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Development and demonstration of some cpp proposals

This repository holds code demonstration related safe numerics

Download the header-only library and use it in your project

Boost Software License. It is free for open source and close source project.

Proposals

Runtime safe numeric_cast

usage:

long l = INT_MAX + (long)1;
int i = numeric_cast<>(1);  // this will throw overflow exception!
auto b = is_convertable<int>(l);  // gives false, let you test overflow without using C++ exception

is_numeric<T>::value  // can be used as in template, inside std::enable_if<>

proposal: numeric_cast

Reuse keyword explicit to prevent implicit conversion of function parameter

proposal: Reuse keyword explicit to prevent implicit conversion of function parameter

Misc

Demonstration of has_member() type trait

It has already introduced in C++20, here there is a demo to use them has_member.h, and also collected solution from Stackoverflow, to implement in C++03, C++11.