Best way to check if a character array is empty?

Which is the most reliable way to check if a character array is empty? char text[50]; if(strlen(text) == 0) {} o...

Swift - Take Nil as Argument in Generic Function with Optional Argument?

I am trying to create a generic function that can take an optional argument. Here's what I have so far: func someth...

Why `null >= 0 && null <= 0` but not `null == 0`??

I had to write a routine that increments the value of a variable by 1 if its type is number and assigns 0 to the var...

Setting rank to NULL using RANK() OVER in SQL?

In a SQL Server DB, I have a table of values that I am interested in ranking. When I perform a RANK() OVER (ORDER ...

NULL value in multi-column primary key?

I've got a table with several columns making up the primary key. The nature of the data stored allows some of these ...

Restricting a generic to things that can be null?

I'd like to restrict a generic I'm coding to anything that can be null. That's basically any class + System.Nullable...

Null generic type c#?

public class Node&lt;E&gt; : IPosition&lt;E&gt; { private E element; public Node&lt;E&gt; PrevNode { get; se...