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xi.lin has asked 13 questions and find answers to 16 problems.

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xi.lin questions

Dispatch rule of concurrent queue using GCD when sleep in one thread
Is there any callback for swipe back gesture in iOS?
How to debug a crash which happened when come back from background
Setting vertical align of truncated tails for NSAttributedString with NSTextAttachment
UILabel is marked as red when `Color Blended Layers` is selected
How to profile time consuming part in webpack build
Jackson custom deserializer for one field with polymorphic types

xi.lin answers

Split view controller must be root view controller
Undefined symbols for architecture x86_64 AFNetworking with Cocoapods
debug: Obtain a list of all instance variables of an object (unknown type)
UILabel is marked as red when `Color Blended Layers` is selected
clang-format: Stop breaking long methods up
Ng-model undefined in the controller
How to change the corner radius of UISegmentedControl?
UILabel attributed text can't have multiple lines if you change baseline offset attribute