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Difference between revisions of "cpp/thread/packaged task/uses allocator"

From cppreference.com
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{{cpp/title|std::uses_allocator{{small|<std::packaged_task>}}}}
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{{cpp/title|uses_allocator{{small|<std::packaged_task>}}}}
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{{cpp/thread/packaged_task/sidebar}}
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{{cpp/thread/packaged_task/}}
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{{ddcl | notes={{mark since c++11}} |
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{{ddcl|=c++11|
 
template< class R, class Alloc >
 
template< class R, class Alloc >
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struct uses_allocator<std::promise<R>, Alloc> : true_type { };
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struct uses_allocator<std::<R>, Alloc> : true_type {};
 
}}
 
}}
  
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Provides a specialization of the {{c|std::uses_allocator}} type trait for {{c|std::packaged_task}}.
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Provides a specialization of the {{|std::uses_allocator}} type trait for {{|std::packaged_task}}.
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 +
  
 
===See also===
 
===See also===
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{{dcl list begin}}
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{{begin}}
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{{dcl list template | cpp/memory/dcl list uses allocator}}
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{{|cpp/memory/uses allocator}}
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{{dcl list end}}
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{{end
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}}

Latest revision as of 03:13, 23 October 2023

 
C++
 
Concurrency support library
Threads
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this_thread namespace
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(C++11)(C++11)(C++11)(C++11)
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Free functions for atomic flags
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(C++20)
 
std::packaged_task
 
template< class R, class Alloc >
struct uses_allocator<std::packaged_task<R>, Alloc> : true_type {};
 (since C++11)
(removed in C++17)

Provides a specialization of the std::uses_allocator type trait for std::packaged_task.

Contents

Inherited from std::integral_constant

Member constants

value
[static]
 true
(public static member constant)

Member functions

operator bool
 converts the object to bool, returns value
(public member function)
operator()
(C++14)
 returns value
(public member function)

Member types

Type Definition
value_type bool
type std::integral_constant<bool, value>

[edit] See also

(C++11)
 checks if the specified type supports uses-allocator construction
(class template) [edit]
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