From 15a42f1f350b7a391ba0317170139f1ce47ff9ef Mon Sep 17 00:00:00 2001
From: Alexander Medvednikov <alexander@medvednikov.com>
Date: Mon, 12 Aug 2019 14:41:34 +0300
Subject: [PATCH] array.clone()

---
 vlib/builtin/array.v      | 11 +++++++++++
 vlib/builtin/array_test.v |  8 ++++++++
 2 files changed, 19 insertions(+)

diff --git a/vlib/builtin/array.v b/vlib/builtin/array.v
index 5c7d38ff54..2f1595d177 100644
--- a/vlib/builtin/array.v
+++ b/vlib/builtin/array.v
@@ -208,6 +208,17 @@ pub fn (a array) reverse() array {
 	return arr
 }
 
+pub fn (a array) clone() array {
+	arr := array {
+		len: a.len
+		cap: a.cap
+		element_size: a.element_size
+		data: malloc(a.cap * a.element_size)
+	}
+	C.memcpy(arr.data, a.data, a.cap * a.element_size) 
+	return arr 
+} 
+
 //pub fn (a []int) free() {
 pub fn (a array) free() {
 	//if a.is_slice {
diff --git a/vlib/builtin/array_test.v b/vlib/builtin/array_test.v
index f3c524bbbe..888b9b04a0 100644
--- a/vlib/builtin/array_test.v
+++ b/vlib/builtin/array_test.v
@@ -190,4 +190,12 @@ fn test_mut_slice() {
 	assert n[2] == 777 
 	println(n)
 }
+
+fn test_clone() {
+	nums := [1, 2, 3, 4, 100] 
+	nums2 := nums.clone()  
+	assert nums2.len == 5 
+	assert nums2.str() == '[1, 2, 3, 4, 100]' 
+	assert nums.slice(1, 3).str() == '[2, 3]' 
+}