1 files changed, 17 insertions, 0 deletions
diff --git a/lang/zig/errdefer.zig b/lang/zig/errdefer.zig
new file mode 100644
index 0000000..812b0f7
--- /dev/null
+++ b/lang/zig/errdefer.zig
@@ -0,0 +1,17 @@
+fn createFoo(param: i32) !Foo {
+    const foo = try tryToAllocateFoo();
+    // now we have allocated foo. we need to free it if the function fails.
+    // but we want to return it if the function succeeds.
+    errdefer deallocateFoo(foo);
+
+    const tmp_buf = allocateTmpBuffer() orelse return error.OutOfMemory;
+    // tmp_buf is truly a temporary resource, and we for sure want to clean it up
+    // before this block leaves scope
+    defer deallocateTmpBuffer(tmp_buf);
+
+    if (param > 1337) return error.InvalidParam;
+
+    // here the errdefer will not run since we're returning success from the function.
+    // but the defer will run!
+    return foo;
+}