113 questions for “Generics”

Found in 1 field. Select a question to see its full answer.

Matching topics

C# Generics 17 Java Generics 15 TypeScript Generics 10 Flutter Dart Collections & Generics 7

Information Technology

113 questions in 4 technologies

#	Question	Technology	Topic	Level
1	What are generics in C#, and what specific problems do they solve compared to writing type-specific code? C# › Generics	C#	Generics	Intermediate
2	What are generics and why use them? C# › Generics	C#	Generics	Beginner
3	What problem do generics solve compared to using 'any' for a reusable function? TypeScript › Generics	TypeScript	Generics	Beginner
4	What problem do generics solve compared to writing a method or class that accepts 'object'? C# › Generics	C#	Generics	Beginner
5	What problem do generics solve compared to using raw types (like a pre-Java-5 List without a type parameter), and how do they improve compile-time type safety? Java › Generics	Java	Generics	Beginner
6	What is covariance and contravariance in generics? C# › Generics	C#	Generics	Intermediate
7	What is a raw type in Java, and why does the compiler still permit using them (with an unchecked warning) despite generics having been available since Java 5? Java › Generics	Java	Generics	Intermediate
8	How are generics implemented for value types vs reference types in the CLR? C# › Generics	C#	Generics	Advanced
9	How do generics interact with arrays, and why does the JDK itself sometimes use an unsafe cast (like in ArrayList's internal implementation) to work around the inability to create generic arrays directly? Java › Generics	Java	Generics	Advanced
10	How does variance (covariance, contravariance, invariance) apply differently to Java arrays versus Java generics, and what practical safety trade-off does this design difference represent? Java › Generics	Java	Generics	Advanced

Show all 113 questions in Information Technology