class - Initializing unknown type in Actionscript 3.0 -

class - Initializing unknown type in Actionscript 3.0 -

to maintain programme running smoothly, have create objects when need them. in case, want see if object of unspecified class null, , if not, phone call tell initialize. (i think "initialize" right term, right me if wrong)

if (someobject == null) { someobject = new someobject.class() }

obviously, code not work. thought seems right, actionscript not agree me. how can achieved?

edit - perhaps help simplify (or complicate) answer. know someobject extends class superclass. can utilize property superclass instantiate someobject?

i'm going create effort @ getting on right track toward useful answer.

firstly, looking @ example:

if (someobject == null) { someobject = new someobject.class() }

i'm not sure you're trying convey here. if someobject null, cannot extract info it. if type someobject e.g:

var someobject:sprite;

you cannot access info fact property someobject expecting sprite*

*you can utilize describetype() access type if someobject fellow member of class, lets not go there.

if want able to:

check if instance of specific class exists, , if not; create instance of specified class.

you can write like:

var existing:object = { }; function findormake(type:class):* { var key:string = type.tostring(); if(!existing.hasownproperty(key)) { // need create new instance of class. existing[key] = new type(); } homecoming existing[key]; }

which can used like:

var someobject:sprite = findormake(sprite); // makes new sprite. someobject = findormake(sprite); // references above sprite.

actionscript-3 class flash initialization