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How to compare slices, structs and maps in Golang?
The reflect package in Go provides a very important function called DeepEqual() which can be used to compare composite types. The DeepEqual() function is used when we want to check if two data types are "deeply equal".
Comparing slices
Example 1
Consider the code shown below
package main
import (
"fmt"
"reflect"
)
func main() {
sl := []int{1, 2, 3}
sl1 := []int{1, 2, 3}
fmt.Println(reflect.DeepEqual(sl, sl1))
}Output
If we run the command go run main.go on the above code, then we will get the following output in the terminal.
true
Comparing maps
Example 2
Consider the code shown below.
package main
import (
"fmt"
"reflect"
)
func main() {
m1 := make(map[string]int)
m1["rahul"] = 10
m1["mukul"] = 11
m2 := make(map[string]int)
m2["rahul"] = 10
m2["mukul"] = 11
fmt.Println(reflect.DeepEqual(m1, m2))
}Output
If we run the command go run main.go on the above code, then we will get the following output in the terminal.
true
Comparing structs
Example 3
Consider the code shown below.
package main
import (
"fmt"
"reflect"
)
type Person struct {
name string
age int
}
func main() {
p1 := Person{name: "TutorialsPoint", age: 10}
p2 := Person{name: "TutorialsPoint", age: 10}
fmt.Println(reflect.DeepEqual(p1, p2))
}Output
If we run the command go run main.go on the above code, then we will get the following output in the terminal.
true
Updated on: 21-Feb-2022
1K+ Views
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