Rank (computer programming): Difference between revisions

Revision as of 06:34, 29 October 2017

Revision as of 18:25, 11 May 2020

Line 7:

The box below instead shows how ''rank of a type'' and ''rank of an array expression'' could be defined (in a semi-formal style) for C++ and illustrates a simple way to calculate them at compile time.

<sourcesyntaxhighlight lang="cpp">

#include <type_traits>

#include <cstddef>

Line 44:

return rank_v<unqualified_t<T>>;

}

</syntaxhighlight>

</source>

Given the code above the rank of a type T can be calculated at compile time by

:<sourcesyntaxhighlight lang="cpp">rank<T>::value</sourcesyntaxhighlight>

or the shorter form

:<sourcesyntaxhighlight lang="cpp">rank_v<T></sourcesyntaxhighlight>

Calculating the rank of an expression can be done using

:<sourcesyntaxhighlight lang="cpp">rankof(expr)</sourcesyntaxhighlight>

==See also==