List Commands Library for 50g

[pier4r]

I do not know if LSHUF is changed much since 1.1.0d (that is in one of my 50g, as I hadn't the need to update it), but it seems to behave a bit differently than random picks.


Setup.

You have a list with elements { 1 2 3 4 }

You want to pick elements from this list until they match a certain combination. Say { 1 2 4 3 1}

If I use (this in a loop)

Code:


1 goalSize
START
  listElements LSHUF HEAD
NEXT
goalSize \->LIST
goal ==

vs

Code:


1 goalSize
START
  listElements listElementsSize RAND * 1 + IP GET
NEXT
goalSize \->LIST
goal ==

with a check to stop if trying more than
listElementsSize goalSize ^ 2 *
attempts, for the test done by me LSHUF is never successful, while the approach with rand return a result in approximately (over a lot of repetitions)
listElementsSize goalSize ^ 0.3 *
attempts.

A known issue? Maybe LSHUFdoesn't really work with small lists?