hp 28s - creating nested lists - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: General Forum (/forum-4.html) +--- Thread: hp 28s - creating nested lists (/thread-3116.html) Pages: 1 2 |
RE: hp 28s - creating nested lists - Werner - 02-20-2015 07:06 AM ? It works for me. When you say the code has errors, does it not compile or does it not run? Does the 28 have a FOR .. STEP statement? If not, then you can't use this version and will have to stick to one of the two others. (I don't have a 28) If it compiles, then you must've entered a typo.. NDUPN is a useful little subprogram.. I always try to make 'beautiful' code, ie. short yet clear, and this way it's both ;-) And perhaps NDUPN can be used elsewhere? Cheers, Werner RE: hp 28s - creating nested lists - mbrethen - 02-20-2015 12:59 PM It compiles, but as written it gives an error message about a bad 'FOR statement.' I checked for typos. The reference manual shows the HP 28 FOR/STEP statement as: start finish FOR name loop-clause increment STEP increment must be a real number. For example: Code: 1 11 FOR x x SQ 2 STEP RE: hp 28s - creating nested lists - Werner - 02-20-2015 02:15 PM Aha.. that's probably it. The 48/49 STEP syntax specifies: Quote:If the argument of STEP is an algebraic expression or a name, it is automatically evaluated to a number.But the 28 accepts only a real number, not a variable holding one. So, just add EVAL before STEP (or even better, before DUP). That should do it. Code: \<< Cheers, Werner RE: hp 28s - creating nested lists - mbrethen - 02-20-2015 07:00 PM Edit: The True/False objects in the IFTE statement should be program objects on the 28. Code: \<< RE: hp 28s - creating nested lists - Werner - 02-21-2015 11:30 AM Then you might as well write it as a normal IF THEN ELSE statement Code: IF DUP 0 < 7.5 bytes shorter |