Func4<T1, T2, T3, T4, R> typedef
Func4<T1, T2, T3, T4, R> =
R Function(T1, T2, T3, T4)
Represents a function with four arguments: (T1, T2, T3, T4) -> R
.
Implementation
typedef Func4<T1, T2, T3, T4, R> = R Function(T1, T2, T3, T4);