lnd/lnutils/stream.go

package lnutils

// Map takes an input slice, and applies the function f to each element,
// yielding a new slice.
func Map[T1, T2 any](s []T1, f func(T1) T2) []T2 {
	r := make([]T2, len(s))

	for i, v := range s {
		r[i] = f(v)
	}

	return r
}
multi: add `lnutils` to host fundamental utility functions We also move the `fn/stream.go` into the package `lnutils`. Eventually we will put all the [utility functions](https://github.com/lightninglabs/taro/tree/main/chanutils) into this package. 2023-01-19 06:31:17 +08:00			`package lnutils`
fn: add new fn (func utils) package for generic helper funcs We start with a simple Map function that can be useful for transforming objects on the fly. We may want to eventually make this Taro pakage into a module so we can just have everything in one place: https://github.com/lightninglabs/taro/tree/main/chanutils. 2022-12-06 18:32:06 -08:00
			`// Map takes an input slice, and applies the function f to each element,`
			`// yielding a new slice.`
			`func Map[T1, T2 any](s []T1, f func(T1) T2) []T2 {`
			`r := make([]T2, len(s))`

			`for i, v := range s {`
			`r[i] = f(v)`
			`}`

			`return r`
			`}`