Local variables and functions

ruby-talk
1

Hi!

I got one question. While I was coding a method earlier today, and that method had lots of local variables, I was thinking:

"What happens when I introduce a new method sometime in the future, while adding features to my program? That may lead to name clashes"

For example, lets say I use the local variable "ids" in a method - as soon as I introduce a method called ids into the class, or a mixin of that class - whatever - the program breaks! And it's not easy to avoid that..

Am I missing something here?

Thanks :slight_smile:

Rob

PS: btw I'm getting some spam to my brand new email address (this one I'm using) - I searched the web for my email address and an archive of this Ruby mailing list -- shouldn't that be avoided? Posting emails on the web I mean --- it's not a big problem though, as this email is not very important. Just curious

2

Nevermind -- I forgot local variables have precedence over method calls -- if I understood it correctly

Cheers,
R

3

Your local variables always hide methods with the same name. In order
to call a method instead of accessing a variable you should provide
some hints to Ruby like use parentheses () or access a method
explicitly through self.method_name.

Kent.

···

On 5/30/05, Robert Mannl <ro@cayoparaiso.com> wrote:

Hi!

I got one question. While I was coding a method earlier today, and that
method had lots of local variables, I was thinking:

"What happens when I introduce a new method sometime in the future,
while adding features to my program? That may lead to name clashes"

For example, lets say I use the local variable "ids" in a method - as
soon as I introduce a method called ids into the class, or a mixin of
that class - whatever - the program breaks! And it's not easy to avoid
that..

Am I missing something here?

Thanks :slight_smile:

Rob

PS: btw I'm getting some spam to my brand new email address (this one
I'm using) - I searched the web for my email address and an archive of
this Ruby mailing list -- shouldn't that be avoided? Posting emails on
the web I mean --- it's not a big problem though, as this email is not
very important. Just curious

4

Last I checked that won't help in Ruby 1.9 - local variables
always hide methods of the same name, even with the (). But,
that change (callable objects) may be reverted.

···

--- Kent Sibilev <ksruby@gmail.com> wrote:

Your local variables always hide methods with the same name.
In order
to call a method instead of accessing a variable you should
provide
some hints to Ruby like use parentheses () or access a method
explicitly through self.method_name.

Kent.

On 5/30/05, Robert Mannl <ro@cayoparaiso.com> wrote:
> Hi!
>
> I got one question. While I was coding a method earlier
today, and that
> method had lots of local variables, I was thinking:
>
> "What happens when I introduce a new method sometime in the
future,
> while adding features to my program? That may lead to name
clashes"
>
> For example, lets say I use the local variable "ids" in a
method - as
> soon as I introduce a method called ids into the class, or
a mixin of
> that class - whatever - the program breaks! And it's not
easy to avoid
> that..
>
> Am I missing something here?
>
> Thanks :slight_smile:
>
>
> Rob
>
> PS: btw I'm getting some spam to my brand new email address
(this one
> I'm using) - I searched the web for my email address and an
archive of
> this Ruby mailing list -- shouldn't that be avoided?
Posting emails on
> the web I mean --- it's not a big problem though, as this
email is not
> very important. Just curious
>
>

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