3 ms·

Yep, or even apply inline as {+⌿⍤2(∘.≤)⍤1⍨⍵}cardMatrix

• Affric 3y ago
  Thinking about your comment further (and having read TFA and some of the comments) inline usage does seem to make more sense as it's only a few more characters. In that way it's transparent. Decreasing indirection (assuming that the operators always function simply and plainly. Thanks for that follow up comment.