Blog down time

Azure and PHP 5.5 didn’t seem to get along very much.

Got a lot of this in the log suddenly (without any modifications):


[07-Feb-2014 05:15:00 America/Los_Angeles] PHP Warning: PHP Startup: Unable to load dynamic library 'D:Program Files (x86)PHPv5.5extphp_sqlsrv.dll' - The specified module could not be found.
in Unknown on line 0
[07-Feb-2014 05:15:00 America/Los_Angeles] PHP Warning: PHP Startup: Unable to load dynamic library 'D:Program Files (x86)PHPv5.5extphp_pdo_sqlsrv.dll' - The specified module could not be found.
in Unknown on line 0

I’ve reverted to PHP 5.4 in the Azure Management web. All seems to work OK. Thumbs crossed.

OneTrueError and the WinForms/WPF integration

OneTrueError is a new startup which also is a member of Microsoft BizSpark. This post is about the client library for WinForms/WPF. It will catch and handle all uncaught exceptions automatically. The errors are also uploaded to our site for analysis to enable us to suggest possible solutions

Continue reading “OneTrueError and the WinForms/WPF integration”

OneTrueError and ASP.NET

OneTrueError is my new startup which also is a member of Microsoft BizSpark. This post is about the client library for ASP.NET (WebForms/MVC/WebAPI). It will catch and handle all uncaught exceptions automatically. The exceptions are also uploaded to our site for analysis to enable us to suggest possible solutions

dashboard2

Continue reading “OneTrueError and ASP.NET”

Alternative to IEnumerable for read-only collections

.NET 4.5 introduced a new interface which is great if you want to expose a collection as readonly.

The problem with IEnumerable<T> is that it’s forward only. i.e. there is no guarantee that you can traverse it multiple times. The collection size might also be unknown, depending on the implementation.

So if you want to expose a collection which can be traversed multiple times and where the size is know there is as of .NET 4.5 another alternative. And that’s IReadOnlyList<T>. It inherits another new interface called IReadOnlyCollection<out T>.

Code

public interface IReadOnlyCollection<out T> 
      : IEnumerable<T>, 
        IEnumerable
{
    int Count { get; }
}

public interface IReadOnlyList<out T> 
      : IReadOnlyCollection<T>
      , IEnumerable<T>
      , IEnumerable
{
    T this[int index] { get; }
}

Usage example

public class MyRepository
{
    public IReadOnlyList<User> FindUsers(string lastName)
    {
        // [...]
    }

    // [...]
}

Immutable collections should not implement mutable interfaces

I just read the new blog post about .NETs new mutable collections. It mostly looks really nice, but there is a major problem: They implement mutable interfaces like IList<T> which has an Add() method.

Continue reading “Immutable collections should not implement mutable interfaces”