Effective C# : 50 specific ways to improve your C#

著者

    • Wagner, Bill

書誌事項

Effective C# : 50 specific ways to improve your C#

Bill Wagner

(Effective software development series / consulting editor Scott Meyers, /a)

Addison-Wesley, c2017

3rd ed

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注記

"Covers C# 6.0"--Cover

Includes index

内容説明・目次

内容説明

In Effective C#, Third Edition, respected .NET expert Bill Wagner identifies 50 ways to harness the full power of the C# 6.0 language to write exceptionally robust, efficient, and well-performing code. Reflecting the growing sophistication of the C# language and its development community, Wagner has identified dozens of new ways to write better code. This edition's new solutions include some that take advantage of generics and several that are more focused on LINQ, as well as a full chapter of advanced best practices for working with exceptions. Wagner's clear, practical explanations, expert tips, and realistic code examples have made Effective C# indispensable to hundreds of thousands of developers. Drawing on his unsurpassed C# experience, he addresses everything from resource management to multicore support, and reveals how to avoid common pitfalls in the language and its .NET environment. Learn how to choose the most effective solution when multiple options exist, and how to write code that's far easier to maintain and improve. Wagner shows how and why to Prefer implicitly typed local variables (see Item 1) Replace string.Format() with interpolated strings (see Item 4) Express callbacks with delegates (see Item 7) Make the most of .NET resource management (see Item 11) Define minimal and sufficient constraints for generics (see Item 18) Specialize generic algorithms using runtime type checking (see Item 19) Use delegates to define method constraints on type parameters (see Item 23) Augment minimal interface contracts with extension methods (see Item 27) Create composable APIs for sequences (see Item 31) Decouple iterations from actions, predicates, and functions (see Item 32) Prefer lambda expressions to methods (see Item 38) Distinguish early from deferred execution (see Item 40) Avoid capturing expensive resources (see Item 41) Use exceptions to report method contract failures (see Item 45) Leverage side effects in exception filters (see Item 50) You're already a successful C# programmer, and this book will make you an outstanding one. Content Update Program: This title is no longer part of the Content Update Program. The content is final, and no further updates will be released.

目次

Introduction xiii Chapter 1: C# Language Idioms 1 Item 1: Prefer Implicitly Typed Local Variables 1 Item 2: Prefer readonly to const 7 Item 3: Prefer the is or as Operators to Casts 12 Item 4: Replace string.Format() with Interpolated Strings 19 Item 5: Prefer FormattableString for Culture-Specific Strings 23 Item 6: Avoid String-ly Typed APIs 26 Item 7: Express Callbacks with Delegates 28 Item 8: Use the Null Conditional Operator for Event Invocations 31 Item 9: Minimize Boxing and Unboxing 34 Item 10: Use the new Modifier Only to React to Base Class Updates 38 Chapter 2: .NET Resource Management 43 Item 11: Understand .NET Resource Management 43 Item 12: Prefer Member Initializers to Assignment Statements 48 Item 13: Use Proper Initialization for Static Class Members 51 Item 14: Minimize Duplicate Initialization Logic 53 Item 15: Avoid Creating Unnecessary Objects 61 Item 16: Never Call Virtual Functions in Constructors 65 Item 17: Implement the Standard Dispose Pattern 68 Chapter 3: Working with Generics 77 Item 18: Always Define Constraints That Are Minimal and Sufficient 79 Item 19: Specialize Generic Algorithms Using Runtime Type Checking 85 Item 20: Implement Ordering Relations with IComparable and IComparer 92 Item 21: Always Create Generic Classes That Support Disposable Type Parameters 98 Item 22: Support Generic Covariance and Contravariance 101 Item 23: Use Delegates to Define Method Constraints on Type Parameters 107 Item 24: Do Not Create Generic Specialization on Base Classes or Interfaces 112 Item 25: Prefer Generic Methods Unless Type Parameters Are Instance Fields 116 Item 26: Implement Classic Interfaces in Addition to Generic Interfaces 120 Item 27: Augment Minimal Interface Contracts with Extension Methods 126 Item 28: Consider Enhancing Constructed Types with Extension Methods 130 Chapter 4: Working with LINQ 133 Item 29: Prefer Iterator Methods to Returning Collections 133 Item 30: Prefer Query Syntax to Loops 139 Item 31: Create Composable APIs for Sequences 144 Item 32: Decouple Iterations from Actions, Predicates, and Functions 151 Item 33: Generate Sequence Items as Requested 154 Item 34: Loosen Coupling by Using Function Parameters 157 Item 35: Never Overload Extension Methods 163 Item 36: Understand How Query Expressions Map to Method Calls 167 Item 37: Prefer Lazy Evaluation to Eager Evaluation in Queries 179 Item 38: Prefer Lambda Expressions to Methods 184 Item 39: Avoid Throwing Exceptions in Functions and Actions 188 Item 40: Distinguish Early from Deferred Execution 191 Item 41: Avoid Capturing Expensive Resources 195 Item 42: Distinguish between IEnumerable and IQueryable Data Sources 208 Item 43: Use Single() and First() to Enforce Semantic Expectations on Queries 212 Item 44: Avoid Modifying Bound Variables 215 Chapter 5: Exception Practices 221 Item 45: Use Exceptions to Report Method Contract Failures 221 Item 46: Utilize using and try/finally for Resource Cleanup 225 Item 47: Create Complete Application-Specific Exception Classes 232 Item 48: Prefer the Strong Exception Guarantee 237 Item 49: Prefer Exception Filters to catch and re-throw 245 Item 50: Leverage Side Effects in Exception Filters 249 Index 253

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