Re^3: A regex that only matches at offset that are multiples of a given N?

in reply to Re^2: A regex that only matches at offset that are multiples of a given N?
in thread A regex that only matches at offset that are multiples of a given N?

Why have you removed the ^ anchor?

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Re^4: A regex that only matches at offset that are multiples of a given N? by BrowserUk (Patriarch) on Feb 13, 2013 at 16:36 UTC
Because with it, it only matches the first match; not any second or subsequent properly aligned matches?: `print "$-[0]: $1" while $a =~ m[(?:.{4})(?=(aa..))]g;; 0: aawx 404: aawx 405: aadz 481: aadz print "$-[0]: $1" while $a =~ m[^(?:.{4})(?=(aa..))]g;; 0: aawx print "$-[0]: $1" while $a =~ m[(?:.{4})(?=(gg..))]g;; 0: gghn 208: gghn 211: ggyj 955: ggyj print "$-[0]: $1" while $a =~ m[^(?:.{4})(?=(gg..))]g;; 0: gghn` [download] With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]

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Re^4: A regex that only matches at offset that are multiples of a given N?
by BrowserUk (Patriarch) on Feb 13, 2013 at 16:36 UTC

Because with it, it only matches the first match; not any second or subsequent properly aligned matches?:

print "$-[0]: $1" while $a =~ m[(?:.{4})*(?=(aa..))]g;;
0: aawx
404: aawx
405: aadz
481: aadz

print "$-[0]: $1" while $a =~ m[^(?:.{4})*(?=(aa..))]g;;
0: aawx

print "$-[0]: $1" while $a =~ m[(?:.{4})*(?=(gg..))]g;;
0: gghn
208: gghn
211: ggyj
955: ggyj

print "$-[0]: $1" while $a =~ m[^(?:.{4})*(?=(gg..))]g;;
0: gghn
[download]

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

[reply]
[d/l]

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