(cLive ;-)(Golf) Analyzing Time From tcpdump Output

Are you sure? Try running it... :)

The \d+ is greedy too...

cLive ;-)

Comment on (cLive ;-)(Golf) Analyzing Time From tcpdump Output

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Re: (cLive ;-)(Golf) Analyzing Time From tcpdump Output by chipmunk (Parson) on Feb 05, 2002 at 16:00 UTC
Yes, I am sure. I did run it, and it output the wrong answer: `-49.994325 -` [download] It doesn't matter that \d+ is greedy, because .* is greedy and gets to go first. The .* only backtracks far enough to allow the \d+ to match. \d+ can match a single digit, so .* only gives up a single digit. But to get the correct answer, \d+ has to match two digits before the decimal point, not one. On the other hand, it's okay if $2 only contains one digit before the decimal point, if $1 also contains a single digit before the decimal point: `perl -lp0e'/(\d\.\d+).*(\d\.\d+)/s;$_=$2-$1'`	[reply] [d/l] [select]

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Re: (cLive ;-)(Golf) Analyzing Time From tcpdump Output
by chipmunk (Parson) on Feb 05, 2002 at 16:00 UTC

-49.994325
-
[download]

and

On the other hand, it's okay if $2 only contains one digit before the decimal point, if $1 also contains a single digit before the decimal point: perl -lp0e'/(\d\.\d+).*(\d\.\d+)/s;$_=$2-$1'

[reply]
[d/l]
[select]