Comments on: Actionscript 2 Mystery of the day

By: Nikola

Nikola — Wed, 05 Dec 2007 18:36:59 +0000

:roll::roll::roll::roll::roll: nice i thing there is error

By: Lisandro Puzzolo

Lisandro Puzzolo — Tue, 03 Apr 2007 22:50:55 +0000

Actually, there is a “bug?” in Actionscript implementation.. The following code doesn’t work:

function a(){return “a”};
function b(){return “b”};
trace ( (a||b) () ); // this should trace “a” but traces “undefined”;

trace ( Function(a||b)()) ; //this DO trace “a”;

By: Niocola Marini

Niocola Marini — Wed, 30 Aug 2006 21:38:33 +0000

trace( (0 || 23) ); //return 23
trace( (1 || 23) ); //return 1
trace((Number(1) == true ? 0 : 23)); // returns 0

mistery solved, but
a question … what are code-gnomes ?
Are like ants, or the small mouse that make cofe in the automated machine
here in italy? Are code-gnomes that bring me the result of a formula ?
(somtime they are drunken ! )

By: adam

adam — Fri, 25 Aug 2006 02:56:23 +0000

Weird,

trace((Number(0) || Number(23))); // returns 23
trace((Number(0) == false ? 0 : 23)); // returns 0

Should Flash fundamentally be doing the same evaluation on both traces?
The first trace says, if the first part is true, return it, if not, return the second half. The second trace is doing the same thing, except Im spelling it out for flash. Because, Flash evaluates Number(0) as false.

Oh yea, no code-gnomes were harmed in the execution of this experiment.

By: Scott Janousek

Scott Janousek — Wed, 23 Aug 2006 17:09:33 +0000

You have to enter 4 8 15 16 first, THEN 23, followed by 42!

Confused?! Watch the orientation film produced by Hanso Corporation.

By: Josh

Josh — Tue, 22 Aug 2006 21:04:03 +0000

That’s a good try Keith, but you forgot the part about the code-gnomes toiling for hours in the caves of Ecma to bring us these return values. Reportedly, many gnomes perish each day just to maintain the supply of Boolean return values we developers consume in just one debug session.

By: Sven

Sven — Tue, 22 Aug 2006 20:38:13 +0000

Weird,

anyway, it works this way:

var result:Boolean = Boolean(0 || 1);
trace(result);

By: Keith Peters

Keith Peters — Tue, 22 Aug 2006 20:28:42 +0000

the way flash handles boolean ORs is it evaluates the first half. If it evals to true, it returns the first half. If it evals to false, it returns the second half. It doesn’t convert what it returns, just returns the raw value. If you actually had boolean values in there, trace(false || true) it would return the second value, true. But since 0 evaluates to false, it just returns 23.