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Pass Variables by Reference in Javascript
...ert("x is " + x + ", y is " + y); // "x is 1, y is 2"
In a language like C++, it's possible to do that because that language does (sort-of) have pass-by-reference.
edit — this recently (March 2015) blew up on Reddit again over a blog post similar to mine mentioned below, though in this case abo...
Explain Morris inorder tree traversal without using stacks or recursion
...ld proceed following left children.
Here's my Java code (Sorry, it is not C++)
public static <T> List<T> traverse(Node<T> bstRoot) {
Node<T> current = bstRoot;
List<T> result = new ArrayList<>();
Node<T> prev = null;
while (current != null)...
What are the differences between Rust's `String` and `str`?
...
I have a C++ background and I found it very useful to think about String and &str in C++ terms:
A Rust String is like a std::string; it owns the memory and does the dirty job of managing memory.
A Rust &str is like a char* (...
Is it good practice to NULL a pointer after deleting it?
...
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...