By Joseph Albahari
When you would like solutions for programming with C# 5.0, this sensible and tightly targeted publication tells you precisely what you want to know—without lengthy introductions or bloated samples. effortless to browse, it’s excellent as fast reference or as a advisor to get you quickly up to the mark when you already be aware of Java, C++, or an prior model of C#.
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Extra resources for C# 5.0 Pocket Reference
ToString()); // test } Because fooSB is a copy of a reference, setting it to null doesn’t make sb null. ) The ref modifier To pass by reference, C# provides the ref parameter modifier. WriteLine (x); // x is now 9 } Now assigning p a new value changes the contents of x. Notice how the ref modifier is required both when writing and when calling the method. This makes it very clear what’s going on. Note A parameter can be passed by reference or by value, regardless of whether the parameter type is a reference type or a value type.
Notice how the ref modifier is required both when writing and when calling the method. This makes it very clear what’s going on. Note A parameter can be passed by reference or by value, regardless of whether the parameter type is a reference type or a value type. The out modifier An out argument is like a ref argument, except it: Need not be assigned before going into the function Must be assigned before it comes out of the function The out modifier is most commonly used to get multiple return values back from a method.
An unreferenced object is eventually collected by the garbage collector. The heap also stores static fields and constants. Unlike objects allocated on the heap (which can get garbage-collected), these live until the application domain is torn down. Definite Assignment C# enforces a definite assignment policy. In practice, this means that outside of an unsafe context, it’s impossible to access uninitialized memory. Definite assignment has three implications: Local variables must be assigned a value before they can be read.