54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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// For more tutorials : https://learngoprogramming.com
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// In-person training : https://www.linkedin.com/in/inancgumus/
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// Follow me on twitter: https://twitter.com/inancgumus
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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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// args := os.Args[1:]
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// if len(args) != 1 {
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// fmt.Println("[english word] -> [turkish word]")
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// return
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// }
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// query := args[0]
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// #1: Nil Map: Read-Only
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var dict map[string]string
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// #5: You cannot assign to a nil map.
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// dict["up"] = "yukarı"
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// dict["down"] = "aşağı"
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// #2: Map retrieval is O(1) — on average.
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key := "good"
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value := dict[key]
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fmt.Printf("%q means %#v\n", key, value)
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// #1B
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fmt.Printf("# of Keys: %d\n", len(dict))
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// fmt.Printf("Zero Value: %#v\n", dict)
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// #4: Nil map ready to use
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// if dict != nil {
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// value := dict[key]
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// fmt.Printf("%q means %#v\n", key, value)
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// }
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// #3: Cannot use non-comparable types as map key types
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// var broken map[[]int]int
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// var broken map[map[int]string]bool
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//
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// A map can only be compared to nil value
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// _ = dict == nil
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}
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