Iterate a map with range

suggest change

Iteration order is not specified. Go randomizes the order of iteration on purpose so that code doesn’t incorrectly rely on specific order.

Iterate both keys and values

main.go

	people := map[string]int{
		"john": 30,
		"jane": 29,
		"mark": 11,
	}

	for key, value := range people {
		fmt.Printf("key: %s, value: %d\n", key, value)
	}

Output:

key: john, value: 30
key: jane, value: 29
key: mark, value: 11

Iterate just keys

main.go

	people := map[string]int{
		"john": 30,
		"jane": 29,
		"mark": 11,
	}

	for key := range people {
		fmt.Printf("key: %s\n", key)
	}

Output:

key: john
key: jane
key: mark

Iterate just values

main.go

	people := map[string]int{
		"john": 30,
		"jane": 29,
		"mark": 11,
	}

	for _, value := range people {
		fmt.Printf("value: %d\n", value)
	}

Output:

value: 30
value: 29
value: 11

Found a mistake? Have a question or improvement idea? Let me know.

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