From: Carlos <angus@...>
Date: 2006-11-14T19:48:15+09:00
Subject: Re: capitalize bug?

spooq wrote:

> foo = "do_it_now"
> foo.gsub(/_+(.)/, $1.upcase)
> => "doNtNow"

Inside the block...

> 
> On 11/14/06, Carlos <angus@quovadis.com.ar> wrote:
> 
>> Jean-pierre Riviere wrote:
>> > Hi!
>> >
>> > I'm a new member here, though I use and enjoy ruby for about three
>> > years. There's a beginning to everyuthing, including thing not doing 
>> the
>> > way you think they should, even in ruby!
>> >
>> > So here's my problem:
>> >
>> > @nom = wnom.gsub(/_+(.)/, '\1'.upcase)
>>
>> The parameters to gsub are: 1. a regex, 2. the result of '\1'.upcase
>> (that is, '\1').
>>
>> > What this code should do is taking the string wnom, and removing 
>> every _
>> > and at the same time capitalizing the letter immediatly after.
>> >
>> > for instance do_it_now would become doItNow. One way to translate ruby
>> > usage into camel case.
>> >
>> > but this code does in fact producte doitnow instead of doItNow.
>> >
>> > Now, I am not blocked, because I have achieved my goal with this code:
>> >
>> > nom = wnom.gsub(/_+(.)/) { |deb| deb[1, 1].upcase }
>>
>> If you want to substitute the substring with the result of applying a
>> function to it, your only choice is to use the block parameter to gsub,
>> yes. (Did the previous sentence parse?) Another possibility is to use
>> $1.upcase.
>>
>> HTH
>> -- 
>>
>>
>>
> 
>