Download C# 4.0 Pocket Reference: Instant Help for C# 4.0 Programmers by Ben Albahari, Joseph Albahari PDF

By Ben Albahari, Joseph Albahari

When you are programming C# 4.0 and want a bit aid, this tightly concentrated and useful booklet tells you precisely what you want to be aware of -- with no lengthy introductions or bloated examples. it is excellent as a succinct quickly reference or as a advisor to get you speedily in control should you already understand Java, C++, or an past model of C#.

Written by way of the authors of the acclaimed C# 4.0 in a Nutshell (O’Reilly), this publication covers the complete C# 4.0 language -- with out skimping at the information -- together with:

  • Features new to C# 4.0, reminiscent of dynamic binding, not obligatory and named parameters, and kind parameter variance
  • All of C#'s basics
  • Advanced themes, together with operator overloading, customized conversions, kind 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 an entire connection with question expressions
  • Unsafe code and guidelines, customized attributes, preprocessor directives, and XML documentation

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Extra info for C# 4.0 Pocket Reference: Instant Help for C# 4.0 Programmers

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Otherwise, the literal’s type is the first type in this list that can fit the literal’s value: int, uint, long, and ulong. 5M; // M = decimal (case-insensitive) The suffixes U and L are rarely necessary, because the uint, long, and ulong types can nearly always be either inferred or implicitly converted from int: long i = 5; // Implicit conversion from int to long The D suffix is technically redundant, in that all literals with a decimal point are inferred to be double (and you can always add a decimal point to a numeric literal).

The comparison operators also work on enum type members, by comparing their underlying integral values. 0 Pocket Reference Conditional Operators The && and || operators test for and and or conditions. They are frequently used in conjunction with the ! operator, which expresses not. windy && (rainy || sunny); } The && and || operators short-circuit evaluation when possible. In the preceding example, if it is windy, the expression (rainy || sunny) is not even evaluated. Length > 0) ... windy & (rainy | sunny); The difference is that they do not short-circuit.

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. , referencetype instances) reside. Whenever a new object is created, it is allocated on the heap, and a reference to that object is returned. During a program’s execution, the heap starts filling up as new objects are created.

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