std::queue<T,Container>::push_range

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template<container-compatible-range<value_type> R> void push_range( R&& rg);		(since C++23)

Inserts a copy of each element ofrg inqueue, as if by:

c.append_range(std::forward<R>(rg)) if that is a valid expression (i.e. the underlying containerc has an appropriateappend_range member function), or
ranges::copy(rg,std::back_inserter(c)) otherwise.

Each iterator in the rangerg is dereferenced exactly once.

[edit]Parameters

rg - acontainer compatible range, that is, aninput_range whose elements are convertible toT

[edit]Complexity

Identical to the complexity ofc.append_range orranges::copy(rg,std::back_inserter(c)) (depending on what function is used internally).

[edit]Notes

Feature-test macro	Value	Std	Feature
`__cpp_lib_containers_ranges`	`202202L`	(C++23)	Ranges-aware construction and insertion

[edit]Example

Run this code

#include <initializer_list>#include <queue>#include <version>#ifdef __cpp_lib_format_ranges#include <print>usingstd::println;#else#define FMT_HEADER_ONLY#include <fmt/ranges.h>using fmt::println;#endif int main(){std::queue<int> adaptor;constauto rg={1,3,2,4}; #ifdef __cpp_lib_containers_ranges    adaptor.push_range(rg);#elsefor(int e: rg)        adaptor.push(e);#endif     println("{}", adaptor);}