From: Jeff Pritchard <jp@...>
Date: 2006-06-01T13:13:03+09:00
Subject: Re: Parsing a string using multiple regexs

Thanks Ezra,
I was sure I would learn something by attempting an answer.  I learned 
several somethings:

tags << next answer
(cleaner than using subscripts)

input.gsub!(/\"(.*?)\"\s*/ ) { tags << $1; "" }
(remove the stuff you find as you find it - brilliant!)

/\"(.*?)\"\s*/
(don't forget to escape the quotes and use ? to make .* less greedy)

# replace all commas with a space
(if you can't get there from here, go someplace else first!)

tags.concat input.split(/\s/)
(another cool way to shove some more answers into the answer array)

# strip whitespace from the names
>      tags.map! { |t| t.strip }
(instead of making the regexp more complicated, do it simply and then
clean up the results)

# delete any blank tag names
>      tags = tags.delete_if { |t| t.empty? }
(yet another iterator I never heard of before)


 def parse_tags(input)
 ...
end
(modularize everything as you go!)


P.S. Ezra, thanks for recommending RimuHosting, they've been great!

best,
jp


Ezra Zygmuntowicz wrote:
> On May 31, 2006, at 4:06 PM, web mail wrote:
> 
>>
>> I desperately need help. Anyone ?
>>
>> Thanks,
>>
>> Jason
>>
>> -- 
>> Posted via http://www.ruby-forum.com/.
>>
> 
> 
>    def parse_tags(input)
>      tags = []
>      # pull out the quoted tags
>      input.gsub!(/\"(.*?)\"\s*/ ) { tags << $1; "" }
>      # replace all commas with a space
>      input.gsub!(/,/, " ")
>      # get whatever's left
>      tags.concat input.split(/\s/)
>      # strip whitespace from the names
>      tags.map! { |t| t.strip }
>      # delete any blank tag names
>      tags = tags.delete_if { |t| t.empty? }
>      return tags
>    end
> 
> 
> -Ezra


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