4/3/2023 0 Comments Using joxiList result = events.OrderBy(ev => ev.Key) If ((events != null) & (events.Count > 0)) One example: namespace HelloWorldĪppFunc appFunc = (IDictionary events) => Also as a directive, you can create aliases for namespaces and types, as pointed out in the book "C# 5.0 In a Nutshell: The Definitive Guide" ( ), by Joseph and Ben Albahari. As a directive, it is routinely used to import namespaces and types. As a statement, as it was pointed out here in other answers, the keyword is basically syntactic sugar to determine a scope to dispose an IDisposable object. Microsoft documentation states that using has a double function ( ), both as a directive and in statements. So the equivalent code of above would be: using var myRes = new MyResource() Īnd when control leaves the containing scope (usually a method, but it can also be a code block), myRes will be disposed. It tells the compiler that the variable being declared should be disposed at the end of the enclosing scope. The reason for the using statement is to ensure that the object is disposed as soon as it goes out of scope, and it doesn't require explicit code to ensure that this happens.Īs in Understanding the 'using' statement in C# (codeproject) and Using objects that implement IDisposable (microsoft), the C# compiler converts using (MyResource myRes = new MyResource())Ĭ# 8 introduces a new syntax, named " using declarations":Ī using declaration is a variable declaration preceded by the using keyword.
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