Find: Difference between revisions
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== K3 ==
In K3, Find is [[atomicity|non-atomic.]] It considers <code>y</code> as a single unit, and will return a single index for it. <code>?/:</code> is needed to simulate the functionality of later Ks.
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Revision as of 09:05, 18 January 2022
Find
x&y
The find primitive is used to find the index of an atom y
in array x
. It returns 0N
if the element is not found.
Find is right atomic.
"XYZ"?"XYXZB" 0 1 0 2 0N 5 8 5?56 8 1 5 0N 1 0N 0
For dictionaries, returns the keys associated with the given values:
(`a`b`c`d!23 14 9 5)?9 14 `c`b
K3
In K3, Find is non-atomic. It considers y
as a single unit, and will return a single index for it. ?/:
is needed to simulate the functionality of later Ks.