deduction guides for std::ranges::iota_view

From cppreference.com
< cpp‎ | ranges‎ | iota view
Ranges library
Range adaptors
Defined in header <ranges>
template < class W, class Bound >

requires ( ! /*is-integer-like*/ <W> ||
! /*is-integer-like*/ <Bound> ||
/*is-signed-integer-like*/ <W> == /*is-signed-integer-like*/ <Bound> )

iota_view( W, Bound ) - > iota_view<W, Bound> ;
(since C++20)

This deduction guide is provided for iota_view

For the definitions of /*is-integer-like*/ and /*is-signed-integer-like*/, see is-integer-like

Note that the guide protects itself against bugs arising from sign mismatch, like views::iota ( 0, v.size ( ) ) , where 0 is signed and v.size()

Example

#include <cassert>
#include <ranges>
 
int main()
{
    auto io = std::ranges::iota_view(1L, 7L); // deduces W and Bound as “long”
    assert(io.front() == 1L and io.back() == 6L);
}