Simple challenge in RPL, Extract the odd elements from a list

[Gilles59]

(08-16-2017 07:13 PM)compsystems Wrote:  Ok with DOSUBS, waiting other alternatives (converting to array, tran, etc.) or optimizations with DOLIST

PHP Code:

'x^4-1' FACTORS
«
  1
  « NSUB 2 MOD SWAP IFT »
  DOSUBS
» 


Hi Compystems,

With your example, you can also do

Code:

 « DUP « TYPE »  MAP SWAP IFT »

Of with GoferList, just :

Code:

 « « TYPE »  Filter »

These filters only the items that are not real numbers from the list.