.NET Framework 4 ve Visual Studio 2010 Yenilikleri

Transcript

1. .NET Framework 4 ve
   Visual Studio 2010
   Yenilikleri
   Daron Yöndem
   Microsoft Regional Director
   Silverlight MVP
   

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2. C# 4.0
   • Dynamic typing
   • Generic variance
   • Named arguments
   • Optional parameters
   • COM interop enhancements
   

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3. The DLR on the CLR
   • Common Language Runtime – CLR:
   – Common platform for static languages
   – Facilitates great interop
   • Dynamic Language Runtime – DLR:
   – Common platform for dynamic languages
   – Facilitates great interop
   

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4. Named arguments
   • Because Foo(37, 28, 93, 18, true, true, false) is
   frankly enigmatic
   • Intended for use in demystifying calls to
   libraries outside your control, not to excuse
   designing bad and obscure APIs yourself
   

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5. Optional parameters
   • Were evil in 2002
   – Versioning considerations
   • Time heals all wounds
   – Except those inflicted by DCOM security
   • Uses OptionalAttribute and
   DefaultParameterValueAttribute
   – Does not create an overload
   – Compatible with Visual Basic
   

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6. COM interop enhancements
   • Named and optional arguments support COM
   APIs that depended heavily on them
   • “No PIA”
   – Merges COM interop type definitions into the calling
   assembly so you don’t need to deploy a PIA
   – Runtime magic to identify COM types from multiple
   assemblies
   • Omitting stupid “ref missing” arguments
   

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7. Visual Basic Gelişimi
   Visual
   Basic
   1.0-3.0
   Visual
   Basic
   4.0-6.0
   Visual
   Basic
   7.0-9.0
   Visual
   Basic
   10.0
   Visual
   Basic
   11.0+
   

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8. VB ve C# Kardeşliği
   Hepimiz kardeşiz!
   

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9. Trendler
   Declarative
   Concurrent
   Dynamic
   

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10. Declarative Programlama
    Ne
    Nasıl
    Imperative Declarative
    

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11. Dynamic - Static
    Dynamic
    Diller
    Simple and
    succinct
    Implicitly typed
    Meta-
    programming
    No compilation
    Static
    Diller
    Robust
    Performant
    Intelligent tools
    Better scaling
    

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12. Auto-implemented Properties
    Property FirstName As String
    Property LastName As String
    Initializers:
    Property ID As Integer = -1
    Property Suppliers As New List(Of Supplier)
    

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13. Collection Initializers
    Dim x As New List(Of Integer) From {1, 2, 3}
    Dim list As New Dictionary(Of Integer, String) From
    {{1, “Bart”},
    {2, “Lisa”},
    {3, “Homer”}}
    Array Literals:
    Dim a = {1, 2, 3} 'infers Integer()
    Dim b = {1, 2, 3.5} 'infers Double()
    

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14. Statement Lambdas
    Dim items = {1, 2, 3, 4, 5}
    Array.ForEach(items, Sub(n)
    Console.WriteLine(n))
    Array.ForEach(items,
    Sub(n)
    If n Mod 2 = 0 Then Console.WriteLine(n)
    End Sub)
    'Count the number of even items in the array
    Dim total = items.Count(Function(n)
    Return (n Mod 2 = 0)
    End Function)
    

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15. Implicit Line Continuation
    
    Function Go(
    ByVal x As Integer,
    ByVal y As Integer
    )
    Dim query =
    From n In {
    123,
    456,
    }
    Order By n
    Select n +
    x
    

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16. Python
    Binder
    Ruby
    Binder
    COM
    Binder
    JavaScri
    pt
    Binder
    Object
    Binder
    .NET Dynamic Programming
    Dynamic Language Runtime
    Expression Trees Dynamic Dispatch Call Site Caching
    IronPython IronRuby C# VB.NET Others…
    

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17. Generic Variance
    Dim apples As IEnumerable(Of Apple) = New List(Of Apple)
    'Covariance (Apple inherits from Fruit)
    Dim fruits As IEnumerable(Of Fruit) = apples
    'Contravariance - Func(Of In T, Out R)
    Dim predicate As Func(Of Fruit, Boolean) =
    Function(f) f.Color = "Red"
    apples.Where(predicate)
    

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18. Threading/Concurrency ->
    Parallelism
    On Single Core Machine
    – Don’t block the UI
    • Thread Affinity
    – Async Operations
    – Synchronization Issues
    On Multi-core Machine
    – As above...
    – ... plus Improve Actual Performance
    – ... plus create new user experiences
    

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19. Visual Studio 2010
    • Data Tips
    • BreakPoints
    • Intellitrace
    • Dump Files!
    

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20. Sorular?
    

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21. TEŞEKKÜRLER
    Daron Yöndem
    daron@yondem.com
    http://daron.yondem.com
    

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