Ichthyostega 8437710232 BufferProvider: research how to build a policy with callbacks ...

While it is trivially simple to define some struct with callback functions,
such a definition turns out to be obnoxiously complex and hard to read in pracice,
thereby nullifying any benefit from the shorthand λ-based notation.

This kind of problem with the readability at client-side is quite common
when using callbacks for a policy-based design. To overcome this difficutly,
it would be necessary to define the policy and the callbacks in one
succinct builder expression. Unfortunately such a builder syntax
typically requires to write a lot of boilerplate template code.

After several failed experiments, I have found a bold new way to
exploit features of C++20 in conjunction with a macro, allowing
to generate a suitable data record directly form an C++ expression.

2026-02-26 02:20:51 +01:00

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