Re: "negative" regexp

"PV" == Petr Vileta <stoupa@xxxxxxxxxxxxx> writes:

PV> Tad J McClellan wrote:
>> Petr Vileta <stoupa@xxxxxxxxxxxxx> wrote:
>>
>>
>>> $html=~s/<\!\-\-.+?\-\->//sig;
>>
>>
>> Unnecessary backslashes make your code much harder to read
>> and understand. You should backslash only when you actually
>> need to.
>>
>> There is not much point in ignoring case when your pattern
>> does not contain any letters...
>>
>>
>> $html =~ s/<!--.+?-->//sg;
PV> Yes, you are right, but O'Reilly book "Programin Perl" say "... any
PV> other escaped character is character itself". Maybe this is not
PV> correct cite, I have Czech version. In other word the character - is
PV> sometime "range operator" say in case [a-z] and character ! sometime
PV> mean "not". So for to be sure a character is a character but not
PV> operator I'm used to escape all possible ambiguous characters ;-)

that is chicken programming. it leads to noise and potentially buggy
programs. i wouldn't accept it for any production code or code that i
review.

uri

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Relevant Pages

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