Comments on: The beauty of Ruby’s array subtraction operator http://www.morelightmorelight.com/2008/06/02/the-beauty-of-rubys-array-subtraction-operator/ Illumination by Matt Katz Wed, 03 Dec 2008 23:35:16 +0000 http://wordpress.org/?v=2.5.1 By: MattK http://www.morelightmorelight.com/2008/06/02/the-beauty-of-rubys-array-subtraction-operator/#comment-92 MattK Wed, 04 Jun 2008 20:44:35 +0000 http://www.morelightmorelight.com/2008/06/02/the-beauty-of-rubys-array-subtraction-operator/#comment-92 You can eventually write ANYTHING in one line of Perl. You could definitely make this one line as well. The arrays potential_emails and delete_emails are there for readability. it coulda been puts IO.readLines(”potentials.txt”).map! {|email| email.strip.downcase} - IO.readlines(”donotemail.txt”).map! {|email| email.strip.downcase} How's that for terse? You can eventually write ANYTHING in one line of Perl.

You could definitely make this one line as well. The arrays potential_emails and delete_emails are there for readability.

it coulda been
puts IO.readLines(”potentials.txt”).map! {|email| email.strip.downcase} - IO.readlines(”donotemail.txt”).map! {|email| email.strip.downcase}

How’s that for terse?

]]> By: Nate http://www.morelightmorelight.com/2008/06/02/the-beauty-of-rubys-array-subtraction-operator/#comment-91 Nate Tue, 03 Jun 2008 20:47:52 +0000 http://www.morelightmorelight.com/2008/06/02/the-beauty-of-rubys-array-subtraction-operator/#comment-91 I gotta admit that's pretty nice - three lines! It would take me considerably more in Perl... I gotta admit that’s pretty nice - three lines! It would take me considerably more in Perl…

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