struct ValueIsPresent

Declaration

template <typename T, typename Enable = void>
struct ValueIsPresent { /* full declaration omitted */ };

Description

ValueIsPresent provides a way to check if a value is, well, present. For pointers, this is the equivalent of checking against nullptr, for Optionals this is the equivalent of checking hasValue(). It also provides a method for unwrapping a value (think dereferencing a pointer).

Declared at: llvm/include/llvm/Support/Casting.h:631

Templates

T

Enable = void

Method Overview

• public static inline bool isPresent(const T & t)
• public static inline decltype(auto) unwrapValue(T & t)

Methods

¶static inline bool isPresent(const T& t)

Declared at: llvm/include/llvm/Support/Casting.h:633

Parameters

const T& t

¶static inline decltype(auto) unwrapValue(T& t)

Declared at: llvm/include/llvm/Support/Casting.h:634

Parameters

T& t