and that's why you always use parentheses!

Do End Your Braces

and that's why you always use parentheses!

March 19, 2012 Tagged: ruby shoulda Comments (View) Do End Your Braces Braces and do /end are completely swappable—almost all the time. They have different precedence. It’s not often that anyone comes across what this means in practice. In shoulda, these do different things: should redirect_to('#edit') { article_edit_path(@article) } should redirect_to('#edit') do article_edit_path(@article) end To get a better grasp on the differences, consider these two simple methods: def outer(inner, &block) inner block.call('outer') if block_given? end def inner(&block) block.call('inner') if block_given? 1 end Here outer is analogous to should and inner to redirect_to . Instead of having any real logic, though, they call a block with what they are. In practice: outer inner {|where| puts "#{where} called me"} # "inner called me" outer inner do |where| puts "#{where} called me" end # "...

Full article: http://robots.thoughtbot.com/post/19571992929/do-end-your...

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@grosser » 24 Mar '12, 3am
RT @markhasread: Do End Your Braces [link] nice finding
@acr » 22 Mar '12, 2pm
#ruby quick lesson in precedence Do End Your Braces [link]
@markhasread » 21 Mar '12, 5pm
Do End Your Braces [link] nice finding
@test_bosrb » 21 Mar '12, 9am
Boston Rubyist @test_thoughtbot just blogged about Do End Your Braces [link]
@id_ruby » 20 Mar '12, 8am
RT @rbudiharso: Do End Your Braces [link]
@dustalov » 19 Mar '12, 7pm
RT @ptzn: Do End Your Braces [link]
@jpablobr » 19 Mar '12, 4pm
Do End Your Braces [link] good 'cause I never use them :D
@freerobby » 19 Mar '12, 4pm
RT @timhaines: Huh. {} and do end behave differently. [link]
@AnthonyCreates » 19 Mar '12, 3pm
RT @thoughtbot "… and that's why you always use parentheses! [link]" Learned something new, hilarious image. Great post!
@TimHaines » 19 Mar '12, 3pm
Huh. {} and do end behave differently. [link]
@bulters » 19 Mar '12, 3pm
RT @archan937: Ouch! RT @thoughtbot: … and that's why you always use parentheses! [link]
@archan937 » 19 Mar '12, 3pm
Ouch! RT @thoughtbot: … and that's why you always use parentheses! [link]
@AkitaOnRails » 19 Mar '12, 3pm
RT @thoughtbot: … and that's why you always use parentheses! [link]
@thoughtbot » 19 Mar '12, 2pm
… and that's why you always use parentheses! [link]
@ischroedi » 19 Mar '12, 2pm
thoughtbot news: Do End Your Braces: Braces and do/end are completely swappable—almost all ... [link] [link]
@sazboom » 20 Mar '12, 7pm
Do End Your Braces [link]
@delicerubyrails » 20 Mar '12, 5pm
Do End Your Braces: [link]
@rubyalert » 20 Mar '12, 5pm
Do End Your Braces: [link]
@rbudiharso » 20 Mar '12, 8am
Do End Your Braces [link]
@cramm » 19 Mar '12, 9pm
[link]
@rubyalert » 19 Mar '12, 8pm
Do End Your Braces: [link]
@rwldesign » 19 Mar '12, 7pm
RT @thoughtbot: … and that's why you always use parentheses! [link]
@ptzn » 19 Mar '12, 7pm
Do End Your Braces [link]
@dkoprov » 19 Mar '12, 6pm
RT @thoughtbot: … and that's why you always use parentheses! [link]
@lucasrenan » 19 Mar '12, 5pm
RT @thoughtbot: … and that's why you always use parentheses! [link]
@sobrinho » 19 Mar '12, 4pm
RT @thoughtbot: … and that's why you always use parentheses! [link]
@fowlduck » 19 Mar '12, 3pm
RT @thoughtbot: … and that's why you always use parentheses! [link]
@planetonrails » 19 Mar '12, 3pm
Do End Your Braces [link]
@jonathanwallace » 19 Mar '12, 3pm
RT @thoughtbot: … and that's why you always use parentheses! [link]
@sikachu » 19 Mar '12, 3pm
RT @thoughtbot: … and that's why you always use parentheses! [link]