Re: string manipulations with regular expressions

thnx a lot for the replies!

I realize that indeed the quote() function is what I should use!

But still, I'm very interested in my regular expression problem!
I see that monarch solution works great.!However I remember that using variables like $1, $2 will not really improve performance (I'm talking about many of thousands of insertes...... and I like one-liners :)
Is there no way we can fix what I've tried so far ?

LuCa

Comment on Re: string manipulations with regular expressions

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Re^2: string manipulations with regular expressions by wfsp (Abbot) on Oct 17, 2006 at 10:10 UTC
...using variables like $1, $2 will not really improve performance... No the capture vars ($1, $2 etc.) aren't the culprits. From perlretut: If you use them, perl will set $` to the part of the string before the match, will set $& to the part of the string that matched, and will set $' to the part of the string after the match. ... It is important to note that using $` and $' slows down regexp matching quite a bit, and $& slows it down to a lesser extent... So $1 and friends won't effect performance.	[reply]
Re^2: string manipulations with regular expressions by monarch (Priest) on Oct 17, 2006 at 10:20 UTC
Try this: `$values = "'abc', 'dec'f', ''ghc''" ; $values =~ s/ (?<!\A) # no beginning-of-string in front (?<!,\s) # no comma and space in front \' # quote (?!,\s\|\z) # no command and space or end-of-string ahead / \\\' # replace with \' /xg;` [download] It results in: `'abc', 'dec\'f', '\'ghc\''` [download] I don't believe it is possible to remove the commas between words at the same time as quoting the strings.	[reply] [d/l] [select]