No need. Please read this first. Continue reading “C++ lvalues, rvalues, glvalues, xvalues, making you leave the party?”
C++ modern but non-existent code
The “crown jewel” of the post first. I use standard C++ and this macro :
1 2 3 4 5 6 7 | #ifndef DBJ_REMOVE // guaranteed no evaluation // guaranteed zero bytes overhead // can be placed in any scope #define DBJ_REMOVE(...) \ static_assert( (noexcept(__VA_ARGS__),true) ) #endif |
Any number of any legal arguments works. In or out of functions. In or out a namespace. Yes it is a macro too.
That is runtime zero cost. noexcept is compile time affair. And since the result is cast to “nothing” aka void that compiles to exactly 0 bytes.
The philosophy
How to avoid implicit conversion in C++
nothing_but<T>
Value Handle to Avoid Implicit Conversions in standard C++
Introduction
“… C++ is not a bad language per se. It’s just, well kinda suffers from bloat. In the words of Richard E. Gooch, “It seduces the programmer, making it much easier to write bloatware“…”
The source
Simple matrix for the rest of us
The Introduction
“…There are issues such as dynamic memory allocation in C/C++, which is forbidden, under the DO-178B standard, in safety-critical embedded avionics code…”
The source
Before knowing the above, the other day I have developed a handy little template to hold and provide, a plain 2d array, completely on the stack (aka the “matrix”).
It is also fully “compile time capable” with the full static internal presentation.
It is very handy to gently enforce company-wide C++ policies and to give some useful functionality in return. I am calling this approach “almost a pod”. Continue reading “Simple matrix for the rest of us”
C++ Inheritance easily grows out of control
Interface inheritance is good.
Update
Just stumbled upon this excellent and succinct short text on how not to use inheritance. In C++ in particular, and I am adding: in general.
That text is precisely about differences v.s. the Objective-C, but it is priceless if and when you spot the growth of the weed of inheritance. Continue reading “C++ Inheritance easily grows out of control”
