[Vm-dev] [Pharo-project] #at:ifAbsent: for Array(s) could be faster

[stephane ducasse]

Elliot

How could we help there.

I would really like to sit with igor and do some stupid work on the VM. The best way to learn is to do something besides a master. So if this would be to help in addition I would 
really allocate time on my wonderfully exciting admin tasks granted by my status :)

> I agree.  I was going to brag that the Cog VM already has this implemented but the error code returned for a non-indexable receiver is wrong.  It should be #'bad receiver' but the prim always answers #'bad index'.  I'll fix this.  Primitive error codes and relevant usage in primitives still need to be ported to the standard VM though.

Stef