lifetimes

Author: dumindu

content/en/docs/c3.lifetimes.md

@@ -53,8 +53,6 @@ fn take_str(x: &'static str) {
 
 ## Usage
 
-Lifetimes are denoted with an apostrophe. By convention, a lowercase letter is used for naming. Usually **starts with** `'a` and **follows alphabetic order** when we need to add **multiple lifetime** annotations.
-
 When using references,
 
 ### 01. On Function Declaration
@@ -161,15 +159,11 @@ impl<F> Struct<F> where for<'a> F: FnOnce(&'a Type) { fn x(&self) -> &F { &self.
 
 ## Lifetime Elision
 
-As I mentioned earlier, in order to make **common patterns** more ergonomic, Rust allows lifetimes to be **elided/omitted**. This process is called **Lifetime Elision**.
-
-💡 For the moment Rust supports Lifetime Elisions only on `fn` definitions. But in the future, it will support for `impl` headers as well.
-
 Lifetime annotations of `fn` definitions can be elided  
 if its **parameter list** has either,
 
 * **only one input parameter passes by reference**.
-* a parameter with **either** `&self` **or** **&mut self** reference.
+* a parameter with **either `&self` or `&mut self` reference**.
 
 ```rust
 fn triple(x: &u64) -> u64 { // Only one input parameter passes by reference
@@ -220,22 +214,6 @@ fn main() {
 > * For all other cases, we have to write lifetime annotations manually.
 
 
-## `'static` Annotations
-
-`'static` lifetime annotation is a **reserved** lifetime annotation. These **references are valid for the entire program**. They are saved in the data segment of the binary and the data referred to will never go out of scope.
-
-```rust
-static N: i32 = 5; // A constant with 'static lifetime
-
-let a = "Hello, world."; // a: &'static str
-
-
-fn index() -> &'static str { // No need to mention <'static> ; fn index ̶<̶'̶s̶t̶a̶t̶i̶c̶>̶ 
-	"Hello, world!"
-}
-```
-
-
 ## Few more examples about the usage of Rust lifetimes.
 
 ```rust