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Programming-Idioms

History of Idiom 117 > diff from v55 to v56

Edit summary for version 56 by WHS:
[C++] Compatible with most STL containers, not just vector
↷

Version 55

2020-10-14, 11:09:10

Version 56

2020-12-24, 15:48:26

Idiom #117 Get list size

Set n to the number of elements of list x.

Idiom #117 Get list size

Set n to the number of elements of list x.

Variables
n,x
Variables
n,x
Extra Keywords
length
Extra Keywords
length
Code 
size_t n = x.size();
Code 
size_t n = x.size();
Comments bubble
x is a std::vector.
Comments bubble
x is a std::vector, std::list, std::array, or std::deque.
Doc URL
http://www.cplusplus.com/reference/vector/vector/size/
Doc URL
https://en.cppreference.com/w/cpp/container