folly::emplace_args

Synopsis

Declared in <folly/container/Iterator.h>

template<typename... Args>
struct emplace_args
    : std::tuple<std::decay_t<Args>...>

Description

Uses inheritance instead of a type alias to std::tuple so that emplace iterators with implicit unpacking disabled can distinguish between emplace_args and std::tuple parameters.

Base Classes

Name	Description
`std::tuple<std::decay_t<Args>...>`

Types

Name
`_AssignPredicateFromPair`
`_BothImplicitlyConvertible`
`_CtorPredicateFromPair`
`_EnableAssignFromPair`
`_EnableCtorFromPair`
`_EnableCtorFromUTypesTuple`
`_EnableUTypesCtor`
`_IsThisTuple`
`_NothrowAssignFromPair`
`_NothrowConstructibleFromPair`

Type Aliases

Name	Description
`__trivially_relocatable`
`storage_type`	The underlying tuple type storing the decayed arguments.

Member Functions

Name	Description
`operator=`	Assignment operators
`swap`

Using Declarations

Name
`Unnamed using`

Non-Member Functions

Name	Description
`get_emplace_arg`	Getter function for unpacking a single emplace argument from an lvalue pack.
`get_emplace_arg`	Getter function for unpacking a single emplace argument.
`get_emplace_arg`	Getter function for unpacking a single emplace argument from a const pack.
`make_emplace_args`	Pack arguments in a tuple for assignment to a folly::emplace_iterator, folly::front_emplace_iterator, or folly::back_emplace_iterator. The iterator's operator= will unpack the tuple and pass the unpacked arguments to the container's emplace function, which in turn forwards the arguments to the (multi-argument) constructor of the target class.