core/cmd/twhelp/utils.go

package main

func concatSlices[T any](slices ...[]T) []T {
	var totalLen int

	for _, s := range slices {
		totalLen += len(s)
	}

	result := make([]T, totalLen)

	var i int

	for _, s := range slices {
		i += copy(result[i:], s)
	}

	return result
}