In C#, a predicate is a delegate (a type that refers to a method) or a lambda expression that takes a single parameter and returns a Boolean value indicating whether the input meets certain criteria. For example, the code below defines a predicate that tests if a given integer is even: A func, on the

You can use the null-coalescing operator (??) to provide a default value for a nullable type or reference type. The null-coalescing operator returns the left-hand operand if it is not null, or the right-hand operand if the left-hand operand is null. Here is an example of how to use the null-coalescing operator: This is equivalent

In C#, an Array is a collection of items that are stored in a contiguous block of memory. It is a fixed size, meaning that you must specify the size of the array when you create it, and you cannot change the size of the array later. Arrays are also index-based, meaning that you access

An array in C# is a collection of variables that are stored together in a contiguous block of memory. Arrays are used to store multiple values in a single object, and can be used to store values of any data type, including primitive types like integers and strings, and reference types like objects. Arrays are