The opposite of instanceof
108376
Best way to "negate" an instanceof
32180
Why is "$A$ unless $B$" equivalent to $A \lor B$?
51340
Standalone ɴᴏʀ: "neither this nor that" versus "not this nor that"?
36618
What is the name for the grammatical device of putting "not" after a verb to negate it?
118858
Is there any way to negate a Predicate?
78242
Non-descending Tuples
119888
Is it possible to convert $\forall$ quantifiers to $\exists$ quantifiers without negation?
39515
instanceof - incompatible conditional operand types
107403
Is there a simple, elegant way to define singletons?
87983
Examples of Separable Spaces that are not Second-Countable
35582
instanceof check in EL expression language
96459
Check if instance is of a type
160
homeomorphism non-example
9714
Why does `instanceof` error rather than return `false` when used for 2 incompatible classes?
19007
How to check if an object is an instance of a namedtuple?
37706
Using "nor" in a list without "neither"
91443
What is the opposite of string.next?