By Joseph Albahari
When you would like solutions for programming with C# 5.0, this sensible and tightly concentrated ebook tells you precisely what you want to know—without lengthy introductions or bloated samples. effortless to browse, it’s excellent as speedy reference or as a advisor to get you speedily up to the mark in the event you already comprehend Java, C++, or an prior model of C#.
Written through the authors of C# 5.0 in a Nutshell, this publication covers the total C# 5.0 language, including:
- All of C#’s basics
- Advanced themes akin to operator overloading, style constraints, covariance & contravariance, iterators, nullable varieties, operator lifting, lambda expressions & closures
- LINQ, beginning with sequences, lazy execution and conventional question operators, and completing with an entire connection with question expressions
- Dynamic binding and C# 5.0’s new asynchronous features
- Unsafe code & tips, customized attributes, preprocessor directives, and XML documentation
Read or Download C# 5.0 Pocket Reference: Instant Help for C# 5.0 Programmers PDF
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Additional info for C# 5.0 Pocket Reference: Instant Help for C# 5.0 Programmers
During a program’s execution, the heap starts filling up as new objects are created. 0 Pocket Reference puter does not run out of memory. An object is eligible for deallocation as soon as it’s not referenced by anything that’s itself alive. Value-type instances (and object references) live wherever the variable was declared. If the instance was declared as a field within an object, or as an array element, that instance lives on the heap. NOTE You can’t explicitly delete objects in C#, as you can in C++.
We can call this supplying only a value for d as follows: Bar (d:3); This is particularly useful when calling COM APIs. var—Implicitly Typed Local Variables It is often the case that you declare and initialize a variable in one step. If the compiler is able to infer the type from the initialization expression, you can use the word var in place of the type declaration. PI; Because of this direct equivalence, implicitly typed variables are statically typed. For example, the following generates a compile-time error: var x = 5; x = "hello"; // Compile-time error; x is of type int In the section “Anonymous Types” on page 141, we describe a scenario where the use of var is mandatory.
And <=, work for all numeric types, but should be used with caution with real numbers (see the section “Real Number Rounding Errors” on page 26 on the previous page). The comparison operators also work on enum type members, by comparing their underlying integral values. Boolean Type and Operators | 27 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.