Deleting from an array

[Big_Al]

Hi there, its me with another array question.

Is there a way to delete a specific value in an array? For example, the array:

"Banana Peel,Hippopotamus Leg,Computer Wire,Keyboard"

Would there be any way to delete just "Computer Wire" from the array? I found the Array.splice thingy, but it seems that you need to know the index of the thing. Therefore i guess my question is: Is there any way to find the index of a particular value.

In the thing I am making, the value could be at any index in the array (it is put in place by the user), so I could not just say Array.splice(2,1,). Any ideas?

Thanks.

[Jubba]

using pop()



myArray1 = ["1", "2", "3"];
myArray1.pop ();
trace ("myArray1 = " + myArray1);

// Outputs:
// myArray1 = 1,2


well POP deletes the last thing added to the array..

shift deletes the first thing added to the array...

as far as deleting something inside... you'll have to make a function up...

[Big_Al]

but doesn't using pop() just take out the last value in an array? I was looking for something that would delete a specific value that could be anywhere in the array, not just in the last space.

For example, an array:

a,r,s,h,p,g,m,n,d

Is there any way that a script could find and delete only the "h", rather than only delete the last or first part of the array? Or is there some way to move a value to the last part of the array and then use pop() to delete it?

[Jubba]

as far as deleting something inside... you'll have to make a function up... better wait for sen or someone... I am heading out... sorry..

[Big_Al]

oops, didnt see the "youll have to make a function up" part. Now i am stuck on that. I dont know of any ways to find a value in an array. or did you mean something else...

[ahmed]

i dont have the time to test it out.. but i think this should do it


// the name of your array goes in arrayname, and the text that you want to be deleted goes in entry
function deleteEntry(arrayname, entry)
{
n=arrayname.length
for(i=0; i<(n+1); i++){
if (arrayname[i] == entry)
{
arrayname[i] = ""
break;
}
}


let me know if it works
:)

[CyanBlue]

Simplest one I can create...
tempArray = new Array("Banana Peel", "Hippopotamus Leg", "Computer Wire", "Keyboard");
trace("Before : " + tempArray);
tempArray.splice(getItem("Computer Wire"), 1);
trace("After : " + tempArray);
function getItem(str)
{
for (i = 0 ; i < tempArray.length ; i++)
{
if (tempArray[i] == str)
return i;
}
return -1;
}
Before : Banana Peel,Hippopotamus Leg,Computer Wire,Keyboard
After : Banana Peel,Hippopotamus Leg,Keyboard

[Jubba]

Ahmed yours out puts this:



Array = 1,,3


I kept having the same problem.

Nice one Blue. :)

[ahmed]

oh.. i thought the intention was just to empty the array entry.. misunderstood it =).. and yeah.. nice one blue :P

[CyanBlue]

Well... Not really nice one, I guess... That method will work just fine if I have small number of elements in the array... But think about the case when you have to traverse a couple thousand elements to find one and that one happened to be at the end of the array???

ahmed's arrayname[i] = "" line should be arrayname.splice(i, 1); to properly delete the item from the array...

[ahmed]

so this is the final thing?


function deleteEntry(arrayname, entry)
{
n=arrayname.length
for(i=0; i<(n+1); i++){
if (arrayname[i] == entry)
{
arrayname.splice(i, 1);
break;
}
}


=)

[CyanBlue]

Yup... That should do the job... =)

[Big_Al]

well, thanks to all who have been so kind as to help me =)

[pom]

A prototype could be nice too :)
Array.prototype.deleteEntry=function(entry) {
var n=this.length;
for(i=0; i<(n+1); i++){
if (this[i] == entry){
this.splice(i, 1);
break;
}
}
return this;
}Or even
Array.prototype.deleteEntry2=function(entry) {
for(var i in this){
if (this[i] == entry){
this.splice(i, 1);
break;
}
}
return this;
}pom :phil:

[Big_Al]

just one more quick question...

is it possible to store an array in a flash shared object, or will it store as a variable and then I would have to convert it back into an array when I get it out of the SO?

i think there was a thread or something on this site about converting variables that were once arrays back into arrays...

thanx

[pom]

I believe that the data of a SO is an object, so you can store pretty much anything in there.

[CyanBlue]

Nice job, bro... =)

Yes... You can add array into the Shared Object with no problem...

[Big_Al]

thank you

[CyanBlue]

;)

[ahmed]

i found this prototype over at downloads.junioronline.us .. it pretty much does the same thing but in a more interesting way.. and its a prototype... :)



Array.prototype.removeItem = function(item) {
for (var n = 0; n<this.length; n++) {
if (this[n] == item) {
this.splice(n, 1);
return;
}
}
};

[CyanBlue]

Howdy...

Just out of curioisty... =)

Um... I do not see much difference between the prototype you have proviided and the one ilyaslamasse has provided up there... What did you mean by 'more interesting way'??? Maybe I am missing something here??? :cowboy:

[ahmed]

Originally posted by CyanBlue
Maybe I am missing something here??? :cowboy: nah.. its just two lines shorter :P.. basically they're the same actually.. sorry for any confusion i might have caused :)

[CyanBlue]

Nah... Don't be... You were just trying to help... =)

[ahmed]

=)