map.go

// Have I missed something? Why doesn't Go's stdlib have this?
// Surely it's one of the first things you add when you've just added generics support?

func Map[FromType, ToType any](slice []FromType, f func(FromType) ToType) []ToType {

  var result = make([]ToType, len(slice))
  
  for i, v := range slice {
    result[i] = f(v)
  }
  
  return result
}