In this article we will learn about some of the frequently asked GO programming questions in technical like “go maps” Code Answer’s. When creating scripts and web applications, error handling is an important part. If your code lacks error checking code, your program may look very unprofessional and you may be open to security risks. Error or stack handling on go was simple and easy. An error message with filename, line number and a message describing the error is sent to the browser. This tutorial contains some of the most common error checking methods in GO. Below are some solution about “go maps” Code Answer’s.
create map golang
xxxxxxxxxx
1
//map in go is a built in type implementaiton of has table
2
//create a empty map
3
myMap := make(map[string]string)
4
//insert key-value pair in map
5
myMap["key"] = "value"
6
//read from map
7
value, ok := myMap["key"]
8
//delete from map
9
delete(myMap, "key")
go add to map
xxxxxxxxxx
1
m := make(map[string]int)
2
m["numberOne"] = 1
3
m["numberTwo"] = 2
go maps
xxxxxxxxxx
1
var m map[string]int
2
m = make(map[string]int)
3
m["key"] = 42
4
fmt.Println(m["key"])
5
6
delete(m, "key")
7
8
elem, ok := m["key"] // test if key "key" is present and retrieve it, if so
9
10
// map literal
11
var m = map[string]Vertex{
12
"Bell Labs": {40.68433, -74.39967},
13
"Google": {37.42202, -122.08408},
14
}
15
16
// iterate over map content
17
for key, value := range m {
18
}
go maps
xxxxxxxxxx
1
type Vertex struct {
2
Lat, Long float64
3
}
4
5
var m map[string]Vertex
6
7
func main() {
8
m = make(map[string]Vertex)
9
m["Bell Labs"] = Vertex{
10
40.68433, -74.39967,
11
}
12
fmt.Println(m["Bell Labs"])
13
}
what is the use of map in golang
xxxxxxxxxx
1
Search Results
2
Featured snippet from the web
3
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.
