ChenYilong / ChenYilong/iOSInterviewQuestions
37 题 block 循环引用问题
Open
Q-A
- Dominant language
- Swift
- Stars
- 9.5k
- Forks
- 2.8k
- PR merge metrics
- No merged PRs in 30d
Description
ARC 下 __weak 可避免循环引用，__block 不行。 __block 仅在 MRC 下可解决循环引用的问题，但是会有野指针的问题。
Contributor guide
No contributing guide indexed for this repository
Research direction
Start with question 37 and its current answer, then review issue #50's distinction between __weak and __block under ARC and MRC. Done should be a clear, technically accurate explanation of the cycle-reference behavior and the dangling-pointer caveat; no file or test is identified in the issue.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- objective-c
- Domain
- content, documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100