aboutsummaryrefslogtreecommitdiff
path: root/docs
diff options
context:
space:
mode:
authorAleksey Kladov <[email protected]>2020-10-14 19:02:03 +0100
committerAleksey Kladov <[email protected]>2020-10-14 19:02:03 +0100
commit9c285b0341fcf5ce9e15821da20727a313624497 (patch)
tree2e73cabbf233019601f8f19c8c38625f10305ca8 /docs
parent84d6cdef86dfe1054ecafaedfddbf90a2b3a469d (diff)
Style: default over new
Diffstat (limited to 'docs')
-rw-r--r--docs/dev/style.md25
1 files changed, 25 insertions, 0 deletions
diff --git a/docs/dev/style.md b/docs/dev/style.md
index 59067d234..435de63e3 100644
--- a/docs/dev/style.md
+++ b/docs/dev/style.md
@@ -186,6 +186,31 @@ impl Person {
186} 186}
187``` 187```
188 188
189## Constructors
190
191Prefer `Default` to zero-argument `new` function
192
193```rust
194// Good
195#[derive(Default)]
196struct Foo {
197 bar: Option<Bar>
198}
199
200// Not as good
201struct Foo {
202 bar: Option<Bar>
203}
204
205impl Foo {
206 fn new() -> Foo {
207 Foo { bar: None }
208 }
209}
210```
211
212Prefer `Default` even it has to be implemented manually.
213
189## Avoid Monomorphization 214## Avoid Monomorphization
190 215
191Rust 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*. 216Rust 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*.