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Re^2: Removing digits from a string

by erix (Vicar)
on Jan 01, 2013 at 10:56 UTC ( #1011138=note: print w/ replies, xml ) Need Help??


in reply to Re: Removing digits from a string
in thread Removing digits from a string

s/^\d+// # 'first few digits'


Comment on Re^2: Removing digits from a string
Re^3: Removing digits from a string
by Anonymous Monk on Jan 01, 2013 at 11:02 UTC
    s/^\D*\d+// # 'first few digits'

      That's likely not the right interpretation of his use of 'truncate', which suggests outer positions, no? But I guess the OP should be able to 'figure' it out ;-)

        That's likely not the right interpretation of his use of 'truncate', which suggests outer positions, no? But I guess the OP should be able to 'figure' it out ;-)

        I kinda doubt the op knows what truncate means, or that the OP would know how to apply any of the answers :)

      s/^\D*\d+// # 'first few digits'

      Even if this interpretation is correct (and I agree with erix that it’s unlikely), there is no warrant in the OP to remove the non-digit prefix. So the regex would need to be: s/^(\D*)\d+/$1/. For example:

      23:21 >perl -wE "$f = 'xyz20130101Customer100.imp'; $f =~ s/^(\D*)\d+/ +$1/; say $f;" xyzCustomer100.imp 23:22 >

      Update (2nd January, 2013):

      Thank-you Anonymous Monk for the improvement below using \K: shorter and “much more efficient”, according to perlre. I’ve learned something useful!

      Hope that helps,

      Athanasius <°(((><contra mundum Iustus alius egestas vitae, eros Piratica,

        s/^\D*\K\d+//;

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