Is there a way to remove ALL leading the trailing spaces in a string please? For example, '' hello'' => ''hello'' '' hello '' => ''hello'' '' hello '' => ''hello'' Thanks in advance Grace -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Try strip or strip! Good luck, -Conrad On 8/20/07, Grace Xue <rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> > > Is there a way to remove ALL leading the trailing spaces in a string > please? > > For example, > '' hello'' => ''hello'' > '' hello '' => ''hello'' > '' hello '' => ''hello'' > > Thanks in advance > > Grace > -- > Posted via http://www.ruby-forum.com/. > > > >--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Take a look here: http://www.ruby-doc.org/core/ More specifically: http://www.ruby-doc.org/core/classes/String.html#M000842 It''s strip method On 8/20/07, Grace Xue <rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> > > Is there a way to remove ALL leading the trailing spaces in a string > please? > > For example, > '' hello'' => ''hello'' > '' hello '' => ''hello'' > '' hello '' => ''hello'' > > Thanks in advance > > Grace > -- > Posted via http://www.ruby-forum.com/. > > > >--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Thanks Luis -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
> Try strip or strip!Apart from the return variable can be a nil object for strip! Is there any other difference between the two at all? What would be the senario that you''d use strip! please? Thanks Grace -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
> What would be the senario that you''d use strip! please?Depends what effect you want to see: the ! version operates on the String object itself, the other returns a new String as the result of the strip operation: s = '' xyz '' s2 = s.strip s => '' xyz '' # s is unchanged s2 => ''xyz'' s.strip! s => ''xyz'' # s changes --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
strip returns its result, strip! modifies it''s caller directly Grace Xue wrote:>> Try strip or strip! >> > > Apart from the return variable can be a nil object for strip! Is there > any other difference between the two at all? > > What would be the senario that you''d use strip! please? > > Thanks > > Grace > > >-- Sincerely, William Pratt http://www.billpratt.net billp-YbheRAKfYF4eIZ0/mPfg9Q@public.gmane.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Mike wrote:> s = '' xyz ''> s2 = s.strip > s => '' xyz '' # s is unchanged > s2 => ''xyz'' > > s.strip! > s => ''xyz'' # s changesIf my s = ''xyz'' in the first place, would s.srip! cause any problem, as the documentation seems to suggest that s.strip! in this case will return NIL? Thanks Grace -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Grace Xue wrote:> Mike wrote: > > >> s = '' xyz '' >> > > >> s2 = s.strip >> s => '' xyz '' # s is unchanged >> s2 => ''xyz'' >> >> s.strip! >> s => ''xyz'' # s changes >> > > If my s = ''xyz'' in the first place, would s.srip! cause any problem, as > the documentation seems to suggest that s.strip! in this case will > return NIL? >Hi Grace, You are right! s.strip! will *return* nil. So, if you do t = s.strip! then t will be nil as you pointed out. s will still be valid. Cheers, Mohit. 8/22/2007 | 11:42 AM. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---