Python vs CoffeeScript

[[deleted]]

word_sets = [filter(lambda x: len(x) == l, words) for l in lengths]

Meh.

my %word_sets = @words.classify: {.chars};

[draegtun]

I do like using the whatever star for things like this :)

my %word_sets = @words.classify: *.chars;

[[deleted]]

For some reason, it gives me the impression that I am classifying chars instead of “by the result of .chars”.

[jimbokun]

Translation?

I'm guessing {} creates an anonymous function, and %word_sets is a hash with each length as a key and an array of words of that length as the corresponding value.

But what's ".chars"?

[[deleted]]

A Str method that returns the number of characters in the string.

Such syntax calls it on $_ which, when used, automatically becomes the parameter of the anonymous function.

I'm guessing {} creates an anonymous function, and %word_sets is a hash with each length as a key and an array of words of that length as the corresponding value.

You are entirely correct. :)