function.go2

package function

// Compose applies 2 functions in left to right order and applies 1 argument to the first function
//
// Parameters
//
//  • fn0: unary function
//  • fn1: unary function
//  • data: argument to the first function
//
// Return Value
//
//  • result: output value of type T2 after applying each function
//
func Compose2[A0 any, T1 any, T2 any](fn0 func(A0) T1, fn1 func(T1) T2) func(A0) T2 {
	return func(data A0) T2 {
		return fn1(fn0(data))
	}
}

// Compose applies 3 functions in left to right order and applies 1 argument to the first function
//
// Parameters
//
//  • fn0: unary function
//  • fn1: unary function
//  • fn2: unary function
//  • data: argument to the first function
//
// Return Value
//
//  • result: output value of type T3 after applying each function
//
func Compose3[A0 any, T1 any, T2 any, T3 any](fn0 func(A0) T1, fn1 func(T1) T2, fn2 func(T2) T3) func(A0) T3 {
	return func(data A0) T3 {
		return fn2(fn1(fn0(data)))
	}
}

// Compose applies 4 functions in left to right order and applies 1 argument to the first function
//
// Parameters
//
//  • fn0: unary function
//  • fn1: unary function
//  • fn2: unary function
//  • fn3: unary function
//  • data: argument to the first function
//
// Return Value
//
//  • result: output value of type T4 after applying each function
//
func Compose4[A0 any, T1 any, T2 any, T3 any, T4 any](fn0 func(A0) T1, fn1 func(T1) T2, fn2 func(T2) T3, fn3 func(T3) T4) func(A0) T4 {
	return func(data A0) T4 {
		return fn3(fn2(fn1(fn0(data))))
	}
}