From: Mihaly Zachar (zmihaly_at_[hidden])
Date: 2008-04-10 11:51:21
John Maddock wrote:
> Mihaly Zachar wrote:
>
>> unfortunately this is a real problem...
>> I'm interworking with an existing perl system and it provides me rexes
>> what I sohuld use.
>>
>> We should have the same result for the same regexes.
>>
>> mitya_at_stamford:~$ perl -e '$in = "1111"; $in =~ s/(.*)/0$1/; print
>> $in."\n"' 01111
>> mitya_at_stamford:~$
>>
>> to set match_not_null is not good for me :(
>>
>
> OK so the Perl code doesn't set the /g modifier so it only replaces the
> first match found: you can get the same behaviour in Boost.Regex by passing
> the format_first_only flag as the last argument to regex_replace.
>
> In other words the defaults are different: Boost.Regex defaults to "replace
> all occurences" but you can choose to replace just the first one if you
> want, and Perl is the other way around.
>
great, I know why does it work in this way !!!
thanks very much for for you and Stephen Nuchia too
Regards,
Misi