Getting rid of self
in [Ruby]
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From: Andrea Dallera on 16 Jun 2010 05:37 [Note: parts of this message were removed to make it a legal post.] Have you tried it like this? --- def initialize(attributes = nil) super attributes step = 0 national_debt = 0 sum_of_income = 0 sum_of_taxes = 0 sum_of_happiness = 0 sum_of_investments = 0 end --- 'self' is the default receiver inside a method HTH -- Andrea Dallera http://github.com/bolthar/freightrain http://usingimho.wordpress.com Il 16/06/2010 11.31, Ralph Shnelvar ha scritto: > > Consider > > > --- > > def initialize(attributes = nil) > > super attributes > > self.step = 0 > > self.national_debt = 0 > > self.sum_of_income = 0 > > self.sum_of_taxes = 0 > > self.sum_of_happiness = 0 > > self.sum_of_investments = 0 > > self > > end > > --- > > > > Please focus on the repeated use of self. > > > Is there some way to set the, uh, environment so that "self" need not > be repeated? > > > (Joke: Hmm, if you get rid of your self, do you commit suicide?) > > > >
From: Jesús Gabriel y Galán on 16 Jun 2010 05:46 On Wed, Jun 16, 2010 at 11:37 AM, Andrea Dallera <andrea(a)andreadallera.com> wrote: > Have you tried it like this? > > > --- > > def initialize(attributes = nil) > > super attributes > > step = 0 > > national_debt = 0 > > sum_of_income = 0 > > sum_of_taxes = 0 > > sum_of_happiness = 0 > > sum_of_investments = 0 > > end > > --- > > > 'self' is the default receiver inside a method That won't work, because the parser sees this as local variable assignments, and not method calls. I don't know an easy way to remove that. Jesus.
From: Jason Roelofs on 16 Jun 2010 07:28 2010/6/16 Jesús Gabriel y Galán <jgabrielygalan(a)gmail.com> > On Wed, Jun 16, 2010 at 11:37 AM, Andrea Dallera > <andrea(a)andreadallera.com> wrote: > > Have you tried it like this? > > > > > > --- > > > > def initialize(attributes = nil) > > > > super attributes > > > > step = 0 > > > > national_debt = 0 > > > > sum_of_income = 0 > > > > sum_of_taxes = 0 > > > > sum_of_happiness = 0 > > > > sum_of_investments = 0 > > > > end > > > > --- > > > > > > 'self' is the default receiver inside a method > > That won't work, because the parser sees this as local variable > assignments, and not method calls. > I don't know an easy way to remove that. > If they're ivars (attr_accessible), then just use the ivar itself. If they are methods on the class, then you'll need the self for there reason you mentioned: def initialize(attributes = nil) super # If exact signature, don't need arguments @step = 0 @national_debt = 0 @sum_of_income = 0 @sum_of_taxes = 0 @sum_of_happiness = 0 @sum_of_investments = 0 end Oh, and you never need to return anything from #initialize. Jason
From: Jesús Gabriel y Galán on 16 Jun 2010 07:31 On Wed, Jun 16, 2010 at 1:28 PM, Jason Roelofs <jameskilton(a)gmail.com> wrote: > 2010/6/16 Jesús Gabriel y Galán <jgabrielygalan(a)gmail.com> > >> On Wed, Jun 16, 2010 at 11:37 AM, Andrea Dallera >> <andrea(a)andreadallera.com> wrote: >> > Have you tried it like this? >> > >> > >> > --- >> > >> > def initialize(attributes = nil) >> > >> > super attributes >> > >> > step = 0 >> > >> > national_debt = 0 >> > >> > sum_of_income = 0 >> > >> > sum_of_taxes = 0 >> > >> > sum_of_happiness = 0 >> > >> > sum_of_investments = 0 >> > >> > end >> > >> > --- >> > >> > >> > 'self' is the default receiver inside a method >> >> That won't work, because the parser sees this as local variable >> assignments, and not method calls. >> I don't know an easy way to remove that. >> > > If they're ivars (attr_accessible), then just use the ivar itself. If they > are methods on the class, then you'll need the self for there reason you > mentioned: > > def initialize(attributes = nil) > > super # If exact signature, don't need arguments > > @step = 0 > > @national_debt = 0 > > @sum_of_income = 0 > > @sum_of_taxes = 0 > > @sum_of_happiness = 0 > > @sum_of_investments = 0 > end Only if you assume that the setter methods only set the ivar. If there's extra logic in the setter method, to call it you need the self. Jesus.
From: Intransition on 16 Jun 2010 07:52
On Jun 16, 5:31 am, Ralph Shnelvar <ral...(a)dos32.com> wrote: > Consider > > > def initialize(attributes = nil) > > > > super attributes > > > > self.step = 0 > step.=(0) But do you really want to do that? The setters don't bother me so much. And I actually like seeing the self sometimes b/c it gets highlighted by my editor. Aside however, I really hate having to type 'self.class', I'd much prefer Ruby add an alias #object_class along the lines of #object_id. |