Download PDF by Ben Albahari, Joseph Albahari: C# 4.0 Pocket Reference

By Ben Albahari, Joseph Albahari

ISBN-10: 1449394019

ISBN-13: 9781449394011

When you're programming C# 4.0 and wish a bit aid, this tightly concentrated and sensible ebook tells you precisely what you must be aware of -- with out lengthy introductions or bloated examples. It's perfect as a succinct fast reference or as a consultant to get you quickly in control if you happen to already understand Java, C++, or an past model of C#.

Written by means of the authors of the acclaimed C# 4.0 in a Nutshell (O’Reilly), this booklet covers the complete C# 4.0 language -- with out skimping at the info -- together with:
<UL> * good points new to C# 4.0, corresponding to dynamic binding, not obligatory and named parameters, and kind parameter variance
* All of C#'s basics
* complicated issues, together with operator overloading, customized conversions, variety constraints, covariance and contravariance, lambda expressions and closures, iterators, nullable forms, and operator lifting
* LINQ, beginning with sequences, lazy execution, and conventional question operators; completing with a whole connection with question expressions
* hazardous code and guidelines, customized attributes, preprocessor directives, and XML documentation

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The ternary conditional operator (simply called the conditional operator) has the form q ? a : b, where if condition q is true, a is evaluated, else b is evaluated. For example: static int Max (int a, int b) { return (a > b) ? a : b; } The conditional operator is particularly useful in LINQ queries. Download from Library of Wow! com> Boolean Type and Operators | 27 Download from Library of Wow! Char type) represents a Unicode character and occupies two bytes. A char literal is specified inside single quotes: char c = 'A'; // Simple character Escape sequences express characters that cannot be expressed or interpreted literally.

You can obtain the default value for any type using the default keyword (in practice, this is useful with generics, as we’ll see later). , struct) is the same as the default value for each field defined by the custom type. Parameters A method has a sequence of parameters. Parameters define the set of arguments that must be provided for that method. In this example, the method Foo has a single parameter named p, of type int: static void Foo (int p) // p is a parameter { ... } static void Main() { Foo (8); } // 8 is an argument Variables and Parameters | 37 Download from Library of Wow!

The stack logically grows and shrinks as a function is entered and exited. Consider the following method (to avoid distraction, input argument checking is ignored): static int Factorial (int x) { if (x == 0) return 1; return x * Factorial (x−1); } This method is recursive, meaning that it calls itself. Each time the method is entered, a new int is allocated on the stack, and each time the method exits, the int is deallocated. Variables and Parameters | 35 Download from Library of Wow! , referencetype instances) reside.

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C# 4.0 Pocket Reference by Ben Albahari, Joseph Albahari

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