chunks_example_test.go

// Copyright 2022 go-deeper. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package chunks_test

import (
	"errors"
	"fmt"

	"github.com/go-deeper/chunks"
)

func ExampleSplit() {
	slice := []int64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

	sliceChunks := chunks.Split(slice, 9)
	fmt.Println("chunks", sliceChunks)
	// Output:
	// chunks [[1 2 3 4 5] [6 7 8 9 10]]
}

func ExampleSplitFunc() {
	slice := []int64{1, 2, 3, 4, 5, 6}

	err := chunks.SplitFunc(slice, 5, func(chunk []int64) error {
		fmt.Println("chunk", chunk)
		return nil
	})
	fmt.Println("error", err)
	// Output:
	// chunk [1 2 3]
	// chunk [4 5 6]
	// error <nil>
}

func ExampleSplitFunc_withError() {
	slice := []int64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

	err := chunks.SplitFunc(slice, 4, func(chunk []int64) error {
		if chunk[0] > 5 {
			return errors.New("some error")
		}

		fmt.Println("chunk", chunk)
		return nil
	})
	fmt.Println("error", err)
	// Output:
	// chunk [1 2 3]
	// chunk [4 5 6]
	// error some error
}

func ExampleSplitFunc_withBreak() {
	slice := []int64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

	err := chunks.SplitFunc(slice, 4, func(chunk []int64) error {
		if chunk[0] > 5 {
			return chunks.ErrBreak
		}

		fmt.Println("chunk", chunk)
		return nil
	})
	fmt.Println("error", err)
	// Output:
	// chunk [1 2 3]
	// chunk [4 5 6]
	// error <nil>
}