Read e-book online LINQ to Objects Using C# 4.0: Using and Extending LINQ to PDF


By Troy Magennis

I discovered this ebook to be most respected of the entire Linq books i've got come upon. It presents nice functional examples of ways to exploit Linq successfully on facts gadgets and keep 1000's of strains of code. even as, the writer explains the functionality implications that you should make definitely the right choice in your software. This ebook was once an exceptional locate for me as I had a troublesome time final yr while i attempted to take advantage of Linq in a few advanced manipulation of items concerning joins.
The in basic terms unhappiness for me used to be the truth that while I first I learn the publication on-line on Safari Books, the examples have been in colour and syntax highlighted. i made a decision to buy the broadcast ebook to have it as a reference. The print version isn't in colour and turns out a step backwards.
I hugely suggest this booklet to any developer that makes use of Linq. not only for gadgets. it really is good proposal out and brilliantly written with genuine existence examples.

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Read or Download LINQ to Objects Using C# 4.0: Using and Extending LINQ to Objects and Parallel LINQ (PLINQ) PDF

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Extra info for LINQ to Objects Using C# 4.0: Using and Extending LINQ to Objects and Parallel LINQ (PLINQ)

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Net code into a specific domain query language, the full advantage of code built using data or changed at runtime hasn’t been fully leveraged at this time. One concept being explored by Microsoft is the ability to build and compile snippets of code at runtime; this code might be used to apply custom business rules, for instance. When code is represented as data, it can be checked and modified depending on its security implications or how well it might operate concurrently based on the actual environment that code is executed in (whether that be your laptop or a massive multi-core server).

The extension method must be a static method (which is enforced by the compiler due to the class also having to be marked static) 4. String type, adding a method called CreateHyperlink. 0 Language Enhancements 19 namespace MyNamespace { public static class MyStringExtensions { // extension method added to the String type, // single string argument: url. Format( ”{1}”, url, text); } } } Listing 2-1 demonstrates how to create an extension method that returns the SHA1 Hash value for a string (with and without extra arguments).

LINQ frees you from having to write looping code; it allows you to write queries that filter a list or calculate aggregate functions on elements in an in-memory collection, among many other capabilities. NET Framework class libraries certainly do, including simple arrays. To understand the basic query syntax, Listings 2-8 and 2-9 demonstrate simple LINQ to Object queries, with their respective console output shown in Outputs 2-3 and 2-4. WriteLine(result); Output 2-4 27 LINQ to Objects extends any type that inherits from IEnumerable (using extension methods as described earlier), introducing a set of query operations similar to those in an SQL language.

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