Pattern

1.λ””μžμΈ νŒ¨ν„΄ - λ””μžμΈ νŒ¨ν„΄μ΄ λ­μ—μš”?

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2.λ””μžμΈ νŒ¨ν„΄ - 싱글톀 (SingleTon)

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3.λ””μžμΈ νŒ¨ν„΄ - μ˜΅μ €λ²„ (Observer)

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