It is weird, but that what the ECMAScript committee decided. It is a bit inconsistent, but you are actually calling functions and not really casting. So you'll have to live with converting as to whether the string == "true"
________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Luis Eduardo Sent: Wednesday, April 18, 2007 9:06 PM To: [email protected] Subject: Re: [flexcoders] boolean not casting ok from string yeah shaun, you are rigth. After follow your sugestion i searched in the docs and found what you mean here: http://livedocs.adobe.com/flex/201/langref/package.html#Boolean <http://livedocs.adobe.com/flex/201/langref/package.html#Boolean> () Boolean its a function that have the same behavior than the Boolean constructor that take a non-empty string and convert it to "true". aww. very weird. anyway thank you and the others to help understand what is going on here. now i will try to minimize the damages :) []'s, Luís Eduardo. shaun escreveu: > Hi, > > Its not a bug. Note: the Constructor for Boolean in the docs. > Think about it as if you have the following: > > var moo:String = "Moooooooooo"; > if (moo) { > // have a cow. > }else{ > //no cow. > } > > So, Boolean("false") is true! > > var y; > var x:Object; > var b:Boolean = Boolean("false"); > trace("b1 false is "+b.valueOf()); > > b = 0; > trace("b2 (0) is "+b.valueOf()); > > b = 1; > trace("b3 (1) is "+b.valueOf()); > > b = 2; > trace("b4 (2) is "+b.valueOf()); > > b = -1; > trace("b5 (-1) is "+b.valueOf()); > > b = null; > trace("b6 (explicit null) is "+b.valueOf()); > > b = x; > trace("b7 (unassigned null, undef) is "+b.valueOf()); > > b = y; > trace("b8 (undef) is "+b.valueOf()); > > b = (new Object() as Boolean); > trace("b9 (as not a boolean ie, null) is "+b.valueOf()); > > --------------------------------------------------------- > b1 false is true > b2 (0) is false > b3 (1) is true > b4 (2) is true > b5 (-1) is true > b6 (explicit null) is false > b7 (unassigned null, undef) is false > b8 (undef) is false > b9 (as not a boolean ie, null) is false > > -------------------------------------------------------- > > HTH, > shaun > >
