folly::gen::detail::UnwrapOr< T > Class Template Reference

#include <Base-inl.h>

Public Member Functions
	UnwrapOr (T &&value)
	UnwrapOr (const T &value)
T &	value ()
const T &	value () const

Private Attributes
T	value_

Detailed Description

template<class T>
class folly::gen::detail::UnwrapOr< T >

UnwrapOr - For unwrapping folly::Optional values, or providing the given fallback value. Usually used through the 'unwrapOr' helper like so:

auto best = from(scores) | max | unwrapOr(-1);

Note that the fallback value needn't match the value in the Optional it is unwrapping. If mis-matched types are supported, the common type of the two is returned by value. If the types match, a reference (T&& > T& > const T&) is returned.

Definition at line 2363 of file Base-inl.h.

Constructor & Destructor Documentation

template<class T>

folly::gen::detail::UnwrapOr< T >::UnwrapOr ( T &&  value )

inlineexplicit

Definition at line 2365 of file Base-inl.h.

: value_(std::move(value)) {}

template<class T>

folly::gen::detail::UnwrapOr< T >::UnwrapOr ( const T &  value )

inlineexplicit

Definition at line 2366 of file Base-inl.h.

: value_(value) {}

Member Function Documentation

template<class T>

T& folly::gen::detail::UnwrapOr< T >::value ( )

inline

Definition at line 2368 of file Base-inl.h.

Referenced by folly::gen::detail::operator|().

             {
    return value_;
  }

template<class T>

const T& folly::gen::detail::UnwrapOr< T >::value ( ) const

inline

Definition at line 2371 of file Base-inl.h.

                         {
    return value_;
  }

Member Data Documentation

template<class T>

T folly::gen::detail::UnwrapOr< T >::value_

private

Definition at line 2376 of file Base-inl.h.

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

• proxygen/folly/folly/gen/Base-inl.h