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Tips and Tricks To Improve Code Readability in C#
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Jaime
June 10, 2012
Programming
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Tips and Tricks To Improve Code Readability in C#
Jaime
June 10, 2012
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Transcript
P2P Code Academy Becoming a C# Warrior-Poet or Tips and
Tricks To Improve Code Readability in C# 4 30th March
C#
Outline • Object Initializers • Named Arguments • Extension Methods
• LINQ
Ye Olde Classic Constructor
Object Initializers vs Constructors
Object Initializers Uses Default Constructor!
Object Initializers. Benefits • Improved Readability • Less boiler-plate code
– Don’t even need a constructor!
DEMO OBJECT INITIALIZERS
Collection Initializers
Named Arguments • Explicitly name method arguments
Named Arguments. Benefits What the heck is true?
Named Arguments. Benefits
Extension Methods Add methods to existing types: • No need
to create derived type • No need to re-compile existing type • No need to modify original type • Just static methods in disguise!
Extension Methods. Syntax Special use of keyword this Look like
instance methods!
Extension Methods Add a method to a primitive type Adding
this method to the string class
Extension Methods Add a method to a primitive type Before
After
DEMO EXTENSION METHODS
Extension Methods Add a method to a compiled custom type
LINQ Query language within C# and VB.NET • Very Expressive
• Extensible • Integrated – LINQ to Objects – LINQ to SQL – LINQ to XML – LINQ to Entities
LINQ. Example Filtering a collection (People older than 30)
LINQ. Example Query Syntax Method Chain Syntax
DEMO LINQ
Summary • Object Initializers • Named Arguments • Extension Methods
• LINQ
If you put it all together... Sonnet 138. The Passionate
Pilgrim C# version while (myLove.Swears(that: ”She is made of truth”)) { do I.Believe(her); while (she.Lies()) she.Might(s => s.Think(I == ”some untutored youth”)); she.Might(s => s.Think(I == ”unskillful”)); ... }
C#
If you want to know more…
References • Object and Collection Initializers http://bit.ly/csharp-object-collection-initializer • Named Arguments
http://bit.ly/csharp-named-arguments • Extension Methods http://bit.ly/csharp-extension-methods • LINQ http://bit.ly/linq-language-integrated-query
Thank you