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Edited the static.md

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en/src/lifetime/static.md
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@ -1,5 +1,5 @@
# &'static and T: 'static # &'static and T: 'static
`'static` is a reserved lifetime name, you might have encountered it serveral times: `'static` is a reserved lifetime name, you might have encountered it several times:
```rust ```rust
// A reference with 'static lifetime: // A reference with 'static lifetime:
let s: &'static str = "hello world"; let s: &'static str = "hello world";
@ -15,7 +15,7 @@ As a reference lifetime, `&'static` indicates the data pointed to by the referen
1、🌟🌟 There are several ways to make a variable with `'static` lifetime, two of them are stored in the read-only memory of the binary。 1、🌟🌟 There are several ways to make a variable with `'static` lifetime, two of them are stored in the read-only memory of the binary.
```rust,editable ```rust,editable
@ -32,7 +32,7 @@ fn need_static(r : &'static str) {
} }
``` ```
2、 🌟🌟🌟🌟 Another way to make `'static` lifetime is using `Box::leak` 2, 🌟🌟🌟🌟 Another way to make `'static` lifetime is using `Box::leak`
```rust,editable ```rust,editable
#[derive(Debug)] #[derive(Debug)]
struct Config { struct Config {
@ -59,7 +59,7 @@ fn main() {
} }
``` ```
3、 🌟 `&'static` only indicates that the data can live forever, not the reference. The latter one will be constrained by its scope. 3, 🌟 `&'static` only indicates that the data can live forever, not the reference. The latter one will be constrained by its scope.
```rust,editable ```rust,editable
fn main() { fn main() {
{ {
@ -75,7 +75,7 @@ fn main() {
} }
``` ```
4、 `&'static` can be coerced to a shorter lifetime. 4, `&'static` can be coerced to a shorter lifetime.
**Example** **Example**
```rust,editable ```rust,editable
@ -108,9 +108,9 @@ fn main() {
## T: 'static ## T: 'static
As a trait bound, it means the type does not contain any non-static references. Eg. the receiver can hold on to the type for as long as they want and it will never become invalid until they drop it. As a trait bound, it means the type does not contain any non-static references. Eg. the receiver can hold on to the type for as long as they want and it will never become invalid until they drop it.
It's important to understand this means that any owned data always passes a `'static `lifetime bound, but a reference to that owned data generally does no。 It's important to understand this means that any owned data always passes a `'static `lifetime bound, but a reference to that owned data generally does no.
5、🌟🌟 5,🌟🌟
```rust,editable ```rust,editable
/* Make it work */ /* Make it work */
use std::fmt::Debug; use std::fmt::Debug;
@ -145,7 +145,7 @@ fn main() {
``` ```
6、🌟🌟🌟 6,🌟🌟🌟
```rust,editable ```rust,editable
use std::fmt::Display; use std::fmt::Display;