By Bill Wagner
C# has matured during the last decade: It’s now a wealthy language with generics, sensible programming options, and help for either static and dynamic typing. This palette of ideas offers nice instruments for lots of assorted idioms, yet there also are some ways to make blunders. In Effective C#, moment Edition, revered .NET specialist invoice Wagner identifies fifty methods you could leverage the complete energy of the C# 4.0 language to precise your designs concisely and clearly.
Effective C#, moment Edition, follows a transparent structure that makes it crucial to millions of builders: transparent, functional motives, specialist advice, and many real looking code examples. Drawing on his unsurpassed C# event, Wagner addresses every thing from kinds to source administration to dynamic typing to multicore help within the C# language and the .NET framework. alongside the way in which, he exhibits how you can steer clear of universal pitfalls within the C# language and the .NET surroundings. You’ll learn the way to
- Use either forms of C# constants for potency and maintainability (see merchandise 2)
- Employ immutable info forms to advertise multicore processing (see merchandise 20)
- Minimize rubbish assortment, boxing, and unboxing (see goods sixteen and forty five)
- Take complete benefit of interfaces and delegates (see goods 22 even though 25)
- Make the main of the parallel framework (see goods 35 via 37)
- Use duck typing in C# (see merchandise 38)
- Spot the benefits of the dynamic and Expression varieties over mirrored image (see goods forty two and forty three)
- Assess why question expressions are larger than loops (see merchandise eight)
- Understand how known covariance and contravariance have an effect on your designs (see merchandise 29)
- See how non-compulsory parameters can reduce the variety of procedure overloads (see merchandise 10)
You’re already a winning C# programmer–this ebook may help you turn into a superb one.
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Example text
But that means writing more code, work that the compiler and JIT engine can do for you. ) It shouldn't take you long to see that you've essentially copied an algorithm and have made a couple of substitutions. Well, that's exactly what the compiler does with generics. Serialize(w, data); } } } Next, you get the requirement to stream XML nodes to an open output stream. Deserialize(inputStream); return rVal; 36 37 } } Another advantage of this version is that the compiler can infer the type parameter for the save methods.
The solution is to define a delegate that takes two parameters and returns a point. 5: delegate TOutput Func
In almost all cases, you don't care what capabilities a type parameter has beyond those your type expects and uses. But in the special case of a type parameter that implements IDisposable, you have some extra work on your hands. Real-world examples that demonstrate this issue become complicated rather quickly, so I've fabricated a simple example to show how this issue occurs and how to rectify it in your code. DoWork(); } } You may have introduced a resource leak if T implements IDisposable. DoWork(); } } This may look a bit confusing if you've never seen that sort of cast in a using statement, but it works.