Effective C#50 Specific Ways to Improve Your C# 2nd phần 10 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 ... you. You likely need to attempt to cast those objects to other types, either classes or interfaces. You’ve got two choices: Use theas operator or force the compiler to bend to your will using a ... You expect to get this:Value is 105 Value is 106 Value is 119In fact, you get no output at all. The loop now uses the value 105 for its start and 10 for its end condition. The C# compiler...

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 ... are hard to ﬁnd because the compiler generates code to convert these objects. Avoid conversion operators in your APIs.Item 10: Use Optional Parameters to Minimize Method Overloads C# now has...

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 ... polymorphic. They are better suited to storing the data that your application manipu-lates. Reference types can be polymorphic and should be used to deﬁne the behavior of your application. Consider...

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// ... IComparable.CompareTo(object obj) {if (!(obj is Customer)) throw new ArgumentException("Argument is not a Customer", "obj"); Customer otherCustomer = (Customer)obj; return...

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

... element: 30The query does not begin to execute until the first call to MoveNext() on the enumerator. The first call to MoveNext() executes the query on enough elements to retrieve the first element on ... elided. }}This is a problem. Your base class snuck a method underneath your class’s naming scope. There are two ways to fix this. You could change that name of your NormalizeValues method. Note ... 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

... 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 ... itself dynamic. At some point, you’ll 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 ... server.The first example showed you how to parse expressions to convert code (or at least expressions that define code) into data elements you can use to implement runtime algorithms. The second...

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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