match_empty_function_protocol overloads

Synopses

Declared in <folly/functional/protocol.h>

Tests a value comparable to nullptr against the empty‐function protocol.

template<typename T>
requires cx_matches_v<T>
constexpr
bool
match_empty_function_protocol(T const& t) noexcept;

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Tests a value that cannot be compared to nullptr; never matches.

template<typename T>
requires !cx_matches_v<T>
constexpr
bool
match_empty_function_protocol(T const& value) noexcept;

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Return Value

  • true if t compares equal to nullptr

  • false always

Parameters

Name

Description

t

the value to test

value

the value to test

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