* Each function now needs an accompanying struct
* The function header does not list the parameter names or types
Both are housekeeping aspects which could probably be handled with macros
(waves hands airily).
* When structs are passed by-value as is the case here, it can mean
copying the struct, an extra overhead
No more so than copying the argument list in the first place, surely.
* It can also mean construction an argument list in memory, rather than
passing arguments efficiently in registers
That’s an implementation issue.
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