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Is it possible to concoct a compile time assert in Swift like static_assert in C++? Maybe some way to exploit type constraints on generics to force a compiler break?
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assert(f != must be done at run time. However, an assertion that tests the value of a constant expression, such as the size or offset of a structure member, can be done at compile time.
The _Static_assert keyword, and the static_assert macro, both test a software assertion at compile time. They can be used at global or function scope. In contrast, the assert macro and _assert and _wassert functions test a software assertion at runtime and incur a runtime cost.
This has been accepted into Swift as of version 4.2, here is the Swift evolution for the proposal.
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