rt_setsubset | R Documentation |
returns TRUE if 'set1' is a subset of 'set2'. Returns 'FALSE' if either 'set1' or 'set2' is 'NULL' (even if they are both NULL). The reason for this is because it is used to test sets, and more often then not, NULL values when testing sets is indicative of a bug.
rt_setsubset(set1, set2)
set1 |
the set that is a subset |
set2 |
the set that is the superset |
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