update lifetime/basic.md

src/lifetime/basic.md

@@ -1,32 +1,4 @@
-## 生命周期消除
-
-```rust
-fn print(s: &str);                                      // elided
-fn print<'a>(s: &'a str);                               // expanded
-
-fn debug(lvl: usize, s: &str);                          // elided
-fn debug<'a>(lvl: usize, s: &'a str);                   // expanded
-
-fn substr(s: &str, until: usize) -> &str;               // elided
-fn substr<'a>(s: &'a str, until: usize) -> &'a str;     // expanded
-
-fn get_str() -> &str;                                   // ILLEGAL
-
-fn frob(s: &str, t: &str) -> &str;                      // ILLEGAL
-
-fn get_mut(&mut self) -> &mut T;                        // elided
-fn get_mut<'a>(&'a mut self) -> &'a mut T;              // expanded
-
-fn args<T: ToCStr>(&mut self, args: &[T]) -> &mut Command                  // elided
-fn args<'a, 'b, T: ToCStr>(&'a mut self, args: &'b [T]) -> &'a mut Command // expanded
-
-fn new(buf: &mut [u8]) -> BufWriter;                    // elided
-fn new(buf: &mut [u8]) -> BufWriter<'_>;                // elided (with `rust_2018_idioms`)
-fn new<'a>(buf: &'a mut [u8]) -> BufWriter<'a>          // expanded
-```
-
-**Lifetimes**
-
+## Lifetime
 1. 🌟
 ```rust,editable
 /* Make it work */