When do you use a const variable instead of Constexpr?

const vs constexpr on variables [duplicate] - c++ - Stack Overflow

6 Answers 6 · C++98 did not have constexpr, so people used const. · List item “Variables” that are not constant expressions (their value is not ...

const vs. constexpr : r/cpp_questions - Reddit

const means that a variable must not change after its initialization. · constexpr actually has two different meanings: · on a function it means ...

constexpr (C++) - Microsoft Learn

A constexpr variable must be initialized at compile time. All constexpr variables are const . A variable can be declared with constexpr , when ...

const vs constexpr in C++ - CMP - Medium

If you need to define a constant value, such as a buffer size or the number of degrees in a circle, it is best practice to use constexpr , ...

When do you use a const variable instead of Constexpr? - Quora

A const variable's initializer may still be evaluated at run time. A constexpr variable's initializer must be evaluated at compile time.

const vs constexpr vs consteval vs constinit in C++20 - C++ Stories

const can be applied to all kinds of objects to indicate their immutability · const integral type with constant initialization can be used in ...

const vs constexpr. - C++ - Unreal Engine Forum

I believe constexpr is initialized during compile time, so it can be used in situations where a compile time constant is needed.

What is the difference between 'constexpr' and 'const' in C ... - Quora

constexpr variables are like const, initialized by compiler during compile time; constexpr functions if using const parameters are executed ...

C++ Const vs Constexpr: The Comparison | by Sofia Sondh - Medium

The C++ Constexpr keyword is used to declare variables and functions that can be evaluated at compile time. This means their values or results ...

5.6 — Constexpr variables - Learn C++

A constexpr variable is always a compile-time constant. As a result, a constexpr variable must be initialized with a constant expression, otherwise a ...

What is the difference between constexpr and creating a variable?

constexpr means the variable can be evaluated at compile time, it also implies that the variable is also const. 1 Like. Scott_Scott January 8, 2017, 4 ...

should i use static constexpr instead #d - C++ Forum - CPlusPlus

That const tells the user that Sample does not change when they call example(). That they can call example() on constant object. That const lets ...

const vs constexpr vs consteval vs constinit - C++ - HackingNote

variables: compile time constants. constexpr variables are implicitly const , · functions: return value is computable at compile time, e.g. ...

When to use const int, int, or #define - Arduino Forum

If you are using #define for simple constants, then 'constexpr' is preferred over 'const'. 'constexpr' does the same type checking, but it can ...

c++ - Replacing constants: when to use static constexpr and inline ...

Your go-to for global constants in C++17 should just be: inline constexpr int CONSTANT = 42;. This gets you a nice, first-class variable ...

Const vs constexpr - Ask - GameDev.tv Community Forum

I would like your opinion. I use: constexpr only for constant values const ... constexpr means that the variable/function can be evaluated ...

C++ Weekly - Ep 312 - Stop Using `constexpr` (And Use This Instead!)

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Know 'constexpr'? Here's 'consteval', 'constinit' - Learn Modern C++

Most of the time, you should prefer constexpr over constinit , especially since variables which need to be static or thread_local are ...

Should every variable be const by default? - Belay the C++

Const-correctness is reached when you use the const keyword to tell when a variable won't be modified. Then, you won't be able to inadvertently ...

When to Use const vs constexpr in C++ | Vishal Chovatiya

Often programmer would suggest using constexpr instead of a macro. · Sometimes you have an expression, that evaluated down to a constant, while ...