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C#/.NET Little Pitfalls

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BlackRabbitCoder

C# is a great programming language for modern development. Like any language, however, there are parts of the language and BCL that can trip you up if you have invalid assumptions as to what is going on behind the scenes. This presentation discusses a few of these pitfalls and how to avoid them.

Technologie
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James Michael Hare 2011 Visual C# MVP Application Architect Scottrade August 5 th , 2011 Blog: http://www.BlackRabbitCoder.net Twitter: @BlkRabbitCoder
The joys of managed code ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
But, there is a catch… ,[object Object],[object Object],[object Object],[object Object],[object Object]
Today’s Little Pitfalls: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Converting boxed values ,[object Object],[object Object],[object Object],[object Object]
Creating unnecessary strings ,[object Object],[object Object],[object Object]
Creating unnecessary strings ,[object Object],[object Object],[object Object],[object Object]
Creating unnecessary strings ,[object Object],[object Object],[object Object],[object Object],[object Object]
Nullable<T> arithmetic ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Nullable<T> arithmetic ,[object Object],[object Object],[object Object],[object Object]
Nullable<T> arithmetic ,[object Object]
Nullable<T> arithmetic ,[object Object],[object Object],[object Object],[object Object],[object Object]
Nullable<T> arithmetic ,[object Object],[object Object],[object Object],[object Object]
Nullable<T> arithmetic ,[object Object]
Nullable<T> comparisons ,[object Object],[object Object],[object Object],[object Object]
Nullable<T> comparisons ,[object Object]
Nullable<T> comparisons ,[object Object],[object Object],[object Object],[object Object]
Mutable readonly values ,[object Object],[object Object],[object Object]
Mutable readonly values ,[object Object],[object Object],[object Object],[object Object]
Mutable readonly values ,[object Object],[object Object],[object Object],[object Object]
Mutable readonly values ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
const values are compile-time ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
const values are compile-time ,[object Object],[object Object]
const values are compile-time ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
const values are compile-time ,[object Object],[object Object],[object Object],[object Object]
Operators are overloaded ,[object Object],[object Object],[object Object],[object Object]
Operators are overloaded ,[object Object],[object Object]
Operators are overloaded ,[object Object],[object Object],[object Object]
Operators are overloaded ,[object Object],[object Object],[object Object],[object Object]
Hiding is the default ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hiding is the default ,[object Object]
Hiding is the default ,[object Object],[object Object]
Hiding is the default ,[object Object],[object Object],[object Object]
Default parameters ,[object Object],[object Object],[object Object]
Default parameters ,[object Object],[object Object],[object Object],[object Object],[object Object]
Default parameters ,[object Object]
Default parameters ,[object Object],[object Object],[object Object],[object Object],[object Object]
Default parameters ,[object Object],[object Object],[object Object],[object Object]
A struct is not a class ,[object Object],[object Object],[object Object],[object Object]
A struct is not a class ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
A struct is not a class ,[object Object],[object Object]
A struct is not a class ,[object Object],[object Object],[object Object],[object Object]
A struct is not a class ,[object Object]
A struct is not a class ,[object Object]
A struct is not a class ,[object Object],[object Object],[object Object]
A struct is not a class ,[object Object],[object Object],[object Object],[object Object],[object Object]
Initialization Order ,[object Object],[object Object],[object Object],[object Object]
Initialization Order ,[object Object],[object Object]
Initialization Order ,[object Object]
Initialization Order ,[object Object],[object Object]
Initialization Order ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Premature polymorphism ,[object Object],[object Object]
Premature polymorphism ,[object Object]
Premature polymorphism ,[object Object],[object Object]
Premature polymorphism ,[object Object],[object Object],[object Object]
Premature polymorphism ,[object Object],[object Object],[object Object]
Unconstrained generics ,[object Object],[object Object],[object Object]
Unconstrained generics ,[object Object],[object Object],[object Object]
Unconstrained generics ,[object Object],[object Object],[object Object],[object Object],[object Object]
Unconstrained generics ,[object Object],[object Object]
Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Questions?
 

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C#/.NET Little Pitfalls

  • 1. James Michael Hare 2011 Visual C# MVP Application Architect Scottrade August 5 th , 2011 Blog: http://www.BlackRabbitCoder.net Twitter: @BlkRabbitCoder
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