Implements which
-like functionality for a big.matrix
,
with additional options for efficient comparisons (executed in C++);
also works for regular numeric matrices without the memory overhead.
signature(x = "big.matrix", cols = "ANY", vals = "ANY",
comps = "ANY", op = "character")
...
signature(x = "big.matrix", cols = "ANY", vals = "ANY",
comps = "ANY", op = "missing")
...
signature(x = "matrix", cols = "ANY", vals = "ANY",
comps = "ANY", op = "character")
...
signature(x = "matrix", cols = "ANY", vals = "ANY",
comps = "ANY", op = "missing")
...
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