Demystifying '==' and '.hashCode' in Dart | by Ayush P Gupta | Medium
How to implement group list inside another group list (groupby). Is it possible to use multiple hashcode and operator== in a dart custom object - Stack Overflow
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Unique id (hash?) of variable when debugging dart app - Stack Overflow
Dart/Flutter — How to compare 2 objects | by Tran Huy Phuc | Nextfunc Co., Ltd | Medium
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Optional auto-generation of operator== and hashCode on classes with const constructors · Issue #1121 · dart-lang/language · GitHub