| This library provides polyfills for different versions of the standard library. |
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| Constructs are withing namespaces for each specific version, such as "cpp17, cpp20". |
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| Polyfills will only be used when the standard version is not available. |
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| In some cases, some free functions may be provided. These functions fill gaps of classes |
| that are extended in later iterations of the standard (e.g. std::string_view::starts_with). |
| In the above example, std::string_view polyfill would live in cpp17::string_view and a free |
| function should exist in cpp20::starts_with(std::string_view, prefix). |