How to create and use nested maps in Golang 1.20
0In this video we are going to generate source code for the GoLang Program, How to create and use nested maps 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() {
// Create a nested map of string keys and int values
inventory := map[string]map[string]int{
"apples": {
"quantity": 50,
"price": 2,
},
"bananas": {
"quantity": 20,
"price": 1,
},
"oranges": {
"quantity": 30,
"price": 3,
},
}
// Access and modify the nested map
inventory["apples"]["quantity"] += 10
inventory["bananas"]["price"] = 2
// Iterate over the nested map
for name, item := range inventory {
fmt.Printf("Item: %s\n", name)
for key, value := range item {
fmt.Printf("%s: %d\n", key, value)
}
fmt.Println("--------------------")
}
}
##############END OF SOURCE CODE#########################
Below is the explanation for the program:
In this program, we create a nested map of string keys and int values called inventory.
The outer map has string keys that correspond to the names of different items,
and the values of the outer map are themselves maps with string keys and int values that correspond to the quantity and price of each item.
We then access and modify the nested map by incrementing the quantity of apples by 10 and changing the price of bananas to 2.
Finally, we use a nested loop to iterate over the keys and values of the nested map.
The outer loop iterates over the keys of the outer map, which are the names of the items.
For each item, the inner loop iterates over the keys and values of the inner map,
which are the quantity and price of the item.
The program prints the name of each item and its quantity and price, separated by dashes.
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