Python vs. Ruby for metaprogramming [closed]

Answer 1

Compare code examples that do the same thing (join with a newline non-empty descriptions of items from a myList list) in different languages (languages are arranged in reverse-alphabetic order):

Ruby:

myList.collect { |f| f.description }.select { |d| d != "" }.join("\n")

Or

myList.map(&:description).reject(&:empty?).join("\n")

Python:

descriptions = (f.description() for f in mylist)
"\n".join(filter(len, descriptions)) 

Or

"\n".join(f.description() for f in mylist if f.description())

Perl:

join "\n", grep { $_ } map { $_->description } @myList;

Or

join "\n", grep /./, map { $_->description } @myList;

Javascript:

myList.map(function(e) e.description())
      .filter(function(e) e).join("\n")

Io:

myList collect(description) select(!="") join("\n")

Here's an Io guide.