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A property to describe what guarantees an executor makes about the mapping of execution agents on to threads of execution.
struct mapping_t
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                 Name  | 
                 Description  | 
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                 A sub-property that indicates that execution agents are mapped on to new threads of execution.  | 
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                 A sub-property that indicates that the mapping of execution agents is implementation-defined.  | 
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                 A sub-property that indicates that execution agents are mapped on to threads of execution.  | 
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                 The type returned by queries against an any_executor.  | 
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                 Name  | 
                 Description  | 
|---|---|
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                 mapping_t [constructor]  | 
                 
                  Default constructor.   | 
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                 Name  | 
                 Description  | 
|---|---|
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                 is_applicable_property_v [static]  | 
                 The mapping_t property applies to executors, senders, and schedulers.  | 
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                 is_preferable [static]  | 
                 The top-level mapping_t property cannot be preferred.  | 
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                 is_requirable [static]  | 
                 The top-level mapping_t property cannot be required.  | 
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                 new_thread [static]  | 
                 A special value used for accessing the mapping_t::new_thread_t property.  | 
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                 other [static]  | 
                 A special value used for accessing the mapping_t::other_t property.  | 
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                 thread [static]  | 
                 A special value used for accessing the mapping_t::thread_t property.  | 
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                 Name  | 
                 Description  | 
|---|---|
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                 Compare property values for inequality.  | 
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                 Compare property values for equality.  | 
        Header: boost/asio/execution/mapping.hpp
      
        Convenience header: boost/asio/execution.hpp