cmpx 'b←1.7>XX[;4]' 'b←1.7>↑XX[;4]' 'b←1.7>4⊃TT'
b←1.7>XX[;4] → 2.74E¯4 | 0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
b←1.7>↑XX[;4] → 2.73E¯4 | -1% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
b←1.7>4⊃TT → 1.28E¯5 | -96% ⎕
cmpx 'b⌿XX' '(⊂b)⌿¨TT'
b⌿XX → 3.30E¯4 | 0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
* (⊂b)⌿¨TT → 1.62E¯4 | -51% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
cmpx 'XX⍳XX' 'TT(8⌶)TT'
XX⍳XX → 1.61E¯3 | 0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
TT(8⌶)TT → 9.45E¯4 | -42% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
cmpx 'XX[j;]' '(⊂j)∘⌷¨TT' ⊣ j←?3⍴≢XX
XX[j;] → 3.98E¯7 | 0% ⎕⎕⎕⎕⎕⎕
* (⊂j)∘⌷¨TT → 1.84E¯6 | +363% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
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