Home>
struct S {
array<int, 1000>vals;
constexpr S (int _val): vals ({_ val}) {}
};
struct T {
int val;
static constexpr S stk = S (100);
// static const S stk = S (100);
T (int i): val (stk.vals [i]) {}
void set (int i) {val = stk.vals [i];}
};I understand thatstatic const S stk = S (100);is not available for the above code, butstatic constexpr S stk = S (100);I didn't know why using code>did not cause an error.
-
Does
static constexpr S stk = S (100);exist at runtime?T :: stkis used in two places. Willarraybe generated in two places?
-
Answer # 1
Related articles
- The difference between define () and const in PHP
- c ++ - i want to know the difference between the light information of the vertex information and the material information direct
- The difference between PHP constant define and const
- In-depth analysis of the difference between static and templates in springboot
- Analysis of the difference between self and static in PHP object-oriented programming
- dart: difference between final and const
- Understand the difference between let and var and const keywords in JavaScript
- c ++ - difference in comparison operation between insert, select and bubble sort
- Explain the difference between static and final and static final
- [javascript] difference between let and const when declaring a function
- c ++ - difference between int and int
- The difference between let and const in ES6
- The essential difference between Vue page switching and a link
- Learn a bit about Vue's data responsiveness (the difference between Vue2 and Vue3)
- The difference between array assignment and copy in python
- Analysis of the difference between break in scala and java
- Java beginners understand the difference between "==" and equals
- Simple understanding of the difference between Java keywords throw and throws
- The difference between self, this and operation methods in php
- Explain the difference between sysstdout and print
Related questions
- c ++ - about imgui's imguitreenodeflags_notreepushonopen
- [c ++] after defining a non-inline function, redeclare it as inline
- c ++ - how to use metaprogramming
- c ++ - how to make a meta function that only materializes a vector
- c ++ - why isn't the inherited method called?
- c ++ - operation of range for statement (for (:))
- c ++ - the queue does not work well
- c ++ - aoj judge doesn't work
- c ++ - are there any differences between the following constants?
- c ++ - about binary operators why isn't the following number equal to 5?
stkis ODR-used (written, addressed, or bound to a reference). If not, it may not exist.In addition, I feel that it was impossible to write without taking a reference, so I think that it will be ODR-use if you bind a real reference or take an address.
static constexpris implicitly specified asinline, so there is only one entity.Reference