Power (operator): Difference between revisions

Power (operator) (view source)

8 bytes added , 19:12, 14 June 2022

fixed arguments of function Y argument

6

edits

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 Power repeatedly applies <source lang=apl inline>f</source> to <source lang=apl inline>Y</source> based on the type of operand <source lang=apl inline>g</source>:
-* '''Function''': Must be dyadic and must return a boolean [[singleton]]. The previous iteration value is provided as left argument to <source lang=apl inline>f</source>, and the current iteration value is given as right argument. <source lang=apl inline>f</source> is repeatedly applied until this function returns 1.
+* '''Function''': Must be dyadic and must return a boolean [[singleton]]. The previous iteration value is provided as the right argument to <source lang=apl inline>f</source>, and the current iteration value is given as the left argument. <source lang=apl inline>f</source> is repeatedly applied until this function returns 1.
 * '''Integer''': Applies <source lang=apl inline>f</source> <source lang=apl inline>g</source> times to <source lang=apl inline>Y</source>. If <source lang=apl inline>g</source> is negative, then the inverse of <source lang=apl inline>f</source> (if available) is applied.
 * '''Integer Array''': In [[Extended Dyalog APL]], <source lang=apl inline>g</source> can be an integer array. Each integer <source lang=apl inline>i</source> in <source lang=apl inline>g</source> will be replaced by <source lang=apl inline>⊂(f⍣i)Y</source>.