From 9c285b0341fcf5ce9e15821da20727a313624497 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Wed, 14 Oct 2020 20:02:03 +0200
Subject: [PATCH] Style: default over new

---
 docs/dev/style.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/docs/dev/style.md b/docs/dev/style.md
index 59067d2346..435de63e3b 100644
--- a/docs/dev/style.md
+++ b/docs/dev/style.md
@@ -186,6 +186,31 @@ impl Person {
 }
 ```
 
+## Constructors
+
+Prefer `Default` to zero-argument `new` function
+
+```rust
+// Good
+#[derive(Default)]
+struct Foo {
+    bar: Option<Bar>
+}
+
+// Not as good
+struct Foo {
+    bar: Option<Bar>
+}
+
+impl Foo {
+    fn new() -> Foo {
+        Foo { bar: None }
+    }
+}
+```
+
+Prefer `Default` even it has to be implemented manually.
+
 ## Avoid Monomorphization
 
 Rust uses monomorphization to compile generic code, meaning that for each instantiation of a generic functions with concrete types, the function is compiled afresh, *per crate*.