etl/docs/callbacks/closure.md

title
closure

etl::closure wraps an etl::delegate and a set of arguments.

C++11 and above

etl::closure<TReturn(TArgs...)>

C++03.

etl::delegate<TReturn(TArg0)>
etl::delegate<TReturn(TArg0, TArg1)>
etl::delegate<TReturn(TArg0, TArg1, TArg2)>
etl::delegate<TReturn(TArg0, TArg1, TArg2, TArg3)>
etl::delegate<TReturn(TArg0, TArg1, TArg2, TArg3, TArg4)>

Types

delegate_type The delegate type etl::delegate<TReturn(TArgs...)>

Constructor

C++11 and above.

ETL_CONSTEXPR14 closure(const delegate_type& f, const TArgs... args)

C++03.

closure(const delegate_type& f, const TArg0 arg0)
closure(const delegate_type& f, const TArg0 arg0, const TArg1 arg1)
closure(const delegate_type& f, const TArg0 arg0, const TArg1 arg1, const TArg2 arg2)
closure(const delegate_type& f, const TArg0 arg0, const TArg1 arg1, const TArg2 arg2,
                                const TArg3 arg3)
closure(const delegate_type& f, const TArg0 arg0, const TArg1 arg1, const TArg2 arg2,
                                const TArg3 arg3, const TArg4 arg4)

Operations

template <size_t index, typename UArg>
void bind(UArg arg)

Description
Bind a new value to the argument at the specified index.
UArg must be one of TArgs.
Only non-reference types can be rebound.
Static asserts if UArg is not convertible to the closure's argument.
Static asserts if UArg is a reference type.
C++11 and above.

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template <typename... UArgs>
void bind(UArgs&&... args)

Description
Bind new values to all of the arguments at once.
The number of arguments must match the delegate.
Static asserts if the number of arguments don't match the delegate.
C++11 and above.

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ETL_CONSTEXPR14 TReturn operator()(TParams... args) const

Description
Invokes the stored delegate with the bound arguments.