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Re: Split using special charater data type scalar

by jwkrahn (Monsignor)
on Mar 25, 2013 at 18:42 UTC ( #1025362=note: print w/replies, xml ) Need Help??


in reply to Split using special charater data type scalar

$text =~ s/[\s|\n]*//g;

If we expand the \s (whitespace) character class we get:

$text =~ s/[ \t\n\r\f|\n]*//g;

So why are you including the \n (newline) character twice?    And why are you including the | (vertical bar) character, which has nothing to do with whitespace?    And matching zero characters is inefficient.    What you probably want is:

$text =~ s/\s+//g;


$text =~ s/^[---]+//;

A character class ignores multiple identical characters so what you effectively have is:

$text =~ s/^[-]+//;

Which could be written more simply without the character class:

$text =~ s/^-+//;

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[abner]: what if i want SELECT * FROM charge WHERE col1 = x and col2 = y?
[atcroft]: abner: So you are wanting to do something like my $sth = $dbh->prepare(' SELECT * FROM charge WHERE col1 = ? and col2 = ?;'); $sth->execute(' asdf', 'asdw');?
[atcroft]: (Full disclosure: I may have the idea right but small typographical errors, so please test any code I suggest. :) )

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