Removing a specific element from a vector

Question

I am wondering how to remove a specific element from a vector.

For example, assume you have the following method:

private var element:String;
private vare Element:Vector<String>;
//This function assumes that Element has elements in it.
public function removeelement(element):Boolean
{
     for (var i:int =0; i<Element.length; i++)
     {
          if (element == String(i)
          {
               //How do I remove the element assuming it matches?
               return true;
          }
     }
     return false;
}

So from the code example above I was using Element.pop() but thats wrong -I think -as it removes the LAST element. I need to remove the element at the location of the match.

Lee_Burrows · Accepted Answer

Um not to be rude but where do you think I got the example code I showed you from LOL.

In my code I typed in Splice and saw the documentation on how its used. I was asking you if - IYO (in your oppinion) iof that looked right based upon the information given. I understand exsactlky what splice does...Its the first thing the index I am a bit lost on since it has to be a number i was like ok convert the matched element to a number and remove one it.

hi

you can use splice to remove elements but you need to run the loop starting with the last item (and precalc length as it will change if items are removed) to avoid errors:

var len:int = element.length;

for (var i:int=len-1; i>=0; i--)

{

if (element == String(i))

element.splice(i,1);

}

Kenneth Kawamoto · Answer

Vector.splice() is good but what if if you had multiple elements to remove in the Vector? I'd use recursive function like this:

private function removeElementFromStringVector(element:String, vector:Vector.<String>):void {
            if(vector.indexOf(element) > -1){
                vector.splice(vector.indexOf(element), 1);
                removeElementFromStringVector(element, vector);
            } else {
                return;
            }
}

...so that you can remove any number of elements in any positions:

var v1:Vector.<String> = new <String>["alpha", "beta", "gamma", "beta", "delta",  "beta"];
removeElementFromStringVector("beta", v1);
trace(v1);
            
var v2:Vector.<String> = new <String>["alpha", "beta", "gamma", "delta"];
removeElementFromStringVector("beta", v2);
trace(v2);
// trace
// alpha,gamma,delta
// alpha,gamma,delta

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded