BTW, check out Josh Tynjala's writeup of some of the new stuff that's going
to be in ECMAScript:
http://www.zeuslabs.us/2007/10/28/discover-ecmascript-4-the-future-of-actionscript/
Included is Map :)
You can read the document outlining some of the new stuff in ECMAScript 4
here:
Thanks for your replies, I think I can probably use either Object or
Dictionary as I know my keys are always Strings.
However this raises another question, namely what do these iterators
iterate through, the keys or the objects?
In old Java speak I have a MapString, Dog map;
if I say
for each
// iterate over strings/property names
for(var prop:String in obj)
{
trace(prop + = + obj[prop]);
}
// iterate over properties
for each(var member:Object in obj)
{
trace(member);
}
Should be more complete descriptions in the docs.
any idea why there is no formal Map object in AS3
Nope.
You can try (this works well with XML items, should work here I would
imagine).
for each(var mapItem:Object in map)
{
...
}
--- In flexcoders@yahoogroups.com, simonjpalmer [EMAIL PROTECTED]
wrote:
In the absence of a formal Map I am using an object as a key/value
pair map as follows:
var
for...in and for...each will both work on Object but what you're
really looking for is Dictionary. Dictionary supports those loops as well.
HTH,
Ben
--- In flexcoders@yahoogroups.com, simonjpalmer [EMAIL PROTECTED]
wrote:
In the absence of a formal Map I am using an object as a key/value
thanks, sorry to be dim, but what exactly do I put as the iterator in
these loops?
for each (what in map)
Can I use...
var o:Object;
for each (o in map)?
Incidentally I don't think a Dictionary works in my particular
instance because it uses the strict equality === operator which means
that I
Hi Simon,
Dictionary will work for you. Strings are passed by value, so it
doesn't matter if you have the same key var or not. Run this code to
see an example.
var d:Dictionary = new Dictionary();
var s1:String = foo;
var s2:String = foo;
d[s1] = bar;
trace(d[s2]);
As for what to use as the
Why a Dictionary?
A Dictionary was designed for Object keys not realy String keys.
A plain old fashioned Object will surely do just fine for him, ie
exactly as he had it in the first place the only thing he was missing
was how to loop over the keys, which would just be:
for(key:String in
Why a Dictionary?
Because he was asking about HashMaps.
As for his question about HashMaps/HashTables, Object is really the
nearest equivialent.
I would disagree, considering Dictionary supports Object keys and
Object does not.
Ben
--- In flexcoders@yahoogroups.com, reflexactions [EMAIL
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