null coalescing operator

?? "Null coalescing" operator Is a new operator provided by c #. The function provided by this operator is to determine whether the left-side operand is null. If yes, the return result is the right-side operand, and if not null, the left-side

(1), C # syntax of a question mark (?) operator refers to a nullable type. The explanation above MSDN: null to numeric and Boolean types was especially useful when you were dealing with databases an d Other data types, that contain elements, is not

(1), C # each question mark (?) in the syntax (?) Operator refers:It can be a null type.  The above description on msdn: null to numeric and Boolean types is especially useful when you are dealing with databases and other data types that contain

From:http://www.cnblogs.com/zfanlong1314/archive/2012/02/26/2390456.html(1), C # syntax of a question mark (?) Operator refers to a nullable type. The explanation above MSDN: null to numeric and Boolean types was especially useful when you were

Null-value merge operators and interval operators The main things to see today are the basic operators in Swift. Record it. Nil coalescing Operator A?? b in the?? is a null-value merge operator that will judge a and, if not nil, unpack, or return

The "null coalescing" operator is a new operator provided by C # that provides the ability to determine whether the operand on the left is null, and if so, the result is the operand on the right, and Non-null returns the operand on the left. We can

Field initializers You can assign values directly to values or objects. We recommend that you do not assign values to the filed initialzer directly. When Inheritance occurs, the order will be weird: Solution: assign values to filed in

The preview version of VS2015 was released on November 12, so let's look at what new features are available in C #.String Add-interpolationWhen formatting a string, string. Format is often used, it is really handy, but it is not convenient to use

Ref: http://csharpindepth.com/Articles/General/BluffersGuide2.aspx Obviusly C # In depth teaches the new features of C #2In depth. However, if you want to bluff it for the moment (just until your copy of the book arrives, of course)-welcome to the

Read the scottgu's blog today and see this article: The C #?? Null coalescing operator (and using it with LINQ) . I think it's really fun. If you think it might be useful later, I plan to take the big bull's Article I moved to my home. e is not good.