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How to create Slice using Make function in Golang?

Slice can be created using the built-in function make. When you use make, one option you have is to specify the length of the slice. When you just specify the length, the capacity of the slice is the same.

Example

package main

import (
	"fmt"
	"reflect"
)

func main() {
	var intSlice = make([]int, 10)        // when length and capacity is same
	var strSlice = make([]string, 10, 20) // when length and capacity is different

	fmt.Printf("intSlice \tLen: %v \tCap: %v\n", len(intSlice), cap(intSlice))
	fmt.Println(reflect.ValueOf(intSlice).Kind())

	fmt.Printf("strSlice \tLen: %v \tCap: %v\n", len(strSlice), cap(strSlice))
	fmt.Println(reflect.ValueOf(strSlice).Kind())
}

Output

intSlice        Len: 10         Cap: 10
slice
strSlice        Len: 10         Cap: 20
slice
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