[−][src]Macro sugars::cow
Create new Cow
type.
It has 3 ways to use: auto, borrowed and owned.
- Auto: Uses the
Cow::from
in the passed expression - Borrowed: Uses
Cow::Borrowed
in the passed expression - Owned: Uses
Cow::Owned
in the passed expression
Examples
use std::borrow::Cow; use sugars::cow; let s = String::from("Hello"); let auto = cow!(&s); let borrowed = cow!(borrow s); let owned: Cow<'_, String> = cow!(own String::from("Owned"));
use std::borrow::Cow; use sugars::cow; let s = String::from("Help"); let expected: Cow<_> = Cow::Borrowed(&s); let test: Cow<_> = cow!(&s); assert_eq!(expected, test);