null coalescing operator c

?? "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

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

(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

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

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

1) async/awaitUsing the async/await mode, you can not block the UI or the current thread while executing a code block operation. Even if the operation is delayed by certain execution actions (such as a Web request), the async/await pattern will

1) async/awaitUsing the async/await mode, you can not block the UI or the current thread while executing a code block operation. Even if the operation is delayed by certain execution actions (such as a Web request), the async/await pattern will