Comments on: TIL: It’s OK to return nil from to_ary http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/ The act of making love, tenderly. Mon, 07 May 2012 22:50:19 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Robert Pankowecki http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/comment-page-1/#comment-138143 Robert Pankowecki Thu, 30 Jun 2011 07:31:07 +0000 http://tenderlovemaking.com/?p=545#comment-138143 @Ben Hamil : http://floehopper.lighthouseapp.com/projects/22289-mocha/tickets/70 I think lot of people sooner of later comes to this problem. @Ben Hamil : http://floehopper.lighthouseapp.com/projects/22289-mocha/tickets/70
I think lot of people sooner of later comes to this problem.

]]> By: Josh Ellithorpe http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/comment-page-1/#comment-138142 Josh Ellithorpe Thu, 30 Jun 2011 07:17:57 +0000 http://tenderlovemaking.com/?p=545#comment-138142 This is actually quite useful. I have been using Array() a bit more often after the confident code talk at RailsConf. Simple fix, but I really don't think Ruby should fire into method_missing for this. If respond_to? is false, that seems pretty explicit. I am curious however if anything is actually needs this behavior in the wild. If not, we can always propose a change in future versions of Ruby. Nothing is set in stone, till too many people use it. This is actually quite useful. I have been using Array() a bit more often after the confident code talk at RailsConf. Simple fix, but I really don’t think Ruby should fire into method_missing for this. If respond_to? is false, that seems pretty explicit.

I am curious however if anything is actually needs this behavior in the wild. If not, we can always propose a change in future versions of Ruby. Nothing is set in stone, till too many people use it.

]]> By: Aaron Patterson http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/comment-page-1/#comment-138109 Aaron Patterson Wed, 29 Jun 2011 15:39:41 +0000 http://tenderlovemaking.com/?p=545#comment-138109 @Avdi I totally agree. If I say I don't respond to to_ary, why is it being called?!? @Avdi I totally agree. If I say I don’t respond to to_ary, why is it being called?!?

]]> By: Avdi Grimm http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/comment-page-1/#comment-138108 Avdi Grimm Wed, 29 Jun 2011 15:24:07 +0000 http://tenderlovemaking.com/?p=545#comment-138108 P.S. On re-read, blurg. I'm kinda surprised Ruby tries THAT hard to get to_ary; it seems like it would have been reasonable to say "look, if you broke respond_to?() we're not calling your to_ary()". Especially since I don't think ANY built-ins or stdlibs violate that expectation. But it's good to know def `to_ary; nil end` is the magic "NO SERIOUSLY I DON'T CONVERT" flag. P.S. On re-read, blurg. I’m kinda surprised Ruby tries THAT hard to get to_ary; it seems like it would have been reasonable to say “look, if you broke respond_to?() we’re not calling your to_ary()”. Especially since I don’t think ANY built-ins or stdlibs violate that expectation.

But it’s good to know def `to_ary; nil end` is the magic “NO SERIOUSLY I DON’T CONVERT” flag.

]]> By: Ben Hamill http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/comment-page-1/#comment-138096 Ben Hamill Wed, 29 Jun 2011 04:35:28 +0000 http://tenderlovemaking.com/?p=545#comment-138096 I ran into this weirdness when RSpec was complaining that some mock object was receiving an unexpected message (to_ary). Somewhere in my code, I had an array of arrays of mocks (or, since it was a simplified unit test, probably just [[mock]]). Related post: http://yehudakatz.com/2010/01/02/the-craziest-fing-bug-ive-ever-seen/ Seems insane that this exception is used for flow like that. I didn't know about Array() and to_a. Having gotten into Avdi's recent material about code confidence and exceptions, I expect that'd be one to bite me sooner or later. Great post, man. I ran into this weirdness when RSpec was complaining that some mock object was receiving an unexpected message (to_ary). Somewhere in my code, I had an array of arrays of mocks (or, since it was a simplified unit test, probably just [[mock]]).

Related post: http://yehudakatz.com/2010/01/02/the-craziest-fing-bug-ive-ever-seen/

Seems insane that this exception is used for flow like that. I didn’t know about Array() and to_a. Having gotten into Avdi’s recent material about code confidence and exceptions, I expect that’d be one to bite me sooner or later. Great post, man.

]]> By: Mark Turner http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/comment-page-1/#comment-138093 Mark Turner Wed, 29 Jun 2011 02:21:57 +0000 http://tenderlovemaking.com/?p=545#comment-138093 Great little writeup. Thanks Aaron! Great little writeup. Thanks Aaron!

]]> By: Avdi Grimm http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/comment-page-1/#comment-138090 Avdi Grimm Tue, 28 Jun 2011 23:48:58 +0000 http://tenderlovemaking.com/?p=545#comment-138090 Well that was darned interesting. Thank you! Well that was darned interesting. Thank you!

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