. Return value. constexpr variables. Show 5 more. The keyword constexpr was introduced in C++11 and improved in C++14. It means constant expression. Like const, it can be applied to variables: A compiler error is raised when any code attempts to modify the value.

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What's the difference between constexpr and const?
stackoverflow.com

https://stackoverflow.com/questions/14116003/whats-the-difference-between-constexpr-and-const

WEBJan 2, 2013 · An overview of the const and constexpr keywords. In C ++, if a const object is initialized with a constant expression, we can use our const object wherever a constant expression is required. const int x = 10; int a[x] = {0}; For example, we can make a case statement in switch. constexpr can be used with arrays.

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Understanding constexpr Specifier in C++ - GeeksforGeeks
geeksforgeeks.org

https://www.geeksforgeeks.org/understanding-constexper-specifier-in-cpp/

WEBJan 17, 2023 · constexpr is a feature added in C++ 11. The main idea is a performance improvement of programs by doing computations at compile time rather than run time. Note that once a program is compiled and finalized by …

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Constant expressions - cppreference.com
cppreference.com

https://en.cppreference.com/w/cpp/language/constant_expression

WEBJan 22, 2024 · a control flow that passes through a declaration of a variable with static or thread-local storage duration, and unusable in constant expressions. a function call expression that calls a function (or a constructor) that is not declared constexpr.

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C++ keyword: constexpr (since C++11) - cppreference.com
cppreference.com

https://en.cppreference.com/w/cpp/keyword/constexpr

WEBApr 20, 2021 · constexpr if statement (since C++17) lambda-declarator that explicitly specifies the function call to be a constexpr function (since C++17) Retrieved from " ". This page was last modified on 20 April 2021, at 00:32. This …

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5.8 — Constexpr and consteval functions – Learn C
learncpp.com

https://www.learncpp.com/cpp-tutorial/constexpr-and-consteval-functions/

WEBMar 13, 2024 · A constexpr function is a function whose return value may be computed at compile-time. To make a function a constexpr function, we simply use the constexpr keyword in front of the return type. Here’s a similar program to the one above, using a constexpr function:

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5.5 — Constexpr variables – Learn C++
learncpp.com

https://www.learncpp.com/cpp-tutorial/constexpr-variables/

WEBConstexpr means that an object must have a value that is known at compile-time. Constexpr variables are implicitly const. Const variables are not implicitly constexpr (except for const integral variables with a constant expression initializer).

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constexpr specifier (since C++11) - cppreference.com
uchicago.edu

http://naipc.uchicago.edu/2014/ref/cppreference/en/cpp/language/constexpr.html

WEBThe constexpr specifier declares that it is possible to evaluate the value of the function or variable at compile time. Such variables and functions can then be used where only compile time constant expressions are allowed. constexpr implies const . A constexpr variable must satisfy the following requirements:

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c++ - What are 'constexpr' useful for? - Stack Overflow
stackoverflow.com

https://stackoverflow.com/questions/27473795/what-are-constexpr-useful-for

WEBWhat are 'constexpr' useful for? Asked 9 years, 4 months ago. Modified 5 years, 9 months ago. Viewed 9k times. 17. I really can't find any use of it. My first idea was that I could use it to implement 'Design by Contract' without using macros like this: struct S. { . S(constexpr int i) : S(i) { static_assert( i < 9, "i must be < 9" ); }

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