Need help with gsub a string

ruby-talk
1

Lacking in regular expressions knowledge, I am having difficulty
replacing the string as shown:

"(linux) alpha/beta"

Essentially, there may be spaces such as:

" ( linux)alpha / beta" or maybe "(linux) alpha / beta"

What I am trying to replace that whole string with is just the last word
after the / so my string will just be "beta".

···

--
Posted via http://www.ruby-forum.com/.

2

something like this?

ruby-1.9.2-p290 :016 > s = "(linux) alpha / beta"
=> "(linux) alpha / beta"
ruby-1.9.2-p290 :017 > s.slice(s.index("/")+1,s.length).strip
=> "beta"

···

On Wed, Nov 23, 2011 at 12:13 PM, skolo pen <skolopen@yahoo.com> wrote:

Lacking in regular expressions knowledge, I am having difficulty
replacing the string as shown:

"(linux) alpha/beta"

Essentially, there may be spaces such as:

" ( linux)alpha / beta" or maybe "(linux) alpha / beta"

What I am trying to replace that whole string with is just the last word
after the / so my string will just be "beta".

--
Posted via http://www.ruby-forum.com/\.

3

This works very nice. I'm see new methods I can read up on. Thank you
for the assist.

···

--
Posted via http://www.ruby-forum.com/.

4

this is simpler...

ruby-1.9.2-p290 :023 > s = "(linux) alpha / beta"
=> "(linux) alpha / beta"
ruby-1.9.2-p290 :024 > s.split("/")[1].strip
=> "beta"

···

On Wed, Nov 23, 2011 at 12:23 PM, Ian M. Asaff <ian.asaff@gmail.com> wrote:

something like this?

ruby-1.9.2-p290 :016 > s = "(linux) alpha / beta"
=> "(linux) alpha / beta"
ruby-1.9.2-p290 :017 > s.slice(s.index("/")+1,s.length).strip
=> "beta"

On Wed, Nov 23, 2011 at 12:13 PM, skolo pen <skolopen@yahoo.com> wrote:

> Lacking in regular expressions knowledge, I am having difficulty
> replacing the string as shown:
>
> "(linux) alpha/beta"
>
> Essentially, there may be spaces such as:
>
> " ( linux)alpha / beta" or maybe "(linux) alpha / beta"
>
> What I am trying to replace that whole string with is just the last word
> after the / so my string will just be "beta".
>
> --
> Posted via http://www.ruby-forum.com/\.
>
>

5

If you are regexically-inclined:

"(linux) alpha / beta"[/(?<=\/).+$/] #=> " beta"

If only there were variable-length look-aheads, then it could be (?<=\/ ?),
for what I assume is a possible case of "alpha/beta".

(I don't recommend doing it this way, necessarily, just throwing it out
there.)

6

this is simpler...

ruby-1.9.2-p290 :023 > s = "(linux) alpha / beta"
=> "(linux) alpha / beta"
ruby-1.9.2-p290 :024 > s.split("/")[1].strip
=> "beta"

Or on the off chance there might be additional slashes in there --

s.split('/').last.strip

Alternately:

s.scan(/(\w+)\Z/).first.first

TMTOWTDI!

···

On Wed, Nov 23, 2011 at 9:28 AM, Ian M. Asaff <ian.asaff@gmail.com> wrote:
--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com

twitter: @hassan

7

File.basename(s).strip

···

On Nov 23, 2011, at 10:14, Hassan Schroeder <hassan.schroeder@gmail.com> wrote:

Or on the off chance there might be additional slashes in there --

s.split('/').last.strip