Invalid Index error when index is out of range

[Descolada]

Sorry, I didn't read the docs carefully enough, using Default wouldn't work:

Setting a default value does not prevent an error from being thrown when the index is out of range.

It would work in such a case:

Code: Select all

Array.Prototype.DefineProp("Default", {get:(*)=>""})
test := ["a",,"b"]
MsgBox test[2]

Unfortunately I don't know of any additional ways other than the ones already mentioned here.

[iPhilip]

One of the ways that @swagfag suggested is to override the default Array's __Item.Get. You can do so as follows:

Code: Select all

OverrideArray()
OverrideArray() {
   Get := Array.Prototype.GetOwnPropDesc('__Item').Get
   Array.Prototype.DefineProp('__Item', {Get: (this, key) => this.Has(key) ? Get(this, key) : ''})
}

a := [1]
MsgBox a[1] " " a[2]

I hope this helps.