Added info on using enable_observer_from_this

cschreib · cschreib · commit df317e77437c · 2021-11-11T17:16:06.000Z
diff --git a/README.md b/README.md
@@ -83,6 +83,8 @@ int main() {
 }
 ```
 
+As with `std::shared_ptr`/`std::weak_ptr`, if you need to obtain an observer pointer to an object when you only have `this` (i.e., from a member function), you can inherit from `oup::enable_observer_from_this<T>` to gain access to the `observer_from_this()` member function. This function will return a valid observer pointer as long as the object is owned by a unique or sealed pointer, and will return `nullptr` in all other cases.
+
 
 ## Limitations
 

Original file line number	Diff line number	Diff line change
`@@ -83,6 +83,8 @@ int main() {`
`83`	`83`	`}`
`84`	`84`	```
`85`	`85`
	`86`	+As with `std::shared_ptr`/`std::weak_ptr`, if you need to obtain an observer pointer to an object when you only have `this` (i.e., from a member function), you can inherit from `oup::enable_observer_from_this<T>` to gain access to the `observer_from_this()` member function. This function will return a valid observer pointer as long as the object is owned by a unique or sealed pointer, and will return `nullptr` in all other cases.
	`87`	`+`
`86`	`88`
`87`	`89`	`## Limitations`
`88`	`90`