John Joyce
6/15/2007 3:28:00 PM
On Jun 15, 2007, at 9:38 AM, Bertram Scharpf wrote:
> Hi,
>
> Am Freitag, 15. Jun 2007, 23:24:29 +0900 schrieb John Joyce:
>> On Jun 14, 2007, at 9:48 PM, Joel VanderWerf wrote:
>>> Daniel DeLorme wrote:
>>>> Colin Summers wrote:
>>>>> r = r.reverse.chop.reverse # remove the first character
>>>>>
>>
>> We could def a method that takes a string and does all of this. One
>> version could return a new string, the other could trim it in place.
>>
>> def nibble(string)
>> range_end = string.length - 1
>> string.slice(1..range_end)
>> end
>
> Obey at least some conventions.
>
> class String
> def shift
> slice! 0, 1 if any?
> end
> alias lchop shift
> end
>
> Bertram
So sweet about it. What conventions do you refer to?
I said you could add to a class, I didn't do it.
I also was just trying to keep it clear.
String#slice is not well documented in rdoc. ri only gives the
formats and result types.
----------------------------------------------------------- String#slice
str[fixnum] => fixnum or nil
str[fixnum, fixnum] => new_str or nil
str[range] => new_str or nil
str[regexp] => new_str or nil
str[regexp, fixnum] => new_str or nil
str[other_str] => new_str or nil
str.slice(fixnum) => fixnum or nil
str.slice(fixnum, fixnum) => new_str or nil
str.slice(range) => new_str or nil
str.slice(regexp) => new_str or nil
Not the most clear stuff in the world for everyone.
especially this:
str.slice(fixnum, fixnum) => new_str or nil
Uh, what should those fixnums be?
Sure we could sit around and try it in irb, but better descriptions
would be better for rdoc and for everyone.
shift is a pretty poor naming btw. Makes more sense if you are
dealing with an array. Ruby's strings are not an arrays.
You missed the OP's goal. You returned the first character.
how about:
# Takes a fixnum argument. Returns a new string by removing (or
nibbling) the 'fixnum' number of bytes from the string
class String
def nibble(fixnum)
range_end = self.length - 1
slice(fixnum..range_end)
end
end