23 Ranges library [ranges]

23.6 Range factories [range.factories]

23.6.2 Single view [range.single]

23.6.2.1 Overview [range.single.overview]

1
#
single_­view produces a View that contains exactly one element of a specified value.
2
#
[ Example
: 
single_view s{4};
for (int i : s)
  cout << i; // prints 4
— end example
 ]