Re^2: Difference arrays.

Okay… Mine has the bug that it stringifies the keys. agreed.

yours has a bug too! It doesn't work in this case:

kyle( \@q, \@p );
[download]

No! Mine has the bug in that it doesn't care for what BrowserUK asked for!

s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
+.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e

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Re^3: Difference arrays. by kyle (Abbot) on Sep 04, 2008 at 21:41 UTC
(OK, so as I was writing this, the node I'm replying to was updated. I'll post anyway...) I don't know what you mean. You've passed in the input arrays in the opposite order? The OP specifies that the second array is to be a proper subset of the first. If you reverse them, that violates this condition. So what would you expect to get back in that case? Mine returns (a reference to) an empty array. The solution from betterworld gets the same thing. The two solutions that moritz posted go into an infinite loop (apparently—I didn't exactly wait that long). The only other working solution, pjotrik's, gets something else. Anyway, here's an updated test script... Read more... (4 kB)	[reply] [d/l]

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Re^3: Difference arrays.
by kyle (Abbot) on Sep 04, 2008 at 21:41 UTC

(OK, so as I was writing this, the node I'm replying to was updated. I'll post anyway...)

I don't know what you mean. You've passed in the input arrays in the opposite order?

The OP specifies that the second array is to be a proper subset of the first. If you reverse them, that violates this condition. So what would you expect to get back in that case? Mine returns (a reference to) an empty array. The solution from betterworld gets the same thing. The two solutions that moritz posted go into an infinite loop (apparently—I didn't exactly wait that long). The only other working solution, pjotrik's, gets something else.

Anyway, here's an updated test script...