June 2018
Beginner
722 pages
18h 47m
English
Content preview from Introduction to Programming
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Widening and narrowing reference types
In the case of reference types, assigning a child object reference to the variable of the parent class type is called widening reference conversion or upcasting. The assigning of a parent class type reference to the variable of a child class type is called narrowing reference conversion or downcasting.
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