Netlogo: Assign variable using probabilities

Question

How to assign a string or integer variable to turtle, using probabilities of the variables in a group/list? For example it is 0.4 probability that one specific variable is u

Answer 1

Don't overlook the rnd extension: https://github.com/NetLogo/Rnd-Extension But it is possible to do it essentially as you propose. I'll to that here, but it would be better to use explicit arguments.

to-report random-pick
  let _r random-float 1
  let _ps [0.1 0.2 0.4 0.3]
  let _lst ["String1" "String2" "String3" "String4"]
  let _i 0
  while [_r >= item _i _ps] [
   set _r (_r - item _i _ps)
   set _i (_i + 1) ]
  report item _i _lst
end