From: Eric Hodel <drbrain@...7.net>
Date: 2006-09-29T17:29:05+09:00
Subject: Re: "" vs ''

On Sep 25, 2006, at 12:09 PM, Rich Morin wrote:
> At 3:10 AM +0900 9/26/06, James Edward Gray II wrote:
>> On Sep 25, 2006, at 12:03 PM, Rich Morin wrote:
>>
>>> Use '' by default:
>>>
>>>   -  It's less work for the interpreter.
>>
>> What makes you say this?
>
> If the interpreter sees a single-quoted string, it knows
> that it doesn't need to scan the string for things (such
> as escape sequences) to expand.  I agree that this effect
> will be lost in the noise, in most cases, but why make the
> interpreter do extra work?

Incorrect.  For identical string contents the interpreter does the  
same amount of work.  The parser may do less work, but you only parse  
once.

$ parse_tree_show -f
["foo", 'foo', "#{foo}", '#{foo}']
[[:array,
   [:str, "foo"],
   [:str, "foo"],
   [:dstr, "", [:vcall, :foo]],
   [:str, "\#{foo}"]]]

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net
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