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Synopsis Not equal operator on set values.
Syntax Exp1 != Exp2
Types
Exp1 Exp2 Exp1 != Exp2
set[T1] set[T2] bool
Description Yields true if both arguments are unequal sets and false otherwise.
Examples 
rascal>{1, 2, 3} != {3, 2, 1};
bool: false
rascal>{1, 2, 3} != {1, 2};
bool: true

Questions
Question [1].
The type of [8, -5.5453819271221680] != [11.3386163618974960, 11, 13.3327579036644680, -17] is

Question [2]. 
({7, 6} != {7, 6}) ==

Question [3]. 
({18} != {47, 33}) ==



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