Flex :: Creating One File Per Function With Same Name?

I am relatively new to Flex/ActionScript, but I have been using a pattern of creating one file per function in my util package - with the name of the file being the same as the name of the function.

Like if the file was convertTime.as:
package util{
public function convertTime(s:String):Date{
...
}}

This way I can import the function readily by doing:
import util.convertTime;
...
convertTime(...);

I like this way better than importing a class object and then calling the static methods hanging off of it, like this:
import util.Util;
...
Util.convertTime(...);

But, the more I do this, the more files I'll end up with, and it also seems a bit wasteful/silly to put only one function into a file, especially when the function is small. Is there another alternative to this? Or are these two options the only ones I have?