Difference between == and ===
In swift 3 and above
=== (or !==)
- Checks if the values are identical (both point to the same memory address).
- Comparing reference types.
- Like
==in Obj-C (pointer equality).
== (or !=)
- Checks if the values are the same.
- Comparing value types.
- Like the default
isEqual:in Obj-C behavior.
Here I compare three instances (class is a reference type)
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