Browse Questions
  • The core difference is value type vs reference type.
  • SPM is Apple's built-in dependency manager for Swift.
  • Generate the pair with TSKeyGen, then persist only the private key in the Keychain with a restrictive accessibility class and hand the public key to the server during enrolment.
  • Delegation is a pattern where one object hands off responsibility to another through a protocol, letting a child communicate back to its owner without knowing its concrete type.

Answer: The core difference is value type vs reference type.

structclass
TypeValue typeReference type
MemoryStack (usually)Heap
InheritanceNoYes
MutabilityExplicit (mutating)Implicit
ARCNoYes
deinitNoYes

Rule of thumb:

  • Use struct by default — safer, faster, no retain cycles
  • Use class when you need identity, inheritance, or Objective-C interop

Further reading