What would the C++ program look like ideally

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Ideally, programs are completely static (compile-time) type-safe. Unfortunately, this is impossible. Problem areas include:

unions

casts (type conversion)

array decay

range errors

narrowing conversions

Note

These areas are sources of serious errors (e.g., crashes and security breaches). We strive to provide alternative technologies.

Enforcement

For individual programs, it is necessary and feasible to prohibit, restrict, or examine individual problem classes separately. We also offer alternatives, such as:

unions -- use variant (in C++17)

Union--using C++17 variant

casts -- minimize their use; templates can help

Type conversion--minimize their use, templates can help

array decay -- use span (from the GSL)

Array Destruction--Use span(from GSL)

range errors -- use span

Range Crops-Use span

narrowing conversions -- minimize their use and use narrow or narrow_cast (from the GSL) where they are necessary

Narrowing conversions-Minimize the use of type conversions and use narrow or narrow_cast when necessary (from GSL)

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