std::formatter<std::queue>
Defined in header <queue> | ||
|---|---|---|
template< class CharT, class T, std::formattable<CharT> Container, class... U > struct formatter<std::queue<T, Container, U...>, CharT>; | (since C++23) |
The template specialization of std::formatter for the container adaptor type std::queue allows users to convert the underlying container to its textual representation as a collection of elements using formatting functions.
The specialization is enabled if std::formattable<Container, CharT> is true.
Member types
| Name | Definition |
|---|---|
maybe-const-container |
fmt-maybe-const <Container,CharT>(exposition-only member type*) |
maybe-const-adaptor |
maybe-const <std::is_const_v< maybe-const-container>,std::queue<T,Container,U...>> (exposition-only member type*) |
Data members
| Name | Definition |
|---|---|
underlying_ | underlying formatter of type std::formatter<ranges::ref_view<maybe-const-container>,CharT>(exposition-only member object*) |
Member functions
|
parse | parses the format specifier as specified by range-format-spec (public member function) |
|
format | writes the range formatted output as specified by range-format-spec (public member function) |
std::formatter<std::queue>::parse
template< class ParseContext > constexpr auto parse( ParseContext& ctx ) -> ParseContext::iterator; |
Equivalent to return underlying_ .parse(ctx);.
Return value
An iterator past the end of the range-format-spec of the underlying container.
std::formatter<std::queue>::format
template< class FormatContext >
auto format( /*maybe-const-adaptor*/& r, FormatContext& ctx ) const
-> FormatContext::iterator;
|
Equivalent to return underlying_ .format(r.c,ctx);.
Return value
An iterator past the end of the output range.
Example
See also
|
(C++20) | defines formatting rules for a given type (class template) |
|
(C++23) | class template that helps implementing std::formatter specializations for range types (class template) |
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