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package main
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import (
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"fmt"
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)
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func main(){
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// map[KeyType]ValueType 集合类型
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var personSalary map[string]int
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// go的三个引用类型 map slice chan
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if personSalary == nil {
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fmt.Println("map is nil. Going to make one.")
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personSalary = make(map[string]int)
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}
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} |
