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Copy a file in a sane, safe and efficient way
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With C++17 the standard way to copy a file will be including the <filesystem> header and using:
bool copy_file( const std::filesystem::path& from,
const std::filesystem::path& to);
bool copy_file( c...
What does {0} mean when initializing an object?
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Not quite.. In C++, if the first member cannot be zero-constructed then {0} will not work. Ex: struct A { B b; int i; char c; }; struct B { B(); B(string); }; A a = {}; // this statement cannot be rewritten as 'A a = {0}'.
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Factory pattern in C#: How to ensure an object instance can only be created by a factory class?
...r directly? The first natural desire to use a good old "friend" keyword of C++ will fall short with C#. So we need other options...
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Array versus List: When to use which?
...d with performance, and by that I mean, "Why are you using .Net instead of C++?" you should stick with List<>. It's easier to maintain and does all the dirty work of resizing an array behind the scenes for you. (If necessary, List<> is pretty smart about choosing array sizes so it doesn'...
List of MSBuild built-in variables
...be defined by 3rd-party tools so to get the complete list I just use (in a C++ project for example): Properties -> Configuration Properties -> General -> then on the Output or Intermediate Directory drop down choose Edit... and you should see a list of all defined properties.
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Indenting #defines
...e idea of indenting pre-processor macro. I do not have a copy of the C or C++ standard though so I do not know if this is standard behavior or not.
As to whether or not it's good style. Personally, I like the idea of keeping them all to the left. It gives you a consistent place to look for the...
What's the difference between := and = in Makefile?
...CC} file.c is executed. However, if the variable GCC is reassigned i.e
GCC=c++ then the ${CC} will be converted to c++ -W after the reassignment.
Conditional assignment ?=
Conditional assignment assigns a value to a variable only if it does not have a value
Appending +=
Assume that CC = gcc ...
Boolean method naming readability
... think were missed by several other answers here
It depends if this is a C++ class method or a C function. If this is a method then it will likely be called if (user.exists()) { ... } or if (user.isExisting()) { ... }
not if (user_exists(&user)) .
This is the reason behind coding standards tha...
How to define an enumerated type (enum) in C?
... You cannot use enum strategy { ... }; in C -- you can and should do it in C++ though.
– Clearer
May 6 '14 at 7:31
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Are inline virtual functions really a non-sense?
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Virtual functions can be inlined sometimes. An excerpt from the excellent C++ faq:
"The only time an inline virtual call
can be inlined is when the compiler
knows the "exact class" of the object
which is the target of the virtual
function call. This can happen only
when the compiler h...