awesome, it works! It's all starting to make some sense now.

Thanks!

baptiste

On 29 Jun 2007, at 19:58, Axel Etzold wrote:

>>> interesting_text.delete_if{|line|  /(r|R)uby/.match==nil}
>>>
>>> removes all lines that don't contain the string Ruby or ruby,
>>
>> for some reason this doesn't work for me. I get an error message:
>> ArgumentError: wrong number of arguments (0 for 1)
>>
>>
>> if i replace this argument with something based on line numbers
>> rather than regexp, it's fine. Is the Regexp wrong?
>
> You're right. The line should read:
>
> interesting_text.delete_if{|line|  /(r|R)uby/.match(line)==nil}
>
>>
>>
>>>
>>>> and change a value
>>> old_value=1.2
>>> new_value=2.4
>>>
>>> interesting_text.sub!(old_value.to_s,new_value.to_s)
>>>
>>
>> I can't get that to work either :
>> NoMethodError: private method `sub!' called for #<Array:0x7d180>
>>
> .. and again .. sub, gsub, sub!,gsub! are for Strings ... so
> either:
>
> interesting_text=IO.readlines(file_name).to_s
> interesting_text.sub!(old_value.to_s,new_value.to_s)
>
> or , if, each line is to be processed separately,
>
> interesting_text=IO.readlines(file_name)
>
> new_text=interesting_text.each{|line|
> line.sub(old_value.to_s,new_value.to_s)}
>
> Sorry for the confusion.
>
> Best regards,
>
> Axel
>>
>>
>>>
>>>
>>> Best regards,
>>>
>>> Axel
>>
>>
>> The rest works fine, thanks again!
>>
>> baptiste
>>
>>
>
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>