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{⎕←⊃⍵,⎕DL ⍵⎕←⍵⊣⎕DL⍵}&¨⎕
What it does:
¨⎕ : for each element of the input & : do on a separate thread ⎕DL⎕DL⍵ ⍵ : wait approx. ⍵ seconds ⎕←⊃⍵⎕←⍵ : output ⍵
{⎕←⊃⍵,⎕DL ⍵}&¨⎕
¨⎕ : for each element of the input & : do on a separate thread ⎕DL ⍵ : wait approx. ⍵ seconds ⎕←⊃⍵ : output ⍵
{⎕←⍵⊣⎕DL⍵}&¨⎕
¨⎕ : for each element of the input & : do on a separate thread ⎕DL⍵ : wait approx. ⍵ seconds ⎕←⍵ : output ⍵
