Operation take

stream.Take

It returns a stream with elements between the given indexes (both included)

Signature

func (s stream.Stream) Take(firstIndex,lastIndex int ) (out stream.Stream)

Arguments

Name	Type	Description
firstIndex	int	First index to be taken
lastIndex	int	Last index to be taken

Output

Name	Type	Description
out	stream.Stream	It returns the stream

Errors

Type	Description
err.items-nil	The stream is nil
err.invalid-index	The indexes are not valid

Example

package main

import (
	"fmt"
	"github.com/wesovilabs/koazee"
)

type Person struct {
	FirstName string
}

var people = []*Person{
	{"Cat"},
	{"Dog"},
	{"Rat"},
	{"Canary"},
	{"Gibbon"},
}

var stream = koazee.StreamOf(people)

func main() {
	stream = stream.Take(1, 3).Do()
	for _, f := range stream.Out().Val().([]*Person) {
		fmt.Println(f.FirstName)
	}
}

Download

Benchmark

Taking the elements between positions 1 and len-1

Test Identifier	Stream Len	Speed
BenchmarkTakeNumbers1000Between1and9-4	10	326 ns/op
BenchmarkTakeNumbers1000Between1and99-4	100	323 ns/op
BenchmarkTakeNumbers1000Between1and999-4	1000	335 ns/op
BenchmarkTakeNumbers2500etween1and2499-4	5000	321 ns/op