How to Create a map in Golang 1.20
0In this video we are going to generate source code for the GoLang Program, How to Create a map using chatGPT.
After generating we will verify and run the generated code.
IMPORTANT NOTE on SOURCE CODE: only source code that are acceptable by the youtube description box will be displayed.
##############SOURCE CODE#########################
package main
import "fmt"
func main() {
// Declare a map of string keys and integer values
m := make(map[string]int)
// Add some key-value pairs to the map
m["one"] = 1
m["two"] = 2
m["three"] = 3
// Print the contents of the map
fmt.Println(m)
// Access the value of a key
fmt.Println("The value of 'two' is:", m["two"])
// Check if a key exists in the map
if val, ok := m["four"]; ok {
fmt.Println("The value of 'four' is:", val)
} else {
fmt.Println("'four' is not a key in the map")
}
}
Below is the explanation for the program:
In this program, we first declare a map of string keys and integer values using the make() function and the syntax m := make(map[string]int).
We then add some key-value pairs to the map using the syntax m[key] = value.
We then print the contents of the map using the fmt.Println() function.
Next, we access the value of a key in the map using the syntax m[key].
In this case, we print the value of the key "two" using the statement fmt.Println("The value of 'two' is:", m["two"]).
Finally, we check if a key exists in the map using the syntax val, ok := m[key].
The ok variable will be true if the key exists in the map and false otherwise.
If the key exists, we print its value using the statement fmt.Println("The value of 'four' is:", val). If the key does not exist, we print a message saying so.
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