Define a global variable in a JavaScript function
As the others have said, you can use var at global scope (outside of all functions and modules) to declare a global variable: … Read more
declaration
Meaning of ‘const’ last in a function declaration of a class?
When you add the const keyword to a method the this pointer will essentially become a pointer to const object, and you cannot … Read more
How to initialize a vector in C++ [duplicate]
This question already has answers here: What is the easiest way to initialize a std::vector with hardcoded elements? (29 answers) Closed 2 years … Read more
Cannot refer to a non-final variable inside an inner class defined in a different method
Edited: I need to change the values of several variables as they run several times thorugh a timer. I need to keep updating … Read more
What are forward declarations in C++?
At: http://www.learncpp.com/cpp-tutorial/19-header-files/ The following is mentioned: add.cpp: int add(int x, int y) { return x + y; } main.cpp: #include <iostream> int add(int … Read more
What does “default” mean after a class’ function declaration?
I’ve seen default used next to function declarations in a class. What does it do? class C { C(const C&) = default; C(C&&) … Read more
Is it possible to declare two variables of different types in a for loop?
Is it possible to declare two variables of different types in the initialization body of a for loop in C++? For example: for(int … Read more
Meaning of = delete after function declaration
class my_class { … my_class(my_class const &) = delete; … }; What does = delete mean in that context? Are there any other … Read more
What is the ‘open’ keyword in Swift?
The ObjectiveC.swift file from the standard library contains the following few lines of code around line 228: extension NSObject : Equatable, Hashable { … Read more
Declaring multiple variables in JavaScript
In JavaScript, it is possible to declare multiple variables like this: var variable1 = “Hello, World!”; var variable2 = “Testing…”; var variable3 = … Read more
