Example #7: Contains method

lesson7/lazy_streams/07_contains.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"fmt"
+	"github.com/wesovilabs/koazee"
+)
+
+func main() {
+	values := []int{1, 2, 3, 4, 5}
+	fmt.Printf("input: %v\n", values)
+
+	stream := koazee.StreamOf(values)
+
+	p1, _ := stream.Contains(2)
+	fmt.Printf("contains 2? %v\n", p1)
+
+	p2, _ := stream.Contains(42)
+	fmt.Printf("contains 42? %v\n", p2)
+
+	fmt.Println()
+
+	words := []string{"one", "two", "three", "four", "five"}
+	fmt.Printf("words: %v\n", words)
+
+	stream = koazee.StreamOf(words)
+
+	p3, _ := stream.Contains("one")
+	fmt.Printf("contains 'one'? %v\n", p3)
+
+	p4, e1 := stream.Contains("ten")
+	fmt.Printf("contains 'ten'? %v\n", p4)
+	fmt.Printf("error %v\n", e1)
+
+	p4, e2 := stream.Contains(42)
+	fmt.Printf("contains 42? %v\n", p4)
+	fmt.Printf("error %v\n", e2)
+}