Dyalog Forums

Is the following behaviour to be expected?

      )clear
clear ws
      input←?15 15⍴9
      +/,input
1111
      {p←⍵ ⋄ {p×+/,⍵}input}2 3 4
2222 3333 4444
      f←{p×+/,⍵}
      {p←⍵ ⋄ f input}2 3 4
VALUE ERROR: Undefined name: p
f[0] f←{p×+/,⍵}
        ∧

Yes this is normal.
The p referenced inside f has to be in the same lexical scope as that in which f is itself defined.

      {p←⍵ ⋄ f←{p×+/,⍵} ⋄ f input}

or

      {f←{p×+/,⍵} ⋄ p←⍵ ⋄ f input}

would work.