mirror of
https://github.com/jimeh/rands.git
synced 2026-02-19 11:26:38 +00:00
Jim Myhrberg
a141938394
Add equivalent to `Shuffle` function from `math/rand` and `math/rand/v2` packages, but based on randomness from `crypto/rand` package. This allows cryptographically secure shuffling of data. Also add `ShuffleSlice` function that shuffles a slice of any type. BREAKING CHANGE: Minimum required Go version is now 1.18 due the `ShuffleSlice` using generics.
33 lines
516 B
Go
33 lines
516 B
Go
package rands_test
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
|
|
"github.com/jimeh/rands"
|
|
)
|
|
|
|
func ExampleShuffle() {
|
|
numbers := []int{1, 2, 3, 4, 5}
|
|
|
|
err := rands.Shuffle(len(numbers), func(i, j int) {
|
|
numbers[i], numbers[j] = numbers[j], numbers[i]
|
|
})
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
fmt.Println(numbers) // => [2 4 5 1 3]
|
|
}
|
|
|
|
func ExampleShuffleSlice() {
|
|
mixed := []any{1, "two", 3.14, true, nil}
|
|
|
|
err := rands.ShuffleSlice(mixed)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
fmt.Println(mixed) // => [3.14 true 1 two <nil>]
|
|
}
|