C# in Depth

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INDEX 391type parameters (continued)inference 80unconstrained 75Type property of Expression 239type safety 42, 44, 103, 111type systemcharacteristics of C# 42, 48in C# 1 33richness 45summary of C# 1 48type systems 42, 59type variables, fixed and unfixed 248typed datasets 335–338typedef 106TypedTableBase 337typeless expressions 223typeof 244with nullable types 121typeof operator 69, 81, 92type-specific optimizations 109typing, IComparer 9Uunary logical negation operatorfor bool? 127unary operators 125unbound generic types 68, 92unboxing 53–54, 89of Nullable. See Nullable, boxing and unboxinguncertainty 121unconstrained type parameters 75undefined behavior of IEnumerator.Current 173unfixed type variables 248unified data access 276unintended comparisons with nullable values 126Union. See Standard Query Operators, Unionunit testing 202, 353unit tests 131, 222, 272Unix 19unknown values 13UnmanagedType 201unsafe code 42, 199unsafe conversions 44unsigned assemblies 203untyped datasets 334–335unwrapping 123UPDATE 319Update 319URLscomparison with references 49, 54, 113fetching in new threads 153user interface 269user-defined operators 125using directive 135, 193, 261using statement 25, 28, 181, 193implicit typing 213UTF-8 44utility classes 190, 256, 266Vvalidation 188, 192, 209, 273Valueproperty of DictionaryEntry 67property of Nullable. See Nullable, Valuepropertyvalue type constraints 76on Nullable 116value types 48, 178, 255automatic properties 210generic type parameters 76handled efficiently with generics 65non-nullability 58, 113Values 101var 43, 211See also implicit typingvarargs 20variableimpossibility of hiding in C# 1 6untyped 43variablesdefinite assignment 65implicitly typed 57instance 50local 50location in memory 50–52range variables 287static 51Variant 211VB Classic 20VB.NET 20, 24, 201VB6 20, 24, 211VB8 21VB9 277, 281version number 26versioning 110, 261, 273virtual methods 184, 188visibility 356visible constructors 191Vista 21, 200Visual Basic 47, 355version numbers 27Visual C++ team 109Visual Studio .NET 2002 20Visual Studio .NET 2003 20Visual Studio 2005 21, 187, 197Visual Studio 2008 22, 263DataSet designer 335displaying extension methods 260Licensed to Rhona Hadida
392INDEXVisual Studio 2008 (continued)displaying inferred types 211, 225Intellisense in LINQ 325LINQ to SQL designer 316reference properties window 197update for Entity Framework 348Visual Studio, version numbers 27void 147, 189Wwarning numbers 198warning pragmas 197warnings 144, 197weak typing 42, 211of interface 74web page, comparison with reference types 49web service proxies 187web services 179, 269, 344, 346web site of book 30WebRequest 258WebResponse 258where 15type constraints 75Where. See Standard Query Operators, Wherewhitespace 147, 203, 218–219, 267wiki 49wildcards 110will 34, 38Windows 19, 26, 199, 347Windows Forms 26, 184Windows Live ID 24Windows Presentation Foundationused to write Snippy 30Windows Presentation Foundation (WPF) 21, 187Windows Server 2008 200workflow, of iterators 167WPF. See Windows Presentation Foundation(WPF)wrapperfor faking nullity 13for value types 115write once, run anywhere 19WriteLine 67XXAML. See Extensible Application Markup Language(XAML)XAttribute 338, 340, 342XComment 338XDocument 338–339, 343XElement 338–339, 342axis methods 342XML 16, 222, 277, 338declaration 339documentation 209mapping files for ADO.NET EntityFramework 348metadata for LINQ to SQL 316used to describe standard libraries 26XName 338XPath 343Yyield statements 165finally blocks 170–172restrictions 166yield break 169–170yield return 165–169yield type 166Zzerorepresentation of null 113result of comparison 134Licensed to Rhona Hadida
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C# in DepthLicensed to Rhona Hadida
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C# in DepthJON SKEETMANNINGGreenwic
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Licensed to Rhona Hadida
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Licensed to Rhona Hadida
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xCONTENTS1.3 The .NET platform 24Di
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xiiCONTENTS5.4 Inline delegate acti
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xivCONTENTS9.4 Changes to type infe
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xviCONTENTS13.2 Delegation as the n
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xviiiFOREWORDOf the latter kind, th
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xxPREFACEdidn’t start using C#2 u
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xxiiACKNOWLEDGMENTSThe aforemention
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xxivABOUT THIS BOOKwant to become e
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xxviABOUT THIS BOOKSQL statements.
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about the cover illustrationThe cap
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xxxCOMMENTS FROM THE TECH REVIEWThi
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Chapter 1 presents a bird’s-eye v
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4 CHAPTER 1 The changing face of C#
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10 CHAPTER 1 The changing face of C
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Core foundations:building on C# 1Th
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34 CHAPTER 2 Core foundations: buil
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C# 2 and 3: new features on a solid
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C# 2 and 3: new features on a solid
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Summary59Listing 2.7 shows a number
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Part 2C#2:solving the issuesof C#1I
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Parameterizedtyping with genericsTh
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Simple generics for everyday use65o
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Simple generics for everyday use67I
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Simple generics for everyday use69t
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Simple generics for everyday use71N
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Simple generics for everyday use73}
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Beyond the basics75parameters. You
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Beyond the basics77NOTEC# vs. CLI s
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Beyond the basics79combined togethe
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Beyond the basics813.3.3 Implementi
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Beyond the basics83derive from a pa
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Advanced generics85implement IEquat
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Advanced generics87within another,
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Advanced generics89ArrayListobject[
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Advanced generics91}{}return new Co
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Advanced generics93Listing 3.10Usin
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Advanced generics95REFLECTING GENER
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Generic collection classes in .NET
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Limitations of generics in C# and o
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Summary111My personal opinion is th
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What do you do when you just don’
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System.Nullable and System.Nullable
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C# 2’s syntactic sugar for nullab
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Novel uses of nullable types131part
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Novel uses of nullable types133else
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Novel uses of nullable types135}{}i
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Fast-tracked delegatesThis chapter
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Saying goodbye to awkward delegate
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Covariance and contravariance141met
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Covariance and contravariance143som
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Inline delegate actions with anonym
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Capturing variables in anonymous me
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Implementingiterators the easy wayT
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C# 1: the pain of handwritten itera
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C# 2: simple iterators with yield s
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Real-life example: iterating over r
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Pseudo-synchronous code with the Co
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Summary181(without using a dedicate
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Concluding C# 2:the final featuresT
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Partial types185C# 2 allows more th
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Partial types187code generator can
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Partial types189Listing 7.2A partia
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Static classes191}public static str
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Namespace aliases193same syntax is
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Namespace aliases195Listing 7.6usin
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Pragma directives197}}Console.Write
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Fixed-size buffers in unsafe code19
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Exposing internal members to select
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Exposing internal members to select
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Part 3C# 3—revolutionizinghow we
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Cutting fluffwith a smart compilerT
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Automatically implemented propertie
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Implicit typing of local variables2
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Implicit typing of local variables2
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Simplified initialization215simple
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Simplified initialization217The par
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Simplified initialization219CREATIN
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Simplified initialization221Home =
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Implicitly typed arrays2238.4 Impli
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Anonymous types225new { Name = "Hol
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Anonymous types227That certainly wo
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Summary229typed local variables—a
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Lambda expressions and expression t
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Lambda expressions as delegates233L
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Simple examples using List and even
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Simple examples using List and even
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Expression trees239code to run on y
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Expression trees241So, what’s the
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Expression trees243the tree and how
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Changes to type inference and overl
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Summary253find the better conversio
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Extension methodsThis chapter cover
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Life before extension methods257Sys
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Extension method syntax259extension
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Extension method syntax26110.2.3 Ho
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Extension methods in .NET 3.5263pub
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Extension methods in .NET 3.5265ret
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Extension methods in .NET 3.5267as
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Extension methods in .NET 3.5269Now
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Usage ideas and guidelines271extens
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Usage ideas and guidelines273those
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Query expressionsand LINQ to Object
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Introducing LINQ277the extension me
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Introducing LINQ279Figure 11.1 show
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Introducing LINQ281flexible. In par
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Simple beginnings: selecting elemen
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Filtering and ordering a sequence29
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Filtering and ordering a sequence29
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Let clauses and transparent identif
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Joins29711.5 JoinsEach part of the
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Joins299from defect inSampleData.Al
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Joins30111.5.2 Group joins with joi
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Joins303foreach (var grouped in que
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Joins305from user inSampleData.AllU
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Groupings and continuations307In ju
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Groupings and continuations309from
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Groupings and continuations311perso
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Summary31311.7 SummaryIn this chapt
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LINQ to SQL315LINQ to DataSet and L
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LINQ to SQL317■ I changed the typ
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LINQ to SQL319each of type Table fo
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LINQ to SQL321FROM [dbo].[Defect] A
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LINQ to SQL323FROM [dbo].[Notificat
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LINQ to SQL325using (var context =
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Translations using IQueryable and I
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LINQ to DataSet335where defect.Fiel
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LINQ to DataSet337Creating and popu
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LINQ to XML339■ Create a document
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Page 398 and 399: Quantifiers367Table A.9Partitioning
Page 400 and 401: Sorting369For the examples of these
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Page 404 and 405: INDEX 373C# (continued)influences 1
Page 406 and 407: INDEX 375confusion 150, 222over cap
Page 408 and 409: INDEX 377Document Object Model (DOM
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Page 412 and 413: INDEX 381interfaces (continued)no c
Page 414 and 415: INDEX 383List`1 93lists 278local va
Page 416 and 417: INDEX 385Nullable (continued)Value
Page 418 and 419: INDEX 387RRails 22random access 102
Page 420 and 421: INDEX 389Standard Query Operators (
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