vof←{                           ⍝ Vector of functions.
    ⍺←⊂                         ⍝ ⍺ elided: ⊂⍵.
    (al ar)(wl wr)←{            ⍝ distribute arg(s).
        ((-1<≢⍵)↓,⍵)(⎕IO⊃⌽,⍵)   ⍝ permissive scalar extension,
    }¨⍺ ⍵                       ⍝ of each arg.
    1≡⍺ 1:(⍺⍺ wl),⊂⍵⍵ wr        ⍝ mondadic
    (al ⍺⍺ wl),⊂ar ⍵⍵ wr        ⍝ dyadic
}

code_colours

test script

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