Effective C#50 Specific Ways to Improve Your C# 2nd phần 3 pps

Effective C#50 Specific Ways to Improve Your C# Second Edition phần 1 ppt

... of Wow! eBookptg Effective C# 50 Specific Ways to Improve Your C# Second EditionBill WagnerUpper Saddle River, NJ • Boston • Indianapolis • San Francisco New York • Toronto • Montreal • London ... Framework 179Item 30 : Prefer Overrides to Event Handlers 179Item 31 : Implement Ordering Relations with IComparable<T> and IComparer<T> 1 83 Item 32 : Avoid ICloneable 190Item 33 : Use the ... Only to React to Base Class Updates 194Item 34 : Avoid Overloading Methods Deﬁned in Base Classes 198Item 35 : Learn How PLINQ Implements Parallel Algorithms 2 03 Item 36 : Understand How to Use...

Effective C#50 Specific Ways to Improve Your C# Second Edition phần 2 pptx

... "SomeSample.Size" is not what you want to display to your users. But that’s what you get when you don’t override ToString() in your classes. You write a class once, but your clients use it many times. ... } #endregion// Nested class to provide the // custom formatting for the Customer class. private class CustomerFormatProvider : ICustomFormatter {#region ICustomFormatter Members public ... a type can be composed into a larger object that implements value-based semantics. C# gives you numerous ways to test equality, but you need to consider pro-viding your own deﬁnitions for only...

Effective C#50 Specific Ways to Improve Your C# Second Edition phần 3 docx

... are, stop it. Veteran C++ programmers would factor the common algorithms into a private helper method. Stop that, too. When you ﬁnd that multiple constructors contain the same logic, fac-tor ... logic to initialize static member variables, create a static constructor.Implementing the singleton pattern in C# is the most frequent use of a static constructor. Make your instance constructor ... natural to reach for the most famil-iar tools at your disposal. However, those tools might not be the best tools. When you ﬁnd yourself writing any form of a looping construct, ask your- self...

Effective C#50 Specific Ways to Improve Your C# Second Edition phần 4 pdf

... structure refers to the same array storage (phones) allocated outside the object. Developers can modify your immutable structure through another variable that refers to the same storage. To remove ... meant to store data values, value types are the way to go.The decision to make a value type or a reference type is an important one. It is a far-reaching change to turn a value type into a class ... way for users of your class to construct an object in steps, yet maintain the immutability of your type.The Garbage Collector does an efﬁcient job of managing the memory that your application...

Effective C#50 Specific Ways to Improve Your C# Second Edition phần 6 pptx

... Relational Operators. public static bool operator <(Customer left,Customer right) {return left.CompareTo(right) < 0; } public static bool operator <=(Customer left,Customer right) ... (!(obj is Customer)) throw new ArgumentException("Argument is not a Customer", "obj"); Customer otherCustomer = (Customer)obj; return this.CompareTo(otherCustomer);} #endregion// ... you want your classes to operate well with the classes created by the framework designers.Item 30 : Prefer Overrides to Event HandlersMany .NET classes provide two different ways to handle...

Effective C#50 Specific Ways to Improve Your C# Second Edition phần 7 ppt

... resolution works to be able to use your API. Instead, don’t overload methods declared in a base class. It doesn’t provide any value, and it will only lead to confusion among your users.Item 35 : Learn ... Item 33 covered why using the new modifier could lead to hard -to- find bugs in your code. In this item, you’ll learn why creating overloads of methods that are defined in a base class leads to similar ... class to the world, that would force all your users to make numerous changes. That’s where the new modifier comes in handy. Your clients will continue to use your NormalizeValues() method without...

Effective C#50 Specific Ways to Improve Your C# Second Edition phần 8 pps

... want to bring those dynamic objects back into the static type system used by most of your C# code. That’s going to require either a cast or a conver-sion operation:answer = Add(5, 12 .3) ; int ... much work to do.Implementing dynamic behavior can be a great way to approach some of your programming challenges. When you look at creating dynamic types, your ﬁrst choice should be to derive ... converted to a call to Cast<MyType> by the compiler. Again, it throws an InvalidCastException. Here’s one way to restructure the code so that it works:Item 39 : Use Dynamic to Leverage...

Effective C#50 Specific Ways to Improve Your C# 2nd phần 3 pps

... static constructors are called. And, yes, your static initializers execute before the base class’s static constructor.The CLR calls your static constructor automatically before your type is ﬁrst ... complicated logic to initialize the singleton:public class MySingleton2 {private static readonly MySingleton2 theOneAndOnly;static MySingleton2(){theOneAndOnly = new MySingleton2();}public ... that leads to unmaintainable code.If you want to convert another type into your type, use a constructor. This more clearly reﬂects the action of creating a new object. Conversion oper-ators can...

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