slice

Documentation

Overview

Package slice provides some assistant functions about slice.

Index

• func Contains[E comparable](vs []E, v E) bool
• func Reverse[E any](vs []E)
• func ToInterfaces[T any](vs []T) []interface{}

Examples

• Contains
• Reverse
• ToInterfaces

Functions

func Contains

func Contains[E comparable](vs []E, v E) bool

Contains reports whether vs contains v.

Example

fmt.Println(Contains([]int{1, 2, 3}, 0))
fmt.Println(Contains([]int{1, 2, 3}, 1))
fmt.Println(Contains([]int{1, 2, 3}, 2))
fmt.Println(Contains([]int{1, 2, 3}, 3))
fmt.Println(Contains([]int{1, 2, 3}, 4))

Output:

false
true
true
true
false

func Reverse

func Reverse[E any](vs []E)

Reverse reverses the elements in the slice.

Example

vs1 := []string{"a", "b", "c", "d"}
Reverse(vs1)
fmt.Println(vs1)

vs2 := []int{1, 2, 3, 4}
Reverse(vs2)
fmt.Println(vs2)

Output:

[d c b a]
[4 3 2 1]

func ToInterfaces

func ToInterfaces[T any](vs []T) []interface{}

ToInterfaces converts []any to []interface{}.

Example

ss := []string{"a", "b", "c"}
vs1 := ToInterfaces(ss)
fmt.Printf("%T: %v\n", vs1, vs1)

ints := []int{1, 2, 3}
vs2 := ToInterfaces(ints)
fmt.Printf("%T: %v\n", vs2, vs2)

Output:

[]interface {}: [a b c]
[]interface {}: [1 2 3]