I'm curious to know the difference between declaring a variable, and initializing a variable. e.g. var example; // this is declaring var example = "hi" // initializing? Or just "adding a value"? ...

I'm declaring some strings that are empty, so it won't throw errors later on. I've read that this was the proper way: string Camnr = Klantnr = Ordernr = Bonnr = Volgnr = Omschrijving = Startdatum...

This is my small program: enum Type { b = 1, c = 2 }; int main() { Type b = b; std::cout << b << std::endl; return 0; } Which outputs 0. Can I conclude that the above definiti...

While writing a template, I want to initialize my variable to a value that serves as zero or null the the data type. If I set it to 0x00 is it going to serve as zero/NULL for any type ? for exampl...

When I call Functions to get a value, I usually initialize varible, in case function fails or doesn't return anything and I want to avoid dealing with uninitialized variable. I do the same for stri...

Is there a nice way to stop the repetition of task from within the task itself when running in a ScheduledExecutorService? Lets say, I have the following task: Future<?> f = scheduledExecut...

To the best of my knowledge, there are three ways to initialize a variable in C++. int x = 0; // C-like initialization int x (0); // Constructor initialization int x {0}; // Uniform initialization...

I have the following code: int *numberArray = calloc(n, sizeof(int)); And I am unable to understand why I receive the following error. Cannot initialize a variable of type 'int *' with an rvalu...

I have this simple line of code: int x; x automatically has the value of 1. I don't set it to anything but when I debug, it shows that x is 1. Does an int have a default value of 1?!

To my surprise, I found that the name of a c++ object can be the same as class name. Can someone explain to me the reason why? When I declare an object of class a as a a1(), it does not raise an e...

I'm fairly new to queries which involve variable declaration in MySQL. I have seen various styles and I'm not fully clear of what these actually do. I've questions about what these actually do. 1)...

In an article about how objects are initialized in Java there was a paragraph which is given below: At the beginning of an object's life, the Java virtual machine (JVM) allocates enough memory ...

Here are two way to initialize class variables. 1st Method class Test { private $var1; private $var2; public function Test($var1,$var1) { $this->var1 = $var1; $this->var2 = $var2; } ...

I have two different tables in my database, and each are displayed to the user based on their "SortOrder". I have written two functions that take a row (or entity) and swaps its sort order with the...

Which do you prefer and why" String myString = null; if(someCondition) myString = "something"; else myString = "something else"; OR String myString = ""; if(someCondition) myString = "someth...