C++ function naming: how to deal with overloaded functions and functions with the same name

The naming rules for overloaded functions and functions with the same name are different. Overloaded functions are named by distinguishing parameter types, while functions with the same name are grouped by namespaces. Practical case: Overloaded string comparison functions use different parameter types to differentiate, while abs() functions in different namespaces use namespace abbreviations or prefixes to group them. To avoid naming conflicts, it is recommended to carefully consider function names, use namespaces to isolate different modules, and avoid ambiguous or duplicate names. Also, keep names short and descriptive, follow the CamelCase naming convention, and avoid using special symbols.

C Function naming: Dealing with overloaded functions and functions with the same name

Understanding overloaded functions and functions with the same name

Overloaded functions are functions with the same name but different parameter types. Functions with the same name are functions with the same name but in different namespaces.

Naming rules for overloaded functions

• Determine the purpose of the function and the differences between different versions.
• Use meaningful names that clearly indicate the purpose of the function.
• Distinguish parameter types as part of the function name.

Practical case: overloading string comparison function

bool compareIgnoreCase(const string& s1, const string& s2);
bool compareCaseInsensitive(const string& s1, const string& s2);

Naming rules for functions with the same name

• Group by namespace.
• Use namespace abbreviation or prefix, for example:

namespace math {
  int abs(int n);
}

namespace geometry {
  int abs(int n);
}

Practical case: abs() function in different namespaces

using namespace math;  // 使用 math 命名空间

cout << abs(-5) << endl;  // 输出 5

Avoid function naming conflicts

• Think carefully about function names and collaborate with team members.
• Use namespace scope to isolate functions from different modules.
• Avoid using ambiguous or duplicate names.

Other Naming Tips

• Keep function names short and descriptive.
• Follow the CamelCase naming convention (lowercase first word, uppercase first letter of subsequent words).
• Avoid using underscores or special symbols.

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