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Re^5: Efficient way to replace a set of values with another set of values

by AnomalousMonk (Canon)
on Nov 23, 2012 at 22:58 UTC ( #1005323=note: print w/replies, xml ) Need Help??


in reply to Re^4: Efficient way to replace a set of values with another set of values
in thread Efficient way to replace a set of values with another set of values

... until you get to "27. This is a really long list!".

Maybe something like (and 'zz' could easily be 'zzz'):

>perl -wMstrict -e "my @lines = ( '1. This is just a sample.', '2. This is to check', '3. How a set of values', '4. can be replaced by another', '5. set of values and that too', '6. in the most efficient way.', '99. And also handle large numbers.', '999. Oops, too big!', '99 bottles of beer on the wall does not translate!', ); ;; my %xlate; { my @alphas = (undef, 'a' .. 'zz'); @xlate{ 1 .. $#alphas } = @alphas[ 1 .. $#alphas ]; } ;; s{ \A (\d+) (?= [.]) } { exists $xlate{$1} ? $xlate{$1} : (warn(qq{bad '$1' in '$_'}), '??') }xmse for @lines; ;; print qq{$_\n} for @lines; " bad '999' in '999. Oops, too big!' at -e line 1. a. This is just a sample. b. This is to check c. How a set of values d. can be replaced by another e. set of values and that too f. in the most efficient way. cu. And also handle large numbers. ??. Oops, too big! 99 bottles of beer on the wall does not translate!
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[Corion]: ** chore
[Corion]: So I guess I will simply implement the linear scan first and wait with more fancy stuff until it becomes a problem
[karlgoethebier]: Lady_Aleena: ++ for "The Man Crusher Everyday"
[karlgoethebier]: this mad my day
[karlgoethebier]: no typo
[marioroy]: At the Fransiscan monastery, got stuck up high in a tree from pruning and the chainsaw with large branch fell and broke the latter, but not me fortunately. Was stuck there for a while until a firetruck came by.
[Corion]: marioroy: So you live dangerously ...
[Lady_Aleena]: s/latter/ladder/; # ? marioroy
[karlgoethebier]: marioroy: Praise the Lord
[marioroy]: Well, that's why there must be angels around, invisible or not.

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