Not sure your parameters. Do you mean all pairs of numerically consecutive digits? Or just adjacent digits? Does the string contain alphabetics? Although everyone loves to show off their regex foo, not all solutions require a regex. Perhaps this: 

my $s = "abc12341xyz";
my @pairs = grep /\d\d/, map { substr $s, $_, 2 } (0..length($s)-2);
print join " ", @pairs;

12 23 34 41

[download]

s//----->\t/;$~="JAPH";s//\r<$~~/;{s|~$~-|-~$~|||s |-$~~|$~~-|||s,<$~~,<~$~,,s,~$~>,$~~>,, $|=1,select$,,$,,$,,1e-1;print;redo}

In reply to Re: Global regexp by starbolin
in thread Global regexp by Anonymous Monk

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