January 2006
Beginner
592 pages
16h 55m
English
contains, does not contain, is in, is not in
containment
string1containsstring2 string2is instring1 list1containslist2 list2is inlist1 record1containsrecord2 record2is inrecord1
Tests whether the first operand contains the second. The is in synonyms reverse the operand order of the contains synonyms—that is, with is in, the second operand comes physically before the first operand (as deliberately shown in the syntax listings), but it is still the second operand. This is relevant in the rules for implicit coercions.
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