1 files changed, 34 insertions, 0 deletions
diff --git a/content/slices/prog100.go b/content/slices/prog100.go
new file mode 100644
index 0000000..1a67e79
--- /dev/null
+++ b/content/slices/prog100.go
@@ -0,0 +1,34 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"fmt"
+)
+
+// Insert inserts the value into the slice at the specified index,
+// which must be in range.
+// The slice must have room for the new element.
+func Insert(slice []int, index, value int) []int {
+	// Grow the slice by one element.
+	slice = slice[0 : len(slice)+1]
+	// Use copy to move the upper part of the slice out of the way and open a hole.
+	copy(slice[index+1:], slice[index:])
+	// Store the new value.
+	slice[index] = value
+	// Return the result.
+	return slice
+}
+
+func main() {
+	slice := make([]int, 10, 20) // Note capacity > length: room to add element.
+	for i := range slice {
+		slice[i] = i
+	}
+	fmt.Println(slice)
+	slice = Insert(slice, 5, 99)
+	fmt.Println(slice)
+	// OMIT
+}