From: Julian Leviston <julian@...>
Date: 2011-08-10T09:31:55+09:00
Subject: Re: *WHY* does this not work?

c represents a temporary variable with a copy of the char in it. This is always the case. Use the map and join methods if you want to construct a new string in that manner, and then set the variable pointing to the old string to the new string. 


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On 10/08/2011, at 4:52 AM, serialhex <serialhex@gmail.com> wrote:

> ok, so code:
> 
> str = 'foo'
> => "foo"
> str.each_char do |c|
>  c = 'x'
> end
> => "foo"
> 
> WHY does str == 'foo' still?? i would expect it to be 'xxx'!  this makes no
> sense, and is *QUITE* annoying...  i end up having to do things like this:
> 
> ... i CAN'T do things like that for a string because it dsn't seem to do
> that, but for an array i'd have to:
> 
> ary = ['f', 'o', 'o']
> => ["f", "o", "o"]
> ary.each_index do |i|
>  ary[i] = 'x'
> end
> => ["x", "x", "x"]
> 
> GAH!!! least surprise??  least surprise my FOOT!!!  even if there was a
> *.each! method to do that i would be fine, *that* would be ok, none of this
> 'get the index and then do what you need to do and *THEN* set the stupid
> block variable.... GRRRRRR!!!!
> 
> /vent
> hex
> 
> -- 
> my blog is cooler than yours: serialhex.github.com
> 
> The wise man said: "Never argue with an idiot. They bring you down to their
> level and beat you with experience."
> 
>>> Other than the fact Linux has a cool name, could someone explain why I
>>> should use Linux over BSD?
>> 
>> No.  That's it.  The cool name, that is.  We worked very hard on
>> creating a name that would appeal to the majority of people, and it
>> certainly paid off: thousands of people are using linux just to be able
>> to say "OS/2? Hah.  I've got Linux.  What a cool name".  386BSD made the
>> mistake of putting a lot of numbers and weird abbreviations into the
>> name, and is scaring away a lot of people just because it sounds too
>> technical.
>    -- Linus Torvalds' follow-up to a question about Linux