strings: add function to append uniq values to slice of strings

The AppendUniq will append a string to slice only if the same string
its not already exist.  The string is compared in case insensitive manner.

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/strings/strings_example_test.go b/lib/strings/strings_example_test.go
index d661232a..df2f5125 100644
--- a/lib/strings/strings_example_test.go
+++ b/lib/strings/strings_example_test.go
@@ -8,6 +8,17 @@ import (
 	"fmt"
 )
 
+func ExampleAppendUniq() {
+	in := []string{"a", "", "b", "c"}
+	vals := []string{"b", "", "C", "d"}
+
+	in = AppendUniq(in, vals...)
+
+	fmt.Println(in)
+	// Output:
+	// [a  b c C d]
+}
+
 func ExampleCountMissRate() {
 	src := []string{"A", "B", "C", "D"}
 	tgt := []string{"A", "B", "C", "D"}