CRC
Index
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Cyclic Redundancy Check
Prob(CRC(x)=CRC(y)) = ε if x≢y
APL primitives that use CRC:
x⍳y
v14.1
index-of, extended definition
x(8⌶)y
v14.0
index-of on inverted tables
x⍳y
v14.1
index-of on relational matrices