Shallow Comparison(Primitive Values)
Shallow comparison is when the properties of the objects being compared is done using "===" , for Example when we compare the previousprops and nextprops in React component , if there are equal nothing is rendered.
The Shallow comparison is when you compare the primitive values like numbers , boolean , Strings . undefined and null are additional primitive types.
Note: Function , Objects and Array are a reference types not primitive (unprimitive).
more info : https://academind.com/tutorials/reference-vs-primitive-values
