Krzysztof Cwalina
Designing Reusable Frameworks
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API Design Myth: Exceptions are for "Exceptional Errors"
I was updating FDG section on exceptions. I added one anntation that I thought I would post here as well: KRZYSZTOF CWALINA One of the biggest misconceptions about exceptions is that they are for “exceptional conditions.” The reality is that they are
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Nullable<T> Usage Guidelines
These guidelines were just added as part of an update to the Framework Design Guidelines book ( upcomming 2nd edition ). Hope you find them useful. Nullable<T> is a simple type added to the .NET Framework 2.0. The type was designed to be able to
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Framework Design Guidelines Digest v2
Almost 4 years ago, I blogged about Framework Design Guidelines Digest . At that time, my blog engine did not support attaching files and I did not have a convenient online storage to put the document on, and so I asked people to email me if they want
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Framework Design Studio Released
When I was coming back from Mix 2007, I was bored on the plane and so started to write a dev tool. What a geeky thing to do on a plane. :-) The tool allows comparing two versions of an assembly to identify API differences: API additions and removals.
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Simulated Covariance for .NET Generics
I just wrote this pattern, but I am not sure if I should add it officially to the Framework Design Guidelines. It seems like a bit of a corner case scenario, though I do get questions about it from time to time. Anyway, let me know what you think. Different
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Job Openings on the .NET Framework Core Team
We have been incubating ideas about building a simple extensibility framework for some time. Now, as plans for the next version of the .NET Framework crystallize a bit more, we decided to productize the project. As a result, we have opened a job position
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Video Recording of "Framework Engineering: Architecting, Designing, and Developing Reusable Libraries"
I just received a video recording of a talk I did at the last TechEd. You can find the abstract below, and the WMV file can be downloaded from here . Hope you find it useful. [UPDATE: I attched the slides in xps format. The ppt file is 10x larger] Framework
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Framework Design Guidelines 2nd Edition
My blog was relatively silent for several weeks. First, I was traveling to Europe for the TechEd, then was busy at work, then the holiday break. It's time to go back to more regular posting. I will start with an announcement (or at least a more formal
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Framework design lecture avaliable for download
I have good news for all who asked about an off line version of the API design lecture I blogged about a few weeks ago . After literally a hundred emails and comments on the blog (thanks for pushing me to get this done), weeks of trying to get this setup,
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Nullable<bool> usage guideline
I am starting to work on some updates to the framework design guidelines related to new framework and language features added in .NET 2.0, 3.0, and 3.5. One of such additions are the nullable types (Nullable<T>). Coincidentally, somebody asked me
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Online lecture on API design
I gave a lecture on framework design at the Redmond’s Microsoft Research Center. They recorder and posted it on the Research Channel . You can see it here . It’s more than 3 hours long, but I think you will find it worth the time. Let me know what you
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How to Design Exception Hierarchies
I still get a lot of questions on how to design exception hierarchies, despite several attempts to describe it in talks, the FDG book, and in posts on this blog. Maybe the guidance gets lots in the in the complexities of the full guidance surrounding
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System.TimeZone2 Naming ... and related design guidelines
There is an interesting discussion on the BCL blog about a new BCL type called TimeZone2. Just take a look at the comments below the System.TimeZone2 Starter Guide post. The new type supersedes an existing type called TimeZone (which is obsolete now).
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Framewok Design Guidelines Wins Productivity Award
A couple of months ago, Brad blogged about the FDG book getting into the Jolt Award finals. The winners were just announced and we have won the Productivity Award! I am shocked … that Brad did not blogged this information first! :-) On that occasion,
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Channel 9 video showing a real usability study
Channel 9 just posted a video in which our API usability engineers talk about one of the studies they conducted recently, but what’s even more interesting, in part two of the story, they show a clip from an actual study where a participant writes a workflow
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