I'm not asking for any enforcement here. Ideally, I'd like to see this section of the specification either removed altogether or rewritten as an "extra challenge" note. The phrase "Please use" is ambiguous—it's unclear whether the author intends to prohibit certain solutions or simply wants to guide us in a particular direction.

Both @Aneadiel and @dfhwze made valid, useful, accurate statements regarding the nature of this solution and how the testing suite has been designed to handle it.

to elaborate / paraphrase @Aneadiel: "they didn't solve the kata as expected because they used DDL"

to elaborate / paraphrase @dfhwze: "yeah, but there is no testing code that fails solutions that use DML, so any user that does so will get away with it"

THEY each respectfully contributed to the advancement of understanding of the situation from which to learn for all readers thereafter perusing this particular comment thread...

So, to bring you up to speed on to what enforcement refers, (or in this case the lack thereof); it's the code within a testing suite that specifically prevents solutions that do not observe the specs provided in the description from passing the kata.

It's a request, what enforcement do you want? Police to show up?

This is DDL not DML = )

but it is not enforced

It specifically states to use DML not DDL

Easy to read and understand!

Hello trying to learn python. I feel stumped by many of the problems. It would be helpful to know what resources you all use to help find solutions. I am a newbie and willing to learn.

I feel so dumb. First time doing some c++ katas, how do I include the standard library?

It is possible to use console.log straight into the code mirror and messages will be outputted in the output panel instead of the browser console.

I think it's easier to try your code on your computer throught NodeJS. Once your code is debugged and it works you can copy & paste your solution.

You can just print the input in your functions, it's enough for debugging this.

Moreover, you can event print the preloaded dictionary if you can't live without IDE. :)

Aha! Yes I looked at indexOf for a moment, but I just read the description briefly and thought that there was only 4 valid smileys. This changes everything. ;)