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Is it good practice to NULL a pointer after deleting it?
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Setting a pointer to 0 (which is "null" in standard C++, the NULL define from C is somewhat different) avoids crashes on double deletes.
Consider the following:
Foo* foo = 0; // Sets the pointer to 0 (C++ NULL)
delete foo; // Won't do anything
Whereas:
Foo* foo = new Foo(...
Error: could not find function … in R
... provide enough arguments).
I got this in an Rcpp context, where I wrote a C++ function with optionnal arguments, and did not provided those arguments in R. It appeared that optionnal arguments from the C++ were seen as mandatory by R. As a result, R could not find a matching function for the correc...
What is the difference between statically typed and dynamically typed languages?
... as the programmer must specify what type each variable is (e.g.: Java, C, C++); other languages offer some form of type inference, the capability of the type system to deduce the type of a variable (e.g.: OCaml, Haskell, Scala, Kotlin)
The main advantage here is that all kinds of checking can be d...
Thread pooling in C++11
...ight even make your application goes slower than the serial version.
Each C++11 thread should be running in their function with an infinite loop, constantly waiting for new tasks to grab and run.
Here is how to attach such function to the thread pool:
int Num_Threads = thread::hardware_concurrenc...
What is reflection and why is it useful?
...upport introspection, but do not support reflection. One such example
is C++
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When to use static classes in C# [duplicate]
... object that you can easily represent. Remember that C#'s predecessors are C++ and C where you can just define global functions that do not exist in a class. This lends more to 'top-down' programming. Static methods can be used for these cases where it doesn't make sense that an 'object' performs th...
How can I install pip on Windows?
...Unable to find vcvarsall.bat
Python modules can be partly written in C or C++. Pip tries to compile from source. If you don't have a C/C++ compiler installed and configured, you'll see this cryptic error message.
Error: Unable to find vcvarsall.bat
You can fix that by installing a C++ compile...
Effects of the extern keyword on C functions
...ons, extern is not needed as it is on by default.
Note that the rules for C++ are different. For example, extern "C" is needed on the C++ declaration of C functions that you are going to call from C++, and there are different rules about inline.
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What is the default location for MSBuild logs?
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Log file from Visual Studio is only supported for C++ projects. You just have to work with the output window for others.
See this similar thread: VS2010: minimal build log in output and detailed log in log file
And in case you happen to do this for a C++ project, the file ...
When should I write the keyword 'inline' for a function/method?
When should I write the keyword inline for a function/method in C++?
15 Answers
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