How do I learn this “any … func” code?

Question

I with could re-write the question better, but can someone tell me where I can learn what is happening in this piece of azure code?

Answer 1

That code has about three non-basic concepts in it:

• Extension Methods

  Extension methods enable you to "add" methods to existing types without creating a new derived type, recompiling, or otherwise modifying the original type.

• LINQ (Language-Integrated Query)

  Language-Integrated Query (LINQ) is a set of features introduced in Visual Studio 2008 that extends powerful query capabilities to the language syntax of C# and Visual Basic.

• Lambda Expressions

  A lambda expression is an anonymous function that can contain expressions and statements, and can be used to create delegates or expression tree types.

Answer 2

It simply returns true if one of the items in the changes collections is a RoleConfigurationSettingChange.

This is one of the LINQ extension methods and has nothing to do with Azure.

Answer 3

This method is checking to see if any of the changes passed into the RoleEnvironmentChanging method are a configuration change.

By looking at the list of changes, it uses the .Any method to see if any of the changes are of the type RoleEnvironmentConfigurationSettingsChange.

Answer 4

Further reading ... http://msdn.microsoft.com/en-us/library/bb534972.aspx

Its essentially saying if that if there are any changes of type specified then execute the body of the if statement.

Hope that helps