C++ Coding Standards

When reviewing or generating C++ code, follow these rules:

File Naming

Source files: snake_case or PascalCase with
```
.cpp
```
extension (e.g.,
```
user_service.cpp
```
or
```
UserService.cpp
```
)
Header files: Same base name with
```
.h
```
,
```
.hpp
```
, or
```
.hxx
```
extension
Template files:
```
.tpp
```
or
```
.inl
```
for template implementations
Be consistent within a project

cpp

#pragma once
// or
#ifndef USER_SERVICE_HPP
#define USER_SERVICE_HPP
#endif

Namespaces: all_lowercase or snake_case (e.g.,
```
myproject
```
,
```
data_processing
```
)
Nested namespaces: Use C++17 syntax when possible (e.g.,
```
namespace project::utils {}
```
)
Avoid
using namespace
in headers

Local variables: snake_case or camelCase (e.g.,
```
user_count
```
or
```
userCount
```
)
Member variables: Prefix with
```
m_
```
or suffix with
```
_
```
(e.g.,
```
m_data
```
or
```
data_
```
)
Static members: Prefix with
```
s_
```
(e.g.,
```
s_instance
```
)
Constants: UPPER_SNAKE_CASE or kPascalCase (e.g.,
```
MAX_SIZE
```
or
```
kMaxSize
```
)
Global variables: Prefix with
```
g_
```
(e.g.,
```
g_config
```
)

Free functions: snake_case or camelCase (e.g.,
```
calculate_total()
```
or
```
calculateTotal()
```
)
Member functions: camelCase or PascalCase (e.g.,
```
getUserId()
```
or
```
GetUserId()
```
)
Getters/Setters:
```
get
```
/
```
set
```
prefix or just property name (e.g.,
```
getName()
```
or
```
name()
```
)
Factory functions:
```
Create
```
,
```
Make
```
, or
```
Build
```
prefix (e.g.,
```
CreateUser()
```
)

Classes: PascalCase (e.g.,
```
UserService
```
,
```
DataProcessor
```
)
Structs: PascalCase (e.g.,
```
Point
```
,
```
Rectangle
```
)
Interfaces: PascalCase with
```
I
```
prefix optional (e.g.,
```
ISerializable
```
or
```
Serializable
```
)
Template parameters: Single letter or PascalCase (e.g.,
```
T
```
,
```
Container
```
,
```
KeyType
```
)
Enums: PascalCase for type, UPPER_SNAKE_CASE or PascalCase for values

Type aliases: PascalCase (e.g.,

using StringList = std::vector<std::string>;

)