Problem
How would you implement a singleton pattern in mobile development? Explain how you would ensure only one instance exists, when to initialize it, and how you would handle thread safety.
Practicing as: Mobile Engineer interview at Didi ChuxingHi, I'll play your Didi Chuxing interviewer for the Mobile Engineer role. Answer the question above like we're in the room, and I'll respond the way a real interviewer would.
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