On Jan 16, 2012, at 12:33 PM, Agis A. wrote: > Hi there people! > > I'm a newbie to both Rails & Ruby, I've just started reading the "Agile > Development with Rails" book yesterday. > > I've noticed that in most of the times, we 're calling functions without > parentheses like validates :title, presence: true or assert product.invalid? > Sometimes though (mostly in views as I've noticed) we're using parentheses, > like <%= number_to_currency(product.price, unit: "€").
You'll notice that when you do end up using the parentheses, it's to disambiguate nested function calls: link_to 'foo', @bar, baz => 'blarg' vs link_to 'foo', bar_path(bar), baz => 'blarg' or more elaborately link_to( 'foo', bar_path(bar), baz => 'blarg' ) if bar > > My question: is this generally the preferred way to code in Rails? If yes, > why? Sorry if this sounds silly but I can't clearly see why we prefer one way > over the other. > > Also, I think it's kinda hard to get used to the parentheses-less style, > cause everytime I see a line of code I must closely watch it's syntax to > determine if this is a function call or something else. Is it only me? No, it's not just you. Mostly, though, I find that it makes it difficult to switch back and forth between Ruby and JavaScript, as I need to do every day. I keep making newbie mistakes in JS like leaving the parentheses out of if statements. > > Generally, I'm following the rule that every piece of code that has a word > and then a space and then something else, for example respond_to :blah, blu: > 'test' is a function call, isn't that right? Seems like a good way to put it. Walter > > Thanks in advance. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/rubyonrails-talk/-/6acBFxIsxXAJ. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
