Fidelity Investments Interview Question: What is the difference between a struct and a class?

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Fidelity Investments Interview Question

IOS Engineer Interview

What is the difference between a struct and a class?

Interview Answers

Anonymous

Oct 25, 2024

class: reference type, shared mutable state, inheritance struct: value type, immutable, no inheritance

Anonymous

Nov 3, 2024

Structs are value type and use stack data structure, thread safe due to the creating new copy every time (value type) Classes are reference type and use heap data structure, thread safety is not guaranteed and needs manual efforts to ensure it.

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Fidelity Investments Interview Question

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