CODEWITHSUNDEEP
rubystring
user1977840
user1977840

Reputation:

Ruby Replacing Parts of String

I have this String

s = "03:23 PM on 09/04/12"

I want to take out the ' on ' and replace it with just a space ' '. I thought the string's gsub method, along with regex, would be the best solution. I am just not sure why this wont work.

s ="03:23 PM on 09/04/12"
s.gsub(/ on /, ' ')
puts s
#=> "03:23 PM on 09/04/12"

Upvotes: 0

Views: 280

Answers (4)

Borodin
Borodin

Reputation: 126722

A string's gsub method returns the modified string and leaves the object string alone. If you want to modify the object in-place then you have to use gsub!.

Also, if you want to change only one occurrence then sub is probably your best bet.

So

s = "03:23 PM on 09/04/12"

s = s.sub(' on ', ' ')

or

s.sub!(' on', ' ')

Upvotes: 3

Arup Rakshit
Arup Rakshit

Reputation: 118261

s ="03:23 PM on 09/04/12"
s.gsub(' on ', ' ')
#>> "03:23 PM 09/04/12"

You can go without regex in this case,but if you want to use regex,then use s.gsub!(/ on /, ' ')

Upvotes: 0

ddavison
ddavison

Reputation: 29032

You are not required to use a Regexp object for the gsub parameter (/ on /) you can also use a string - this worked for me!

s = "03:23 PM on 09/04/12"

p s.gsub " on ", " "
#=> "03:23 PM 09/04/12"

Upvotes: 2

Denis de Bernardy
Denis de Bernardy

Reputation: 78413

works fine for me... Perhaps you meant to use gsub!?

>> s ="03:23 PM on 09/04/12"
=> "03:23 PM on 09/04/12"
>> s.gsub(/ on /, ' ')
=> "03:23 PM 09/04/12"
>> s.gsub!(/ on /, ' ')
=> "03:23 PM 09/04/12"
>> s
=> "03:23 PM 09/04/12"

Upvotes: 2

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