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29 lines
692 B
Markdown
29 lines
692 B
Markdown
# Considering Correctness
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## Avoid Typeless Interfaces
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Bad Idea:
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```cpp
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std::string find_file(const std::string &base, const std::string &pattern);
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```
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Better Idea:
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```cpp
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std::filesystem::path find_file(const std::filesystem::path &base, const std::regex &pattern);
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```
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The above is better but still suffers from having implicit conversions from `std::string` to `std::filesystem::path` and back.
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Consider using a typesafe library like
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* https://foonathan.net/type_safe/
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* https://github.com/rollbear/strong_type
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* https://github.com/joboccara/NamedType
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Note that stronger typing can also allow for more compiler optimizations.
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* [Sorting in C vs C++](Sorting in C vs C++.pdf)
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