From 599250092ba58f22a81c0f9c283528f47469a9a2 Mon Sep 17 00:00:00 2001
From: Pavel Tisnovsky <ptisnovs@redhat.com>
Date: Mon, 13 Jul 2020 10:48:08 +0200
Subject: [PATCH] Example #19: Improper combination of more stream manipulators

---
 lesson7/lazy_streams/19_combinations_error.go | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 lesson7/lazy_streams/19_combinations_error.go

diff --git a/lesson7/lazy_streams/19_combinations_error.go b/lesson7/lazy_streams/19_combinations_error.go
new file mode 100644
index 0000000..b6a7dcf
--- /dev/null
+++ b/lesson7/lazy_streams/19_combinations_error.go
@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+	"github.com/wesovilabs/koazee"
+)
+
+func printInt(x int) {
+	fmt.Printf("%d\n", x)
+}
+
+func doubleValue(x int) int {
+	return x * 2
+}
+
+func negate(x int) int {
+	return -x
+}
+
+func evenValue(x int) bool {
+	return x%2 == 0
+}
+
+func divisibleBy3(x int) bool {
+	return x%3 == 0
+}
+
+func main() {
+	values1 := []int{1, 2, 3}
+	fmt.Printf("input #1: %v\n", values1)
+
+	stream1 := koazee.StreamOf(values1).
+		Filter(evenValue).
+		Filter(divisibleBy3).
+		Map(negate).
+		Map(doubleValue)
+	stream1.ForEach(printInt).Do()
+}