From: John Feminella <johnf@...>
Date: 2011-02-14T09:49:30+09:00
Subject: Re: What does %q do?

Whoops, small typo:

> %q{abc} is equivalent to writing "abc".

should read:

> %q{abc} is equivalent to writing 'abc' (single quotes).

By contrast, %Q{abc} is equivalent to writing "abc" (double quotes).
You can see the difference when you try to substitute variables:

> f = "apple"

> %q{#{f}}
 => "\#{f}"
> %Q{#{f}}
 => "apple"

~ jf
--
John Feminella
Principal Consultant, BitsBuilder
LI: http://www.linkedin.com/in/johnxf
SO: http://stackoverflow.com/users/75170/



On Sun, Feb 13, 2011 at 19:46, John Feminella <johnf@bitsbuilder.com> wrote:
> %q{abc} is equivalent to writing "abc". It's most useful when you have
> a string literal that contains a lot of characters you'd need to
> escape. Compare:
>
> "Gaba Luschi asked the ruby-talk list, \"What does %q do?\""
>
> vs.
>
> %q{Gaba Luschi asked the ruby-talk list, "What does %q do?"}
>
> And note they're equal:
>
>> a = %q{Gaba Luschi asked the ruby-talk list, "What does %q do?"}
>> b = "Gaba Luschi asked the ruby-talk list, \"What does %q do?\""
>
>> a == b
>  => true
>
> ~ jf
> --
> John Feminella
> Principal Consultant, BitsBuilder
> LI: http://www.linkedin.com/in/johnxf
> SO: http://stackoverflow.com/users/75170/
>
>
>
> On Sun, Feb 13, 2011 at 19:39, Gaba Luschi <friedoysterlover@gmail.com> wrote:
>> What does %q do in ruby?
>>
>> --
>> Posted via http://www.ruby-forum.com/.
>>
>>
>