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https://github.com/unknwon/the-way-to-go_ZH_CN.git
synced 2025-08-12 07:02:11 +08:00
32 lines
798 B
Go
32 lines
798 B
Go
package main
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import "fmt"
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func main() {
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var value int
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var isPresent bool
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map1 := make(map[string]int)
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map1["New Delhi"] = 55
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map1["Beijing"] = 20
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map1["Washington"] = 25
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value, isPresent = map1["Beijing"]
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if isPresent {
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fmt.Printf("The value of \"Beijin\" in map1 is: %d\n", value)
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} else {
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fmt.Printf("map1 does not contain Beijing")
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}
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value, isPresent = map1["Paris"]
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fmt.Printf("Is \"Paris\" in map1 ?: %t\n", isPresent)
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fmt.Printf("Value is: %d\n", value)
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// delete an item:
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delete(map1, "Washington")
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value, isPresent = map1["Washington"]
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if isPresent {
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fmt.Printf("The value of \"Washington\" in map1 is: %d\n", value)
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} else {
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fmt.Println("map1 does not contain Washington")
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}
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}
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