[Proto-Scripty] Re: Custom signal
Hi,
You suggested to use:
a = []
instead of:
a = new Array()
What is the difference?
It's shorter and does exactly the same thing. Similarly, `{}` is the
same as `new Object()`.
-- T.J. :-)
On Dec 7, 9:43 pm, Frédéric f...@gbiloba.org wrote:
On lundi 07 décembre 2009, Tobie Langel wrote:
A couple suggestions:
https://gist.github.com/bb3d40f6915118da4dec
Thanks!
You suggested to use:
a = []
instead of:
a = new Array()
What is the difference?
PS: about the try/catch, in my real code, I log the error on Firebug
console...
--
Frédéric
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[Proto-Scripty] Re: Custom signal
I'm not sure it will do what I'm looking for. If I understand, your
code will call the same func with all arguments, but one by one. What
I want to do is to call each slot with all arguments.
Here is an example:
function func1(arg1, arg2) {
...
}
function func2(arg1, arg2) {
...
}
mySignal = new Signal();
mySignal.connect(func1);
mySignal.connect(func2);
The call:
mySignal.emit('a', 3);
will in fact do:
func1('a', 3);
func2('a', 3);
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Re: [Proto-Scripty] Re: Custom signal
the global variable arguments will give u an array of arguments...
https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/Function/arguments
Alex Mcauley
http://www.thevacancymarket.com
- Original Message -
From: fma f...@gbiloba.org
To: Prototype script.aculo.us prototype-scriptaculous@googlegroups.com
Sent: Monday, December 07, 2009 9:31 AM
Subject: [Proto-Scripty] Re: Custom signal
I'm not sure it will do what I'm looking for. If I understand, your
code will call the same func with all arguments, but one by one. What
I want to do is to call each slot with all arguments.
Here is an example:
function func1(arg1, arg2) {
...
}
function func2(arg1, arg2) {
...
}
mySignal = new Signal();
mySignal.connect(func1);
mySignal.connect(func2);
The call:
mySignal.emit('a', 3);
will in fact do:
func1('a', 3);
func2('a', 3);
--
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[Proto-Scripty] Re: Custom signal
Good!
Is it possible to pass again this var to another function? What if I
do:
function func2(arguments) {
...
}
function func1() {
func2(arguments);
}
func1(a, b);
Does it work?
--
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[Proto-Scripty] Re: Custom signal
Hi fma,
If you test exemple you'll gave, it could result in something like
that:
function func2(arguments) {
alert(arguments);
alert($A(arguments));
}
function func1() {
func2(arguments);
}
func1('a1','b2');
The body of func2 will alert the arguments received, which ius of
course the one you create in the call to func1.
in first alert, you'll receive the native arguments. It is in fact not
a real object, but a fake Array. It means, that it's an array with
only some Array's methods (like length).
But thanks to prototype, you could convert it in a REAL array with
standard method, and prototype method. An now it's a pleasure playing
with arguments :))
--
david
On 7 déc, 12:53, fma f...@gbiloba.org wrote:
Good!
Is it possible to pass again this var to another function? What if I
do:
function func2(arguments) {
...
}
function func1() {
func2(arguments);
}
func1(a, b);
Does it work?
--
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Re: [Proto-Scripty] Re: Custom signal
arguments is global...
consider this ...
function foo('one','two','three') {
alert(arguments[0]); // one
alert(arguments[1]); // two
alert(arguments[2]); // three
}
Alex Mcauley
http://www.thevacancymarket.com
- Original Message -
From: fma f...@gbiloba.org
To: Prototype script.aculo.us prototype-scriptaculous@googlegroups.com
Sent: Monday, December 07, 2009 11:53 AM
Subject: [Proto-Scripty] Re: Custom signal
Good!
Is it possible to pass again this var to another function? What if I
do:
function func2(arguments) {
...
}
function func1() {
func2(arguments);
}
func1(a, b);
Does it work?
--
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[Proto-Scripty] Re: Custom signal
@fma:
Is it possible to pass again this var to another function? What if I
do:
Worth reading up on the `arguments` variable in the spec[1] (warning,
multi-meg PDF). Also check out Function#apply, which is probably what
you're looking for:
var Thingy = Class.create((function(){
function foo() {
bar.apply(this, arguments);
}
function bar(a, b, c) {
alert(a = + a);
alert(b = + b);
alert(c = + c);
}
return {foo: foo, bar: bar};
})());
var t = new Thingy();
t.foo(1, 2, 3);
// Alerts a = 1, then b = 2, then c = 3
The first argument to Function#apply is the context (the value `this`
should have within the call). The second argument is an array (or
array-like thing, such as `arguments`) of arguments to pass to the
function.
[1]
http://www.ecma-international.org/publications/files/drafts/tc39-2009-025.pdf
@Alex:
arguments is global...
No, it's local to the function scope, like the formal arguments and
vars inside the function (in fact, like them it's a property of the
variable object for that execution context).
--
T.J. Crowder
Independent Software Consultant
tj / crowder software / com
www.crowdersoftware.com
On Dec 7, 12:26 pm, Alex McAuley webmas...@thecarmarketplace.com
wrote:
arguments is global...
consider this ...
function foo('one','two','three') {
alert(arguments[0]); // one
alert(arguments[1]); // two
alert(arguments[2]); // three
}
Alex Mcauleyhttp://www.thevacancymarket.com
- Original Message -
From: fma f...@gbiloba.org
To: Prototype script.aculo.us prototype-scriptaculous@googlegroups.com
Sent: Monday, December 07, 2009 11:53 AM
Subject: [Proto-Scripty] Re: Custom signal
Good!
Is it possible to pass again this var to another function? What if I
do:
function func2(arguments) {
...
}
function func1() {
func2(arguments);
}
func1(a, b);
Does it work?
--
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Re: [Proto-Scripty] Re: Custom signal
Le lundi 7 décembre 2009 12:46, T.J. Crowder a écrit :
Worth reading up on the `arguments` variable in the spec[1] (warning,
multi-meg PDF). Also check out Function#apply, which is probably what
you're looking for:
It works fine! Here is the code I now use:
var Signal = Class.create({
initialize: function () {
this._slots = new Array();
},
emit: function() {
for (i = 0; i this._slots.length; i++) {
try {
this._slots[i].apply(this, arguments);
}
catch (e) {
}
}
},
connect: function(slot) {
if (!this._slots.include(slot)) {
this._slots.push(slot);
}
},
disconnect: function(slot) {
if (this._slots.include(slot)) {
this._slots.splice(this._slots.indexOf(slot, 1));
}
},
disconnectAll: function() {
this._slots = new Array();
},
});
Thanks for your help :o)
--
Frédéric
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Re: [Proto-Scripty] Re: Custom signal
On lundi 07 décembre 2009, Tobie Langel wrote: A couple suggestions: https://gist.github.com/bb3d40f6915118da4dec Thanks! You suggested to use: a = [] instead of: a = new Array() What is the difference? PS: about the try/catch, in my real code, I log the error on Firebug console... -- Frédéric -- You received this message because you are subscribed to the Google Groups Prototype script.aculo.us group. To post to this group, send email to prototype-scriptacul...@googlegroups.com. To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.
