Brad Abrams
Design Guidelines, Managed code and the .NET Framework
February 2004 - Posts
Debug and Retail Builds
Over the weekend some of the big-brains on the CLR team (oh, and me too) are having a debate about introducing the concept debug and retail builds of the .NET Framework. The high level concept is to move some “code correctness” checks out
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A good compilation of new .NET Design Guidelines
Ken Brubaker has a good compilation of new .NET Design Guidelines .. Thanks. At his suggestion I also added a new category to my blog where you can see just those new guidelines we have recently added. Enjoy.
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More in Win32 Signtures
A while back I posted some thoughts on Win32 signatures… The CLR interop team has been hard at work figuring out the right solution, expect to see more soon. In the mean time check out these PInvoke signatures the C# team posttest a while back.
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A winner for my little quiz on NullReferenceException
In a previous post I asked I said that we throw a NullReferenceException when you try to access instance “state” (eg a field). What if you have an instance method that does not touch any instance state (for example an instance method that
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AV or NullReference Exception
In my comments Pavel ask: How does the CLR decide if a given AV should be converted to a NullReferenceException or not? Jonathan Keljo the PM in charge of the CLR exception story tells me that in v1 and v1.1, all AV's, regardless of the target address,
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Returning empty arrays vs nulls
I could have said it better myself… thanks Wes . Empty Arrays
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CLSCompliantAttribute and the Naming Conventions
How embarrassing --- the CLSCompliantAttribute, which I was the PM for back in the day, does not follow the naming convention . A reader pointed this out nicely in my comments . All I can say is that this attribute has very heavy dependencies across *
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More on Setting Environment variables
We had an internal thread about Setting Environment variables and someone posted a cool V1\V1.1 solution. One workaround is to use System.Management (WMI). This should work on all versions of .NET Framework with WMI installed on the OS. You would retrieve
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Why can't NullReferenceException tell you the type of the instance that was null?
If you have done much managed development you have run into a NullReferenceException more times that you’d care to count. The CLR throws this exception when you try to access instance state on null instance… One of your internal customers
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Windows Forms FileDialog
In my comments Kevin Westhead asks about the Windows Forms FileDialog. I was able to speak to grandpuba of Windows Forms, Mark Boulter who explained this as recommend a fix to the documentation: FileDialog is a detail of the implementation of OpenFileDialog
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BradA in Fresno...
I got my plans worked out … See you there! Microsoft Tech Talk II Software Development and the Microsoft Common Language Runtime Given by Brad Abrams, a Microsoft Lead Program Manager Tuesday 2/24/04 6:00 PM, University Business Center (UBC), Alice
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Rotor in university class room: Performance Analysis of O-O Systems
The course abstract is at http://csce.unl.edu/~witty/sp2004/csce496/ , the Rotor bit is "...students will examine the actual implementation of these runtime systems. We will use Microsoft CLI engine which is the core runtime infrastructure for .NET platform.
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Rico on Perf Analysis
Rico has some words for wisdom on how to (and not to) do performance analysis. Check it out: Bad Analysis Worse Than None
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DateTime Compatibility Issue
The BCL team is having some design discussions on how to fix a bug that was recently found. I thought you might want to chime in as some of the implications have wide applicability. Here is the thread from Anthony … comments welcome. I would like
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IsEnabled or Enabled
I actually got a chance to write a little WinFX code today, which was a lot of fun. But I did run across one issue that has been in the back of my mind for while. It is the “Is” prefix on Boolean properties. I started out by using the WinForms
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ArgumentNullException and ArgumentException
In my comments Jeff asks: I have a question, how was the decision for these 2 classes ctor parameters made... Constructor for ArgumentNullException public ArgumentNullException( string paramName, string message) Constructor for ArgumentException public
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serial port support in Whidbey
We keep getting lots of requests for serial port support in the .NET Framework. We are planning to have it in the next release of the .NET Framework. You can goto http://www.gotdotnet.com/team/clr/bcl/demos/demos.aspx , and check out the code in either
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Rotor BOF at VM'04
Michal Cierniak talks about it here . Who all is going?
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Curriculum Repository for managed code
http://new.msdnaa.net/curriculum/repository.aspx Looks like some good stuff. Anyone using this stuff? Anyone want to go to a university where they are using this stuff ;-)
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Software for Non-Profits
I just heared about http://www.techsoup.org . I am told non-profits can use this site to order MS software for “free”… although there seems to be some admin fees. Anyone using it? How do you like it?
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Casing for acronyms
In the comments of a recent post Frank Hileman suggests: I have seen, with acronyms, anything goes. I assumed there is no rule. We do have a rule and I believe it is reasonably well followed in the Framework. Do use PascalCasing or camelCasing for any
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Deploying the .NET Framework
Someone asked me this week for some best practices around deploying the .NET Framework on client machines. Unfortunately I don’t have a ton of experience with this. For the last big application I work on ( Terrarium ) we decided to simply pre-req’ed
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internal = public?
There was an interesting thread this week inside the firewall about compatibility concerns the .NET Framework (and by extension WinFX) has in light of the fact that you can you use reflection to find and even invoke private members. Here is the exact
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Style for the Design Guidelines Document
If you have been following the Design Guidelines updates I have done and the Design Guidelines document you will notice we use a pattern…. Nearly every rule begins with “ Do ”, “ Do not ”, “ Avoid ” or “
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Thoughts on the power of naming conventions
Ian has some good thoughts on naming conventions . I'll make sure the folks on the WinFX team hear this load and clear. I like this naming convention because it means that an important fact about the code leaps out at me.
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The PInvoke problem
I have been talking to the CLR interop team recently about some ideas to make life easier for developers using PInvoke. My hope is that with WinFx PInvoking out to the Win32 will be much more rare, but we have a while to go before we get there. In the
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Delegate and MulticastDelegate
Ever wonder what the difference between Delegate and MulticastDelegate ? You might think it has something to do with Multicasting right? Wrong. We abandoned the distinction between Delegate and MulticastDelegate towards the end of V1. At that time, it
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Design pattern for read-only vs. read-write collections
Interesting discussion over in WinFX land today, thought you might want to chime in: What is better from the standpoint of the design guidelines: 1) Single class FooCollection with an IsReadOnly property and an AsReadOnly method returning a FooCollection
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Why do interface names begin with "I"
I am in the having one of those very useless “what-should-we-have-done” debates with a guy on my team and I thought I suck you folks into it. It is around naming of interfaces with an “I” prefix. Something COM founded (I think,
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History around Pascal Casing and Camel Casing
In the initial design of the Framework we had hundreds of hours of debate about naming style. To facilitate these debates we coined a number of terms. With Anders Heilsberg (the original designer of Turbo Pascal ) a key member of the design team, it is
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Books by Brad Abrams
[2005] Framework Design Guidelines (First Edition)
[2005] .NET Framework Standard Library Annotated Reference, Volume 2
[2004] .NET Framework Standard Library Annotated Reference, Volume 1
[2004] Base Class Library Reference Poster
[2002] Programming in the .NET Environment
[2008] Framework Design Guidelines (second edition)
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