Exercise 17 | Index << >> |
Run some benchmarks comparing x⍳y
and (,⊂x)(8⌶)(,⊂y) .
)load dfns x←⎕nl 3 ⍴x 197 12 y←(⍴x)⍴x cmpx 'x⍳y' 'x⍳x' '(,⊂x)(8⌶)(,⊂y)' '8⌶⍨,⊂x' x⍳y → 2.0e¯5 | 0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕ x⍳x → 2.0e¯5 | 0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕ (,⊂x)(8⌶)(,⊂y) → 8.8e¯6 | -56% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕ 8⌶⍨,⊂x → 3.8e¯6 | -81% ⎕⎕⎕⎕ |