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Re^3: Golf: Length of longest line in a file

by ikegami (Pope)
on Jul 04, 2010 at 18:39 UTC ( #848000=note: print w/replies, xml ) Need Help??


in reply to Re^2: Golf: Length of longest line in a file
in thread Golf: Length of longest line in a file

Three (two) less for cmd.

perl -nE"$s^=$_}{say length$s" # Switch quotes for bash perl -nE "\$Z[y///c]}{say$#Z" # Switch quotes for bash perl -nE"\$Z[y///c]}{say$#Z" # Switch quotes for bash perl -nE\$Z[y///c]}{say$#Z # cmd specific 1234567890123456789012345

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[ambrus]: Corion: from the docs, it definitely looks like it would be possible to write an AnyEvent driver for it using Prima::File and Prima::Timer.
[ambrus]: (I haven't found an idle event.)
[ambrus]: However, I also looked at the internals, and found two interesting things:
[marto]: stupid xpath question, I have a xpath copied from the browser, is the * wildcard supposed to work for IDs? e.g. '//*[@id="*"]/ div/div/header/p/a '?
[ambrus]: The main loop for unixish systems is in https://metacpan. org/source/ KARASIK/Prima-1. 49/unix/apc_app.c. It is a hand-rolled select loop, but also always spins at least once every 0.2 seconds for some reason.
[ambrus]: marto: no, not that way. if you just want to test for an existing id attribute, then write *[@id] , or you can match a regexp to the value of that attribute like *[@id=~/something/ ]
[marto]: ambrus, thanks I ended up going with '//*[starts- with(@id, "thread_")]...
[ambrus]: Sometimes it's easier to just match elements in ways other than xpath, like directly with perl code.

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