Author Archives: Aaron Ballman

Don’t use the [[likely]] or [[unlikely]] attributes

C++20 introduced the likelihood attributes [[likely]] and [[unlikely]] as a way for a programmer to give an optimization hint to their implementation that a given code path is more or less likely to be taken. On its face, this seems … Continue reading

Posted in C/C++ | Tagged , , | 4 Comments

Member Function Ref Qualifiers

One of the lesser-known features of C++11 is the fact that you can overload your non-static member functions based on whether the implicit this object parameter is an lvalue reference or an rvalue reference by specifying a functions ref-qualifier. This … Continue reading

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Binary Operator Overloading

In C++, there are two forms of binary operator overloading you can use when designing an API. The first form is to overload the operator as a member function of the class, and the second form is to overload the … Continue reading

Posted in C/C++, Framework Design | Tagged , | 2 Comments

Implementing a four-bit adder with C++ template metaprogramming

I recently read a post by Phillip Larkson where the C preprocessor was used to implement a four-bit adder entirely at compile time. This got me wondering whether I could implement the same concept using C++ template metaprogramming. It seemed … Continue reading

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Interesting Note About the sizeof Operator

The expression used in a sizeof operator is an unevaluated expression in C and C++. This can make for some surprising situations if you are unaware of it. For instance: This code will print 12 instead of 13 because the … Continue reading

Posted in C/C++ | Tagged , | 6 Comments

MSVC Pointer Type Attributes

One of the lesser-known features of Visual Studio’s C/C++ compiler are the pointer type attributes __ptr32 and __ptr64. More information about them can be found on MSDN. These pointer type attributes are used to control the visible size and behavior … Continue reading

Posted in C/C++, Win32 | 2 Comments

Small Break in the Silence

Just because I’ve not written many posts lately doesn’t mean I’ve been silent. You should go check out the Tidbits page, it currently has over 20 little juicy pieces of information about C and C++. I’ve been using it as … Continue reading

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How Variable Argument Lists Work in C

Variable argument lists are very arcane in the world of C. You’ll see them expressed in function signatures as … at the end of the parameter list, but you may not understand how they work or what they do.

Posted in C/C++ | Tagged , , , | 11 Comments

Source Indexing SVN Repositories is Broken

Some of us spend a fair amount of time pouring through crash dumps generated on Windows. For us, the symbol server support provided by Microsoft’s debugging engines is a godsend. However, source indexing is an even bigger boon because it … Continue reading

Posted in Win32 | Tagged , , | 1 Comment

Value Types in C++11

You may have heard these terms used for various programming languages before, but I wanted to discuss them in a bit more detail since they’re a fairly fundamental concept in compilers that spill over into the way you use the … Continue reading

Posted in C/C++ | Tagged , , , | 6 Comments