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How do you list all the drives in your computer and 2 optional regex questions.
I mainly cares about this question:
How do you list all the drives (i.e. C:) that exists on your HD and
their respective status (i.e. Available/not available)?
I seen these two regular expressions somewhere, and I was just wondering if anyone knew what they meant?
A-Z^;
#==> what does that ^ mean at the end?
s{A}|B|;
#==> What does the || mean?
PS: I am running out of points, sorry about that.
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by: harris_cPosted on 2003-09-27 at 07:10:07ID: 9442238
How do you list all the drives (i.e. C:) that exists on your HD and
their respective status (i.e. Available/not available)?
====> http://swexpert.com/C5/SE.
The "^" and "$" characters are used for anchoring searches. The "^" means the start of the line and "$" means the end.
IE, $mySTR = "AlphaBetaGamma";
/^Alpha/
/Gamma$/
But if it is used inside a character set "[]" then the "^" mean negate.
$mySTR = "abcde";
/([^a]/ --> will match b,c,d,e but not a.
I seen these two regular expressions somewhere, and I was just wondering if anyone knew what they meant?
A-Z^; what does that ^ mean at the end?
====> If it is used like this [A-Z^], then it is the same as [A-Z|] OR [A-Z^0-9] = [A-Z|0-9]
s{A}|B|; What does the || mean?
====> Means match "s{A}" or "B" or NIL/NULL.
A|B|C --> this means match "A" or "B" or "C", so the "|" mean OR
hec",)