hemant
1/23/2007 8:18:00 PM
On Wed, 2007-01-24 at 05:03 +0900, AliasX Neo wrote:
> I have been looking into what exactly a Ruby symbol is and have gotten
> some decent info on how they work. I have only one question, how are
> they used in functions like in Rails? I see Rails function like:
>
> func("string", :symbol => "string")
>
> How is the combination of the symbol and the string being used inside
> the function? Is this some kind of convention?
>
> I don't want to start another war on what symbols are for, I just want a
> little clarification on how they are used in the context I provided
> above. Thanks.
AFAIK you are passing a string and a Hash as an argument to the above
method.
So implementation would look like:
def func(text,option_hash)
# text contains the string
# option_hash is the hash as usual.
p option_hash[:symbol] #=> "string"
end
Using symbols as Hash keys is convention for sure.