Re: finding the last occurence of substring in string

The position of the (first of) last 2 non-? bytes that are followed exclusively by ?s to the end of the string:

$s =~ m[([^?]{2})[?]+$] and print $-[0];;
8
[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.

Comment on Re: finding the last occurence of substring in string Download Code

Replies are listed 'Best First'.
Re^2: finding the last occurence of substring in string by gri6507 (Deacon) on Jul 26, 2012 at 16:28 UTC
Thanks, the match operator gets me what I was looking for. But your post brings up another question. What is the meaning of `$-[0]` ?	[reply] [d/l]
Re^3: finding the last occurence of substring in string by BrowserUk (Patriarch) on Jul 26, 2012 at 16:40 UTC
What is the meaning of $-[0] ? See the definition of `@LAST_MATCH_START` in perlvar. `$-[0]` is the value of the first element of `@-`. Which, after a successful match, contains the position in the string at which the capturing parens matched. 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. The start of some sanity?	[reply] [d/l] [select]