Nested requirements are used to specify requirements on type parameters.
Typically, you use a requires expressions to define a concept, but they can also be used as a standalone feature when a compile-time predicate is required. Therefore, use cases for requires expression can be a requires clause,
constexpr if. I will write in my next post about these special use cases of requires expressions.
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Standard Seminars (English/German)
Here is a compilation of my standard seminars. These seminars are only meant to give you a first orientation.