go maps

//map in go is a built in type implementaiton of has table
//create a empty map
myMap := make(map[string]string)
//insert key-value pair in map
myMap["key"] = "value"
//read from map
value, ok := myMap["key"]
//delete from map
delete(myMap, "key")

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Awgiedawgie 440215 points

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In Go language, a map is a powerful, ingenious, and a versatile data structure. Golang Maps is a collection of unordered pairs of key-value. It is widely used because it provides fast lookups and values that can retrieve, update or delete with the help of keys. It is a reference to a hash table.

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4 (2 Votes)

Awgiedawgie 440215 points

                                    var m map[string]int
m = make(map[string]int)
m[&quot;key&quot;] = 42
fmt.Println(m[&quot;key&quot;])

delete(m, &quot;key&quot;)

elem, ok := m[&quot;key&quot;] // test if key &quot;key&quot; is present and retrieve it, if so

// map literal
var m = map[string]Vertex{
    &quot;Bell Labs&quot;: {40.68433, -74.39967},
    &quot;Google&quot;:    {37.42202, -122.08408},
}

// iterate over map content
for key, value := range m {
}

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4.29

Phoenix Logan 186120 points

                                    type Vertex struct {
	Lat, Long float64
}

var m map[string]Vertex

func main() {
	m = make(map[string]Vertex)
	m[&quot;Bell Labs&quot;] = Vertex{
		40.68433, -74.39967,
	}
	fmt.Println(m[&quot;Bell Labs&quot;])
}

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4.29 (7 Votes)

Awgiedawgie 440215 points

                                    m := make(map[string]int)
m[&quot;numberOne&quot;] = 1
m[&quot;numberTwo&quot;] = 2

Thank you! 2

4 (2 Votes)

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