Memory Management

ARC, ownership, and the cycles that leak when ownership is unclear.

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0 of 4 complete

4 concepts · about 32 minutes of reading · 4 interview questions

Not startedIntermediate9 min
Automatic Reference Counting
How Swift knows when an object is no longer needed — and why it can be wrong.
Not startedIntermediate8 min
Retain Cycles
When two objects keep each other alive and ARC can never free either.
Not startedIntermediate7 min
Weak vs Unowned
Two ways to reference something without keeping it alive — and the crash that separates them.
Not startedAdvanced8 min
Closure Capture
Capture lists, and deciding what a stored closure should keep alive.

Quiz this category

Ten questions drawn from everything in Memory Management.