Golang React JS Technology Blog

How to delete or remove element from a Map?

The built-in delete function deletes an element from a given map associated with the provided key.

Example

package main

import "fmt"

func main() {
    var employee = make(map[string]int)
    employee["Mark"] = 10
    employee["Sandy"] = 20  
    employee["Rocky"] = 30
    employee["Josef"] = 40
    
    fmt.Println(employee)
    
    delete(employee,"Mark")
    fmt.Println(employee)
}

Output

map[Rocky:30 Josef:40 Mark:10 Sandy:20]
map[Josef:40 Sandy:20 Rocky:30]
In above example delete function used to delete first element from employee map by passing key Mark as second argument in delete function.
Most Helpful This Week
Find capacity of Channel, Pointer and Slice How to Convert string to integer type in Go? Converting Int data type to Float in Go Simple function with parameters in Golang Simple function with return value in Golang Example of Fscan, Fscanf, and Fscanln from FMT Package Higher Order Functions in Golang Strip all white spaces, tabs, newlines from a string Example: Split, Join, and Equal from BYTES Package Split a string at uppercase letters using regular expression in Golang