How to use the can-query-logic/src/set.defineComparison function in can-query-logic
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canjs / can-fixture / matches.js View on Github 
function makeComparatorType(compare) {
var Type = function(){};
var SetType = function(value) {
this.value = value;
};
SetType.prototype.isMember = function(value, root, keys){
return compare(this.value, value, root, keys);
};
canReflect.assignSymbols(Type,{
"can.SetType": SetType
});
set.defineComparison(SetType,SetType, identityComparitor);
set.defineComparison(set.UNIVERSAL,SetType,{
difference: function(){
return set.UNDEFINABLE;
}
});
return Type;
}
