Introduce

  • Array Value type ,Slice and Map Is a reference type . There is a big difference between them , Especially when passing parameters .
  • in addition ,Slice and Map The variable of It's not enough just to make a statement , You have to allocate space ( That is initialization ,initialization) Can be used .
  • Third ,Slice and Map These reference variables Of Memory allocation , Don't worry about it , because golang Exist gc The mechanism ( Garbage collection mechanism )

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http://studygolang.com/articles/2685

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