Keep only one part of a string

ruby-talk
1

Hello, how to better write that : self.ident = self.ident[/0-9*/]

I'm pretty sure there is a String method that would keep only the first match of the regex but I didn't found it in the String doc reference

Thanks

2

Zouplaz wrote:

Hello, how to better write that : self.ident = self.ident[/0-9*/]

I'm pretty sure there is a String method that would keep only the first
match of the regex but I didn't found it in the String doc reference

ri String#slice, ri String#slice!

···

Thanks

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

3

Fine ! Thanks... About the same topic (Strings) I wonder how to replace
"REF:90 REFERAL".gsub!('REF:','')
by something else

I tried with .delete but

"REF:90 REFERAL".delete!("REF:") delete every R, E or F char in the string

How to use delete ?

Thanks in advance

···

le 15/09/2006 01:43, Eero Saynatkari nous a dit:

Zouplaz wrote:

Hello, how to better write that : self.ident = self.ident[/0-9*/]

I'm pretty sure there is a String method that would keep only the first
match of the regex but I didn't found it in the String doc reference

ri String#slice, ri String#slice!

Thanks

4

Zouplaz wrote:

Zouplaz wrote:

Hello, how to better write that : self.ident = self.ident[/0-9*/]

I'm pretty sure there is a String method that would keep only the first
match of the regex but I didn't found it in the String doc reference

ri String#slice, ri String#slice!

Thanks

Fine ! Thanks... About the same topic (Strings) I wonder how to replace
"REF:90 REFERAL".gsub!('REF:','')
by something else

What something else? Please say specifically what you want to accomplish.
Post an example string before you apply your desired remedy, and after.

I tried with .delete but

"REF:90 REFERAL".delete!("REF:") delete every R, E or F char in the string

How to use delete ?

You are asking how to apply a particular solution, but without first stating
a problem. Maybe the problem is better solved using a different method.

···

le 15/09/2006 01:43, Eero Saynatkari nous a dit:

--
Paul Lutus
http://www.arachnoid.com

5

Sorry, what I would like to know is if there is a another String method to delete a part of a string instead of gsub

In the string "REF:90 REFERAL"

I want REF: to be deleted but not the REF or REFERAL

I've tried with the .delete method but each R, E F : char was deleted in the string

···

le 15/09/2006 12:01, Paul Lutus nous a dit:

Zouplaz wrote:

le 15/09/2006 01:43, Eero Saynatkari nous a dit:

Zouplaz wrote:

Hello, how to better write that : self.ident = self.ident[/0-9*/]

I'm pretty sure there is a String method that would keep only the first
match of the regex but I didn't found it in the String doc reference

ri String#slice, ri String#slice!

Thanks

Fine ! Thanks... About the same topic (Strings) I wonder how to replace
"REF:90 REFERAL".gsub!('REF:','')
by something else

What something else? Please say specifically what you want to accomplish.
Post an example string before you apply your desired remedy, and after.

6

Zouplaz wrote:

Sorry, what I would like to know is if there is a another String method
  to delete a part of a string instead of gsub

In the string "REF:90 REFERAL"

I want REF: to be deleted but not the REF or REFERAL

I've tried with the .delete method but each R, E F : char was deleted in
the string

You want String#slice!

s = 'REF:90 REFERAL'
s.slice!('REF:') # => "REF:"
s # => "90 REFERAL"

Check out the core documentation for the String class:
http://ruby-doc.org/core/classes/String.html

Regards,
Jordan

7

s = "REF:90 REFERAL"
s.slice!("REF:")
s #=> "90 REFERAL"

···

On Fri, Sep 15, 2006 at 07:10:52PM +0900, Zouplaz wrote:

le 15/09/2006 12:01, Paul Lutus nous a dit:
>Zouplaz wrote:
>
>>le 15/09/2006 01:43, Eero Saynatkari nous a dit:
>>>Zouplaz wrote:
>>>>Hello, how to better write that : self.ident = self.ident[/0-9*/]
>>>>
>>>>I'm pretty sure there is a String method that would keep only the first
>>>>match of the regex but I didn't found it in the String doc reference
>>>ri String#slice, ri String#slice!
>>>
>>>>Thanks
>>>
>>Fine ! Thanks... About the same topic (Strings) I wonder how to replace
>>"REF:90 REFERAL".gsub!('REF:','')
>>by something else
>
>What something else? Please say specifically what you want to accomplish.
>Post an example string before you apply your desired remedy, and after.
>

Sorry, what I would like to know is if there is a another String method
to delete a part of a string instead of gsub

In the string "REF:90 REFERAL"

I want REF: to be deleted but not the REF or REFERAL

I've tried with the .delete method but each R, E F : char was deleted in
the string