RPL mini-challenge: Create an anti-Identity Matrix

[Didier Lachieze]

(05-13-2018 02:44 PM)DavidM Wrote:  

(05-13-2018 06:00 AM)Joe Horn Wrote:  How about this:
<< IDN << NOT >> MAP >>

Nice, Joe! I'd be surprised if a more concise version exists (this one is 33 bytes). This is actually a great example of how size and speed don't always go hand-in-hand, though.

Same size but slower (19s):
<< DUP << ≠ >> LCXM >>