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Which is faster Any or Count?
Any() is ALWAYS faster than . Count() > 0 ).
Why use Count instead of Any?
First, Any() without parameters is quicker than Count() as it does not iterate through the whole collection. Second, Any() improves the readability of your code, indicating that the developer just wants to check if there are any items in the collection and isn’t concerned with the exact number of items.
What does count () do in C#?
In its simplest form (without any parameters), the Count() method returns an int indicating the number of elements in the source sequence. IEnumerable strings = new List { “first”, “then”, “and then”, “finally” }; // Will return 4 int result = strings.
How do you clear a list in C#?
To empty a C# list, use the Clear() method.
What is use of any () in C#?
The Any method checks whether any of the element in a sequence satisfy a specific condition or not. If any element satisfy the condition, true is returned.
Is there an any type in C#?
C# provides a standard set of built-in types to represent integers, floating point values, Boolean expressions, text characters, decimal values, and other types of data. There are also built-in string and object types. These types are available for you to use in any C# program.
Can a list be null?
A list is never null. The variable might be null, but a list itself is not null. Null is just null, and also has a specific intrinsic meaning. The following code demonstrates that there’s no difference between a variable that’s an uninitialized List versus an uninitialized Integer.
What is possible multiple enumeration?
One of the many useful warnings in ReSharper is “Possible multiple enumeration of IEnumerable“. If you enumerate an enumerable more than once, ReSharper detects that and warns you about it. Although this warning may seem pointless at first, there are two good reasons to pay attention to it.