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• Getting sendmail to install/work for using php mail()

  - by harryg

  I'm running WordPress on a Ubuntu VPS. When WordPress tries to send an email like a password reset or registration email it never gets delivered. WordPress uses php's mail() function. I figure it's not working as my VPS didn't have sendmail installed. So I went into SSH and installed it with sudo apt-get install sendmail which appeared to succeed. Following more googled advice I edited the php.ini file to have the sendmail path. I located it as being /usr/sbin/sendmail which I believe is typical for many *nix servers. To check I browsed to this directory on FTP. The "sendmail" directory appears to be a shortcut. Is this correct/expected? Either way the php mail function is not working. I have created a phpinfo file and a test mail php file which contains just a mail() function with my email as the recipient. Note: my VPS doesn't yet have a domain, just an IP address. Would this affect sendmail functionality? My phpinfo is here for your reference: http://95.142.166.209/phpinfo.php Do I also need postfix? I don't think I have it... Here is some of the mail log. I executed the mail function towards the end: Nov 27 18:41:02 sergeserver sm-msp-queue[5450]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 19:00:01 sergeserver sm-msp-queue[5497]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 19:01:01 sergeserver sm-msp-queue[5497]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 19:20:01 sergeserver sm-msp-queue[5532]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 19:21:01 sergeserver sm-msp-queue[5532]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 19:40:01 sergeserver sm-msp-queue[5568]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 19:41:01 sergeserver sm-msp-queue[5568]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 20:00:01 sergeserver sm-msp-queue[5605]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 20:01:01 sergeserver sm-msp-queue[5605]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 20:20:01 sergeserver sm-msp-queue[5641]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 20:21:01 sergeserver sm-msp-queue[5641]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 20:40:01 sergeserver sm-msp-queue[5675]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 20:41:01 sergeserver sm-msp-queue[5675]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 21:00:01 sergeserver sm-msp-queue[5712]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 21:01:01 sergeserver sm-msp-queue[5712]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 21:20:02 sergeserver sm-msp-queue[5747]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 21:21:02 sergeserver sm-msp-queue[5747]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 21:40:01 sergeserver sm-msp-queue[5782]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 21:41:01 sergeserver sm-msp-queue[5782]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 22:00:01 sergeserver sm-msp-queue[5831]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 22:01:01 sergeserver sm-msp-queue[5831]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 22:20:01 sergeserver sm-msp-queue[5866]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 22:21:01 sergeserver sm-msp-queue[5866]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 22:37:19 sergeserver sendmail[5903]: My unqualified host name (sergeserver) unknown; sleeping for retry Nov 27 22:38:19 sergeserver sendmail[5903]: unable to qualify my own domain name (sergeserver) -- using short name Nov 27 22:38:19 sergeserver sendmail[5903]: qARLcJYI005903: from=adminftp, size=158, class=0, nrcpts=0, msgid=<201211272138.qARLcJYI005903@sergeserver>, relay=adminftp@localhost

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• The cable of my USB port hub is too short - what to do?

  - by Anna

  Hi, I just bought a new USB port hub "MSY USB 2.0 4-port hub". It has two inputs: A small USB entrance input for external power (?) The problem is that the cable that comes with the hub (small USB on one end, large USB on the other - to input into my computer), is too short for my needs. Is there a solution to this? buying a longer cable might be risky, I know that it might cause problems with power. Is there anything else I can do to make it work? Thanks.

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• What could cause a file system to spontaneously unmount or become invalid for a short time?

  - by Ichorus

  We've got DB2 LUW running on a RHEL box. We had a crash of DB2 and IBM came back and said that a file that DB2 was trying to access (through open64()) unmounted or became invalid. We have done nothing but restart the database and things seem to be running fine. Also, the file in question looks perfectly normal now: $ cd /db/log/TEAMS/tmsinst/NODE0000/TEAMS/T0000000/ $ ls -l total 557604 -rw------- 1 tmsinst tmsinst 570425344 Jan 14 10:24 C0000000.CAT $ file C0000000.CAT C0000000.CAT: data $ lsattr C0000000.CAT ------------- C0000000.CAT $ ls -l total 557604 -rw------- 1 tmsinst tmsinst 570425344 Jan 14 10:24 C0000000.CAT With those facts in hand (please correct me if I am mis-interpreting the data at hand) what could cause a file system to 'spontaneously unmount or become invalid for a short time'? What should my next step be? This is on Dell hardware and we ran their diagnostic tools against the hardware and it came back clean.

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• Best of “The Moth” 2013

  - by Daniel Moth

  As previously (2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012) the time has come again to look back over the year’s activities on this blog, and as predicted there were 3 themes 1. It has been just 15 months since I changed role from what at Microsoft we call an “Individual Contributor” (IC) to a managerial role where ICs report to me. Part of being a manager entails sharing career tips with your team and some of those I have put up on my blog over the last year (and hope to continue to next year): Effectiveness and Efficiency, Lead, Follow, or Get out of the way, and Perfect is the enemy of “Good Enough”. 2. It has also been a 15 months that I joined the Visual Studio Diagnostics team, and we have shipped many capabilities in Visual Studio 2013. I helped the members of my team blog about every single one and create videos of many, and then I created a table of contents pointing to all of their blog posts, so if you are interested in what I have been working on over the last year please follow the links from the master blog post here: Visual Studio 2013 Diagnostics Investments. We are busy working on future Visual Studio releases/updates and I will link to those when we are ready… 3. Finally, I used some of my free time (which is becoming eve so scarce) to do some device development and as part of that I shared a few thoughts and code: Debug.Assert replacement for Phone and Store apps, asynchrony is viral, and MyMessageBox for Phone and Store apps. To see what 2014 will bring to this blog, please subscribe using the link on the left… Happy New Year! Comments about this post by Daniel Moth welcome at the original blog.

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• Best of "The Moth" 2011

  - by Daniel Moth

  Once again (like in 2004, 2005, 2006, 2007, 2008, 2009, 2010) the time has come to wish you a Happy New Year and to share my favorite posts from the year we just left behind. 1. My first blog entry in January and last one in December were both about my Windows Phone app: Translator by Moth and Translator by Moth v2. In between, I shared a few code snippets for Windows Phone development including a watermark textbox, a scroll helper, an RTL helper and a network connectivity helper - there will be more coming in 2012. 2. Efficiently using Microsoft Office products is the hallmark of an efficient Program Manager (and not only), and I'll continue sharing tips on this blog in that area. An example from last year is tracking changes in SharePoint-hosted Word document. 3. Half-way through last year I moved from managing the parallel debugger team to managing the C++ AMP team (both of them in Visual Studio 11). That means I had to deprioritize sharing content on VS parallel debugging features (I promise to do that in 2012), and it also meant that I wrote a lot about C++ AMP. You'll need a few cups of coffee to go through all of it, and most of the links were aggregated on this single highly recommended post: Give a session on C++ AMP – here is how You can stay tuned for more by subscribing via one of the options on the left… Comments about this post by Daniel Moth welcome at the original blog.

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• ScrollViewer.EnsureVisible for Windows Phone

  - by Daniel Moth

  In my Translator By Moth app, on both the current and saved pivot pages the need arose to programmatically scroll to the bottom. In the former, case it is when a translation takes place (if the text is too long, I want to scroll to the bottom of the translation so the user can focus on that, and not their input text for translation). In the latter case it was when a new translation is saved (it is added to the bottom of the list, so scrolling is required to make it visible). On both pages a ScrollViewer is used. In my exploration of the APIs through intellisense and msdn I could not find a method that auto scrolled to the bottom. So I hacked together a solution where I added a blank textblock to the bottom of each page (within the ScrollViewer, but above the translated textblock and the saved list) and tried to make it scroll it into view from code. After searching the web I found a little algorithm that did most of what I wanted (sorry, I do not have the reference handy, but thank you whoever it was) that after minor tweaking I turned into an extension method for the ScrollViewer that is very easy to use: this.Scroller.EnsureVisible(this.BlankText); The method itself I share with you here: public static void EnsureVisible(this System.Windows.Controls.ScrollViewer scroller, System.Windows.UIElement uiElem) { System.Diagnostics.Debug.Assert(scroller != null); System.Diagnostics.Debug.Assert(uiElem != null); scroller.UpdateLayout(); double maxScrollPos = scroller.ExtentHeight - scroller.ViewportHeight; double scrollPos = scroller.VerticalOffset - scroller.TransformToVisual(uiElem).Transform(new System.Windows.Point(0, 0)).Y; if (scrollPos > maxScrollPos) scrollPos = maxScrollPos; else if (scrollPos < 0) scrollPos = 0; scroller.ScrollToVerticalOffset(scrollPos); } I am sure there are better ways, but this "worked for me" :-) Comments about this post by Daniel Moth welcome at the original blog.

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• Attend my Fusion sessions

  - by Daniel Moth

  The inaugural Fusion conference was 1 year ago in June 2011 and I was there doing a demo in the keynote, and also presenting a breakout session. If you look at the abstract and title for that session you won't see the term "C++ AMP" in there because the technology wasn't announced and we didn't want to spill the beans ahead of the keynote, where the technology was announced. It was only an announcement, we did not give any bits out, and in fact the first bits came three months later in September 2011 with the Beta following in February 2012. So it really feels great 1 year later, to be back at Fusion presenting two sessions on C++ AMP, demonstrating our progress from that announcement, to the Visual Studio 2012 Release Candidate that came out last week. If you are attending Fusion (in person or virtually later), be sure to watch my two-part session. Part 1 is PT-3601 on Tuesday 4pm and part 2 is PT-3602 on Wednesday 4pm. Here is the shared abstract for both parts: Harnessing GPU Compute with C++ AMP C++ AMP is an open specification for taking advantage of accelerators like the GPU. In this session we will explore the C++ AMP implementation in Microsoft Visual Studio 2012. After a quick overview of the technology understanding its goals and its differentiation compared with other approaches, we will dive into the programming model and its modern C++ API. This is a code heavy, interactive, two-part session, where every part of the library will be explained. Demos will include showing off the richest parallel and GPU debugging story on the market, in the upcoming Visual Studio release. See you there! Comments about this post by Daniel Moth welcome at the original blog.

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• BUILD apps that use C++ AMP

  - by Daniel Moth

  If you are a developer on the Microsoft platform, you are hopefully attending (live or virtually) the sessions of the BUILD conference, aka //build/ in Anaheim, CA. The conference sold out not long after it opened registration, and it achieved that without sharing *any* session details nor a meaningful agenda up until after the keynote today – impressive! I am speaking at BUILD and hope you'll catch my talk at 9am on Friday (the last day of the conference) at Marriott Elite 2 Ballroom. Session details follow. 802 - Taming GPU compute with C++ AMP Developers today inject parallelism into their compute-intensive applications in order to take advantage of multi-core CPU hardware. Beyond CPUs, however, compute accelerators such as general-purpose GPUs can provide orders of magnitude speed-ups for data parallel algorithms. How can you as a C++ developer fully utilize this heterogeneous hardware from your Visual Studio environment?  How can you benefit from this tremendous performance boost in your Visual C++ solutions without sacrificing developer productivity?  The answers will be presented in this session about C++ Accelerated Massive Parallelism. I'll be covering a lot of the material I've been recently blogging about on my blog that you are reading, which I have also indexed over on our team blog under the title: "C++ AMP in a nutshell". Comments about this post by Daniel Moth welcome at the original blog.

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• Visual Studio 11 not 2011

  - by Daniel Moth

  A little pet peeve of mine is when people incorrectly refer to the Developer Preview (or the upcoming Beta) as Visual Studio 2011 instead of the correct Visual Studio 11. The "11" refers to the version number (internally we call it Dev11). What the product will be called when it is released is anyone's guess (it could keep the name or it could have a year appended to it, or it could be something else, who knows). Even if it does have a year appended to the name, I think it is a safe bet it won't be last year! For reference, version 10 was the previous version of Visual Studio which happened to be released in 2010, hence it got the name Visual Studio 2010. That is what confuses new people to this product I guess... they think that the two-digit number matches the year, just because it coincided like that last year. (btw, internally we called it Dev10). For further reference, older releases were: Visual Studio 2008 (v9) aka "Orcas", Visual Studio 2005 (v8) aka "Whidbey", Visual Studio .NET 2003 (v7.1) aka "Everett", and Visual Studio .NET 2002 (v7) aka "Rainier". Before that, we were in the pre-.NET era with Visual Studio 6 (where the version and the product name matched, without the year appended to the name). So next time you hear someone saying "Visual Studio 2011", point them to this post for some mini-education... thanks. Comments about this post by Daniel Moth welcome at the original blog.

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• Start Debugging in Visual Studio

  - by Daniel Moth

  Every developer is familiar with hitting F5 and debugging their application, which starts their app with the Visual Studio debugger attached from the start (instead of attaching later). This is one way to achieve step 1 of the Live Debugging process. Hitting F5, F11, Ctrl+F10 and the other ways to start the process under the debugger is covered in this MSDN "How To". The way you configure the debugging experience, before you hit F5, is by selecting the "Project" and then the "Properties" menu (Alt+F7 on my keyboard bindings). Dependent on your project type there are different options, but if you browse to the Debug (or Debugging) node in the properties page you'll have a way to select local or remote machine debugging, what debug engines to use, command line arguments to use during debugging etc. Currently the .NET and C++ project systems are different, but one would hope that one day they would be unified to use the same mechanism and UI (I don't work on that product team so I have no knowledge of whether that is a goal or if it will ever happen). Personally I like the C++ one better, here is what it looks like (and it is described on this MSDN page): If you were following along in the "Attach to Process" blog post, the equivalent to the "Select Code Type" dialog is the "Debugger Type" dropdown: that is how you change the debug engine. Some of the debugger properties options appear on the standard toolbar in VS. With Visual Studio 11, the Debug Type option has been added to the toolbar If you don't see that in your installation, customize the toolbar to show it - VS 11 tends to be conservative in what you see by default, especially for the non-C++ Visual Studio profiles. Comments about this post by Daniel Moth welcome at the original blog.

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• Debug.Assert replacement for Phone and Store apps

  - by Daniel Moth

  I don’t know about you, but all my code is, and always has been, littered with Debug.Assert statements. I think it all started way back in my (short-lived, but impactful to me) Eiffel days, when I was applying Design by Contract. Anyway, I can’t live without Debug.Assert. Imagine my dismay when I upgraded my Windows Phone 7.x app (Translator By Moth) to Windows Phone 8 and discovered that my Debug.Assert statements would not display anything on the target and would not break in the debugger any longer! Luckily, the solution was simple and in this post I share it with you – feel free to teak it to meet your needs. Steps to use Add a new code file to your project, delete all its contents, and paste in the code from MyDebug.cs Perform a global search in your solution replacing Debug.Assert with MyDebug.Assert Build solution and test Now, I do not know why this functionality was broken, but I do know that it exhibits the same broken characteristics for Windows Store apps. There is a simple workaround there to use Contract.Assert which does display a message and offers an option to break in the debugger (although it doesn’t output the message to the Output window). Because I plan on code sharing between Phone and Windows 8 projects, I prefer to have the conditional compilation centralized, so I added the Contract.Assert workaround directly in MyDebug class, so that you can use this class for both platforms – enjoy and enhance! Comments about this post by Daniel Moth welcome at the original blog.

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• Best of "The Moth" 2012

  - by Daniel Moth

  As with previous years (2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011) I’d like to wish you a Happy New Year and share a quick review of my blog posts from 2012 (plus speculate on my 2013 blog focus). 1. Like 2011, my professional energy in 2012 was dominated by C++ AMP including articles, blog posts, demos, slides, and screencasts. I summarized that over two posts on the official team blog that I linked to from my blog post here titled: “The last word on C++ AMP”, which also subtly hinted at my change of role which I confirmed in my other post titled “Visual Studio Continued Excitement”. 2. Even before I moved to the Visual Studio Diagnostics team in September, earlier in the year I had started sharing blog posts with my thoughts on that space, something I expect to continue in the new year. You can read some of that in these posts: The way I think about Diagnostic tools, Live Debugging, Attach to Process in Visual Studio, Start Debugging in Visual Studio, Visual Studio Exceptions dialogs. 3. What you should also expect to see more of is thoughts, tips, checklists, etc around Professional Communication and on how to be more efficient and effective with that, e.g. Link instead of Attaching, Sending Outlook Invites, Responding to Invites, and OOF checklist. 4. As always, I sometimes share random information, and noteworthy from 2012 is the one where I outlined the Visual Studio versioning story (“Visual Studio 11 not 2011”, and after that post VS 11 was officially baptized VS2012) and the one on “How I Record Screencasts”. Looking back, unlike 2011 there were no posts in 2012 related to device development, e.g. for Windows Phone. Expect that to be rectified in 2013 as I hope to find more time for such coding… stay tuned by subscribing using the link on the left. Comments about this post by Daniel Moth welcome at the original blog.

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• Attend my GTC sessions

  - by Daniel Moth

  The last GTC conference in the US was 2 years ago and I was there as an attendee. You may recall from that blog post that we were running UX studies at the time. It really feels great 2 years later, to be back at GTC presenting two sessions on C++ AMP, demonstrating our progress that includes input from those early studies. If you are attending GTC (in person or virtually later), be sure to watch my two-part session. Part 1 is S0242 on Wednesday 5pm and part 2 is S0244 on Thursday 10am. Here is the shared abstract for both parts: Harnessing GPU Compute with C++ AMP C++ AMP is an open specification for taking advantage of accelerators like the GPU. In this session we will explore the C++ AMP implementation in Microsoft Visual Studio 11 Beta. After a quick overview of the technology understanding its goals and its differentiation compared with other approaches, we will dive into the programming model and its modern C++ API. This is a code heavy, interactive, two-part session, where every part of the library will be explained. Demos will include showing off the richest parallel and GPU debugging story on the market, in the upcoming Visual Studio release. See you there! Comments about this post by Daniel Moth welcome at the original blog.

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• Start Debugging in Visual Studio

  - by Daniel Moth

  Every developer is familiar with hitting F5 and debugging their application, which starts their app with the Visual Studio debugger attached from the start (instead of attaching later). This is one way to achieve step 1 of the Live Debugging process. Hitting F5, F11, Ctrl+F10 and the other ways to start the process under the debugger is covered in this MSDN "How To". The way you configure the debugging experience, before you hit F5, is by selecting the "Project" and then the "Properties" menu (Alt+F7 on my keyboard bindings). Dependent on your project type there are different options, but if you browse to the Debug (or Debugging) node in the properties page you'll have a way to select local or remote machine debugging, what debug engines to use, command line arguments to use during debugging etc. Currently the .NET and C++ project systems are different, but one would hope that one day they would be unified to use the same mechanism and UI (I don't work on that product team so I have no knowledge of whether that is a goal or if it will ever happen). Personally I like the C++ one better, here is what it looks like (and it is described on this MSDN page): If you were following along in the "Attach to Process" blog post, the equivalent to the "Select Code Type" dialog is the "Debugger Type" dropdown: that is how you change the debug engine. Some of the debugger properties options appear on the standard toolbar in VS. With Visual Studio 11, the Debug Type option has been added to the toolbar If you don't see that in your installation, customize the toolbar to show it - VS 11 tends to be conservative in what you see by default, especially for the non-C++ Visual Studio profiles. Comments about this post by Daniel Moth welcome at the original blog.

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• .NET access to the GPU for compute purposes

  - by Daniel Moth

  In the distant past I talked about GPGPU and Microsoft's then approach of DirectCompute. Since then of course we now have C++ AMP coming out with Visual Studio 11, so there is a mainstream easier way for developers to access the GPU for compute purposes, using C++. The question occasionally arises of how can a .NET developer access the GPU for compute purposes from their C# (or VB) code. The answer is by interoping from the managed code to a native DLL and in the native DLL use C++ AMP. As a long term .NET developer myself, I can tell you this is straightforward. Sure, there could have been a managed wrapper for C++ AMP, but honestly that is the reason we have interop – it doesn't make much sense to invest resources to solve a problem that is already solved (most developer customers would prefer investments in other areas of Visual Studio!). Besides, interoping from C# to C++ is much easier than interoping to some of the other older approaches of GPGPU programming ;-) To help you get started with the interop approach, Igor Ostrovsky has previously shared the "Hello World" version of interoping from C# to C++ AMP in his blog post: How to use C++ AMP from C# …we then were asked specifically about how to interop from C# to C++ AMP in a Metro style application on Windows 8, so Igor delivered again with this post: How to use C++ AMP from C# using WinRT Have fun! Comments about this post by Daniel Moth welcome at the original blog.

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• Links to C++ AMP and other content

  - by Daniel Moth

  A few links you may be interested in. This week was a big week for Microsoft with the unveiling of the developer story for Windows 8 Metro-style apps. The recorded sessions are available on channel9. Note that you can use C++ AMP in both Metro and desktop apps, and in fact even on Windows 7. Visual Studio 11 Developer Preview is now available. To download it, here is a link to a link plus context. As I previously shared, I was also speaking at BUILD on C++ AMP, and here is a direct link to that recording. Kate Gregory has started a book on C++ AMP and she has graciously shared the first 1-2 draft chapters for free online – get the link from her blog post which is also where you can leave her feedback. As Yossi Levanoni (the architect of C++ AMP), posted on our team blog, the C++ AMP article that he and I co-authored is now available at Dr Dobbs. Important reminder: Questions on C++ AMP should be posted at http://social.msdn.microsoft.com/Forums/en/parallelcppnative/threads Comments about this post by Daniel Moth welcome at the original blog.

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• Visual Studio Continued Excitement

  - by Daniel Moth

  As you know Visual Studio 2012 RTM’d and then became available in August (Soma’s blog posts told you that here and here), and the VS2012 launch was earlier this month (Soma also told you that here). Every time a release of Visual Studio takes place I am very excited, since this has been my development tool of choice for almost my entire career (from many years before I joined Microsoft). I am doubly excited with this release since it is the second version of Visual Studio that I have worked on and contributed major features to, now that I’ve been in the developer division (DevDiv) for over 4 years. Additionally, I am very excited about the new era that VS2012 starts with VSUpdate for continued customer value: instead of waiting for the next major version of VS to get new features, there is new infrastructure to enable friction-free updates. The first update will ship before the end of this year, and you can read more about it at Brian’s blog post. I also noticed that a CTP of the first quarterly update is available to download here. In the last two months, the VS2012 family of products we all worked on in DevDiv shipped, coinciding with the end of the Microsoft financial/review year, and naturally followed by a couple of organizational changes (e.g. see Jason’s blog post)… On a personal level, this meant that I was very lucky to have an opportunity present itself to me that I simply could not turn down, so I grabbed it! I’ll still be working on Visual Studio, but not in the Parallel Computing part of the C++ team; instead I will be PM-leading the VS Diagnostics team… Stay tuned for details of what is coming in that space, in the VS updates and in the next major VS release, as I am able to share them… Comments about this post by Daniel Moth welcome at the original blog.

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• Attend my Tech Ed 2014 session: Debugging Tips and Tricks

  - by Daniel Moth

  Just a week away, at Tech Ed 2014 NA in Houston Texas, I will be giving a demo presentation that you will not want to miss (assuming you code in Visual Studio). Add it to your calendar now: DEV-B352 Debugging Tips and Tricks in Visual Studio 2013 (link) Monday, May 12 1:15-2:30 PM, Room: General Assembly C As a developer, regardless of your programming language or the platform that you target, you use the debugger on a daily basis. Come to this all-demo session to learn how to make the most of the Visual Studio debugger, and hence be more productive and effective in your everyday development. We tour almost all of the debugger surface and many of its commands, throwing in tips and tricks as we go along, and also calling out what is brand new in the latest version of the debugger in Microsoft Visual Studio 2013. Whatever your experience level, you are guaranteed to leave with new knowledge of debugger features that you will want to use immediately when you are back at your computer!   I am also co-presenting another session later in the week. DEV-B313 Diagnosing Issues in Windows Phone 8.1 XAML Applications Using Visual Studio 2013 (link) Thursday, May 15 10:15-11:30 AM, Room: 340 Come to this demo-driven session to learn how to use the latest diagnostic tools in Visual Studio 2013 to make your Windows Phone 8.1 XAML apps reliable, fast, and efficient. Learn how to make the most of existing capabilities in the debugger as well as new debugging features for diagnosing correctness issues. Also, see the Visual Studio Performance and Diagnostics hub in action with its performance analysis tools for diagnosing CPU usage, memory usage, and energy consumption. The techniques covered in this session apply equally well for Windows Store apps as well as Windows Phone Store apps, so all your device development needs will be covered.   Links to both sessions from my Tech Ed speaker page. See you there! Comments about this post by Daniel Moth welcome at the original blog.

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• MyMessageBox for Phone and Store apps

  - by Daniel Moth

  I am sharing a class I use for both my Windows Phone 8 and Windows Store app projects. Background and my requirements For my Windows Phone 7 projects two years ago I wrote an improved custom MessageBox class that preserves the well-known MessageBox interface while offering several advantages. I documented those and shared it for Windows Phone 7 here: Guide.BeginShowMessageBox wrapper. Aside: With Windows Phone 8 we can now use the async/await feature out of the box without taking a dependency on additional/separate pre-release software. As I try to share code between my existing Windows Phone 8 projects and my new Windows Store app projects, I wanted to preserve the calling code, so I decided to wrap the WinRT MessageDialog class in a custom class to present the same MessageBox interface to my codebase. BUT. The MessageDialog class has to be called with the await keyword preceding it (which as we know is viral) which means all my calling code will also have to use await. Which in turn means that I have to change my MessageBox wrapper to present the same interface to the shared codebase and be callable with await… for both Windows Phone projects and Windows Store app projects. Solution The solution is what the requirements above outlined: a single code file with a MessageBox class that you can drop in your project, regardless of whether it targets Windows Phone 8, or Windows 8 Store apps or both. Just call any of its static Show functions using await and dependent on the overload check the return type to see which button the user chose.// example from http://www.danielmoth.com/Blog/GuideBeginShowMessageBox-Wrapper.aspx if (await MyMessageBox.Show("my message", "my caption", "ok, got it", "that sucks") == MyMessageBoxResult.Button1) { // Do something Debug.WriteLine("OK"); } The class can be downloaded from the bottom of my older blog post. Comments about this post by Daniel Moth welcome at the original blog.

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• The last word on C++ AMP...

  - by Daniel Moth

  Well, not the last word, but the last blog post I plan to do here on that topic. Over the last 12 months, I have published 45 blog posts related to C++ AMP on the Parallel Programming in Native Code, and the rest of the team has published even more. Occasionally I'll link to some of them from my own blog here, but today I decided to stop doing that - so if you relied on my personal blog pointing you to C++ AMP content, it is time you subscribed to the msdn blog. I will continue to blog about other topics here of course, so stay tuned. So, for the last time, I encourage you to read the latest two blog posts I published on the team blog bringing together essential reading material on C++ AMP Learn C++ AMP - a collection of links to take you from zero to hero. Present on C++ AMP - a walkthrough on how to give a presentation including slides. Got questions on C++ AMP? Hit the msdn forum! Comments about this post by Daniel Moth welcome at the original blog.

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• Casting a char to an unsigned short: what happens behind the scenes?

  - by hb

  Given this field: char lookup_ext[8192] = {0}; // Gets filled later And this statement: unsigned short *slt = (unsigned short*) lookup_ext; What happens behind the scenes? lookup_ext[1669] returns 67 = 0100 0011 (C), lookup_ext[1670] returns 78 = 0100 1110 (N) and lookup_ext[1671] returns 68 = 0100 0100 (D); yet slt[1670] returns 18273 = 0100 0111 0110 0001. I'm trying to port this to C#, so besides an easy way out of this, I'm also wondering what really happens here. Been a while since I used C++ regularly. Thanks!

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• How do I split a short into its two bytes ?

  - by aPoC

  Hi. I have to split up a short into its two bytes. They have to be in Network order. I need that for a small server telling the current size of the rest packet's data. List<byte> o = new List<byte>(); o.Add(0x03); // here this short o.AddRange(MapData); o.Add(0xFF); Send(o);

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• byte and short data types in Java can accept the value outside the range by explicit cast. The higher data types however can not. Why?

  - by Lion

  Let's consider the following expressions in Java. byte a = 32; byte b = (byte) 250; int i = a + b; This is valid in Java even though the expression byte b = (byte) 250; is forced to assign the value 250 to b which is outside the range of the type byte. Therefore, b is assigned -6 and consequently i is assigned the value 26 through the statement int i = a + b;. The same thing is possible with short as follows. short s1=(short) 567889999; Although the specified value is outside the range of short, this statement is legal. The same thing is however wrong with higher data types such int, double, folat etc and hence, the following case is invalid and causes a compile-time error. int z=2147483648; This is illegal, since the range of int in Java is from -2,147,483,648 to 2147483647 which the above statement exceeds and issues a compile-time error. Why is such not wrong with byte and short data types in Java?

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• How to re-arrange Excel database from 1 long row, into 3 short rows of unequal lengths and automatically repeat the process?

  - by user326884

  This question is an extension/continuation of my previous question at How to re-arrange Excel database from 1 long row, into 3 short rows and automatically repeat the process? which was answered by Jason Lewis of which I'm grateful. But being a dummy in "Indirect' Excel function, I need assistance again : For example :- In Sheet A, Row 1 has the following data in each cell (all together 72 cells occupied): A1 B1 C1 D1 E1 F1 G1 H1 I1 J1 K1 L1 M1 N1 O1 P1 Q1 R1 S1 T1 U1 V1 W1 X1 Y1 Z1 AA1 AB1 AC1 AD1 AE1 AF1 AG1 AH1 AI1 AJ1 AK1 AL1 AM1 AN1 AO1 AP1 AQ1 AR1 AS1 AT1 AU1 AV1 AW1 AX1 AY1 AZ1 BA1 BB1 BC1 BD1 BE1 BF1 BG1 BH1 BI1 BJ1 BK1 BL1 BM1 BN1 BO1 BP1 BQ1 BR1 BS1 BT1 To be re-arranged into Sheet B in the following format: Row 1 : A1 B1 C1 D1 E1 F1 G1 H1 I1 J1 K1 L1 M1 N1 O1 P1 Q1 R1 S1 T1 U1 V1 W1 X1 Y1 Z1 AA1 AB1 AC1 AD1 AE1 AF1 AG1 AH1 AI1 Row 2 : AJ1 AK1 AL1 AM1 AN1 AO1 AP1 AQ1 AR1 AS1 AT1 AU1 AV1 AW1 AX1 AY1 AZ1 BA1 BB1 BC1 BD1 BE1 BF1 BG1 BH1 BI1 BJ1 BK1 Row 3 : BL1 BM1 BN1 BO1 BP1 BQ1 BR1 BS1 BT1 The Sheet A (database sheet) has a lot of rows (example 3,000 rows, each rows has 72 cells occupied with data), hence the Sheet B (reformatted database) is estimated to have 9,000 rows (i.e. 3 x 3,000) of unequal lengths. Thanking you in anticipation of your speedy response.

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• How to short-circuit Eclipse AutoComplete when "by relevance" Sorting is enabled?

  - by JRtim

  I know there's a number of autocomplete articles scattered around stack and eclipse relevant communities. I haven't seen a solution that I have been able to make work. Essentially it goes like this... I like sorting by relevance (since it usually has a decent priority), but sometimes I want to short circuit the autocomplete without having to hit x 2. If I have a class that has a couple methods like, getThis(), getThat, and get(), and eclipse picks up that I usually use getThis(), but every once in a while I want the get() method. So I type "Class" "period" "get(" -- whoops eclipse just filled in getThis(). When the sorting is alphabetically, this isn't an issue, but "by relevance" is a nice default. Just wondering if I'm missing the boat on something. Obviously one solution is to increase the latency on the autocomplete popup, but get() might just be an example. There might a situation where the method I want is a few parameters and maybe more than 3 keystrokes. Thank you.

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