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Re^2: Regular expression

by dsb (Chaplain)
on Dec 09, 2005 at 18:39 UTC ( #515620=note: print w/ replies, xml ) Need Help??


in reply to Re: Regular expression
in thread Regular expression

Well, one problem is neither of your regex will match your string; the first will match strings which include 0-9 seven times in succession; the second will match seven consecutive copies of 0-9 or 0- or any combination of these; neither will match 7 random digits.
I'm not sure why you are saying that, but the OP's first pattern WILL match 7 random digits. The second will also match 7 random digits, but it will also match 1-6 random digits as well.

Unfortunately, the OP is a bit unclear as to whether this sequence of 7 numbers should be isolated or part of a larger string.


dsb
This @ISA my( $cool ) %SIG


Comment on Re^2: Regular expression
Re^3: Regular expression
by swampyankee (Parson) on Dec 09, 2005 at 22:18 UTC

    The square braces weren't there when I wrote my reply; I think g0n inserted the code tags after my comment. 0-90-9... does look a bit different from [0-9][0-9]; and I managed to get confused.

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