userver: concurrent::LazyValue< T > Class Template Reference
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concurrent::LazyValue< T > Class Template Referencefinal

#include <userver/concurrent/lazy_value.hpp>

Detailed Description

template<typename T>
class concurrent::LazyValue< T >

lazy value computation with multiple users

Definition at line 22 of file lazy_value.hpp.

Public Member Functions

 LazyValue (std::function< T()> f)
 
const T & operator() ()
 Get an already calculated result or calculate it. It is guaranteed that f is called exactly once. Can be called concurrently from multiple coroutines.
 

Constructor & Destructor Documentation

◆ LazyValue()

template<typename T >
concurrent::LazyValue< T >::LazyValue ( std::function< T()> f)
inlineexplicit

Definition at line 24 of file lazy_value.hpp.

Member Function Documentation

◆ operator()()

template<typename T >
const T & concurrent::LazyValue< T >::operator() ( )

Get an already calculated result or calculate it. It is guaranteed that f is called exactly once. Can be called concurrently from multiple coroutines.

Exceptions
anythingf throws.

Definition at line 43 of file lazy_value.hpp.


The documentation for this class was generated from the following file: