Re:Fun with C++26 reflection: Keyword Arguments
by RossBencina on Tuesday February 11, 2025 @12:28AM
(#43009302)
In 1998 perhaps. It wouldn't be acceptable to today's C++ value-semantics crowd. Are you sure that you want to take the indirection penalty? or that the compiler will optimise it away?
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Re:Fun with C++26 reflection: Keyword Arguments
by BodkinsOdds on Tuesday February 11, 2025 @01:47AM
(#43009745)
C++ is already so reliant on optimizing `const&` parameters that I can't imagine why you wouldn't use them if you happen to be stuck with a shitty embedded toolchain (or MSVC) that can't be relied on to pass struct parameters efficiently.
Re:Fun with C++26 reflection: Keyword Arguments
by gpderetta on Tuesday February 11, 2025 @06:33AM
(#43011629)
If stack space usage is an issue, then it means that the struct is already being passed by hidden pointer (as opposed to using a register passing calling convention). Making the pointer explicit won't have any effect on performance (but it will on semantics).