CCP Notes

- scope resolution operator
- type inference

content/C/CPP Notes.md

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+---
+Author:
+  - Xinyang YU
+Author Profile:
+  - https://linkedin.com/in/xinyang-yu
+tags:
+  - cpp
+Creation Date: 2024-12-14, 20:50
+Last Date: 2024-12-14T21:03:15+08:00
+References: 
+draft: 
+description: 
+---
+
+## Scope Resolution Operator
+---
+- Represented by `::`, it is used to access **global variables** (when there is a conflict with local variables), **namespace members**, **nested classes**, and **static members** (though static members are just one common use case)
+
+>[!question] How is it different from `.`?
+> `.` is used to access non-static members of an **object** (instance) of a class.
+
+>[!question] How is it different from Java's `::`?
+> In **Java**, `::` is a **method reference operator** used for referencing methods or constructors in a more functional programming style.
+
+
+## Type Inference
+---
+```cpp
+auto variable_name = expression;
+```
+
+- The [[Language Processors#Compiler]] is able to figure out the [[Datatype]] of `expression` during compilation automatically