concurrent::LazyValue< T > Class Template Reference

Table of Contents

• Public Member Functions
• Detailed Description
• Constructor & Destructor Documentation
• LazyValue()
• Member Function Documentation
• operator()()

lazy value computation with multiple users More...

#include <userver/concurrent/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.

Detailed Description

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

lazy value computation with multiple users

Definition at line 22 of file lazy_value.hpp.

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

anything

f throws.

Definition at line 43 of file lazy_value.hpp.

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

• userver/concurrent/lazy_value.hpp