func Unique(_ context.Context, args ...core.Value) (core.Value, error) {
	err := core.ValidateArgs(args, 1, 1)
	if err != nil {
		return values.None, err
	}
	err = core.ValidateType(args[0], types.Array)
	if err != nil {
		return values.None, err
	}
	arr := args[0].(*values.Array)
	if arr.Length() == 0 {
		return values.NewArray(0), nil
	}
	return ToUniqueArray(arr), nil
}
Unique returns all unique elements from a given array.
@param array (Array) - Target array.
@returns (Array) - New array without duplicates.
package arrays
import (
	"context"
	"github.com/MontFerret/ferret/pkg/runtime/core"
	"github.com/MontFerret/ferret/pkg/runtime/values"
	"github.com/MontFerret/ferret/pkg/runtime/values/types"
)