Very interesting kata, quite challenging.

Is is amazing I wouldn't have thought of that.

python new test frameworks

I did the same thing. However I am not sure if its faster than the hardcoded solution

Thanks, I didn't know.

Hi, you need to use the spoiler flag when discussing code / methods / solutions. I have added the tag.

very clever!

Is that solution same as if function that select in each operator or it will process all the operator function?

Every thing that is hard coded or using simple functions should be faster

No, it's not. In fact, over a high number of invocations of the function, it probably actually be slower (allocation + hashing + lookup vs string comparison) The point of this isn't performance, it's convenience.

This looks very nice. But could anyone tell if this is really faster than the mundane if else control flow method?

Thanks.

Smart!

Dammit I keep overcomplicating these tasks by needlessly employing loops and control flow XD

This is so smart

No it must follow the format given in the description

Only worry about the following format: (123) 456-7890 (don't forget the space after the close parentheses)