searching an array

[Ralph Smith]

I have an array of classes source[]

I can sort it like this
source.sort! { |x,y| x.fname <=> y.fname }

If I print it out it is sorted by 'fname'.

Now I would like to search it for different fnames but can't find an example of how to do that.
Can someone tell me how?

thanks,
Ralph

[Robert Klemme]

2005/10/25, Ralph Smith <ra...@lkjlkj.com>:

source.find {|x| x.fname == "foo"}
source.select {|x| x.fname == "foo"}

HTH

robert

[Bill Mustard]

I like grep eg.

results = source.grep(/.txt/)

returns a list (array) of entries that contain '.txt'. (including
things like fred.txt.bak)

Array mixes in (includes) the methods in Enumerable which is where much
of this magic is hiding.

Bill

[Robert Klemme]

Bill Mustard <bi...@jrl.org> wrote:
> Ralph Smith wrote:
>> I have an array of classes source[]
>>
>> I can sort it like this
>> source.sort! { |x,y| x.fname <=> y.fname }
>>
>> If I print it out it is sorted by 'fname'.
>>
>> Now I would like to search it for different fnames but can't find an
>> example of how to do that. Can someone tell me how?
>>
>> thanks,
>> Ralph
>>
>>
>
> I like grep eg.
>
> results = source.grep(/.txt/)
>
> returns a list (array) of entries that contain '.txt'. (including
> things like fred.txt.bak)

Unlikely that it works in this case as Ralf seems to have instances of a
custom class in the array. If you want to make grep work with that you'd
need to either implement #to_str for this custom class (which I'd find
inappropriate) or do this

condition = lambda {|x| x.fname == "foo"}
class<<condition
alias === []
end
source.grep condition

:-)

> Array mixes in (includes) the methods in Enumerable which is where
> much of this magic is hiding.

Yes, among them #inj... Ok, I'll keep my mouth shut.

Kind regards

robert