Annex D (normative)
Compatibility features
[depr]
D.20
Deprecated formatting
[depr.format]
D.20.1
Header
<format>
synopsis
[depr.format.syn]
1
#
The header
<format>
has the following additions:
namespace
std
{
template
<
class
Visitor,
class
Context
>
decltype
(
auto
)
visit_format_arg
(
Visitor
&
&
vis, basic_format_arg
<
Context
>
arg
)
;
}