CODEWITHSUNDEEP
netlogo
Switters
Switters

Reputation: 119

Netlogo: converting reporter to anonymous procedure

I'm having trouble converting an older model to Netlogo 6. Specifically, I have two reporters process lists that I can't get to work correctly with the new syntax. Both incorporate the old ?2 ?1 syntax used in V5.0 and below. I would appreciate any assistance. Here is the code

to-report util-partial-sums [#lst]                                                                  
  set #lst (fput [0] #lst)  
  report butfirst reduce [lput (?2 + last ?1) ?1] #lst 
end


to-report util-compare-adjacent-pairs-in-list [randnum specieslist]

let post 0
let list1 (butlast specieslist)                                                                      
let list2 (butfirst specieslist)                                                                      

ifelse randnum <= first specieslist [set post 0]                                                     
  [ifelse randnum > last specieslist [set post position (last specieslist) specieslist]              
    [
       (foreach list1 list2 [
          if randnum > ?1 and randnum <= ?2 [set post ((position ? specieslist) + 1)]])              
    ]
  ]
report post
end

Upvotes: 3

Views: 126

Answers (1)

mattsap
mattsap

Reputation: 3806

Anonymous procedures now require you to explicitly define parameters (in-line), rather than use pre-defined 1st/2nd.

That being said:

[lput (?2 + last ?1) ?1]

should be mapped to

[[x y] -> lput (y + last x) x]

The same issue occurs within the for loop.

This is particularly useful: https://ccl.northwestern.edu/netlogo/docs/programming.html#anonymous-procedures

Anonymous procedure takes more than one input
nothing

(foreach xs ys [ [ x y ] -> setx x + y ])

(map [ [ x y ] -> x mod round y ] xs ys)

Upvotes: 3

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