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• Forum engine with full LDAP integration [closed]

  - by Andrian Nord

  We are looking for forum engine which may actually maintain user data into LDAP, maybe via mods. Core point is about ability to maintain the data, i.e. all user profile settings, like nickname, password, email, avatar, birthday and others (preferably configurable). One example of good ldap integration, level of which I'm expecting, is drupal's ldap integration, which allows to map any user's attribute into ldap and keeps it in sync with database. Year ago I've done a small research over existing Free&FOSS engines and find out few forum engines with LDAP integration, namely SFM, phpBB and something else. The most maintained solution were provided by phpBB3, which supports LDAP integration out-of-box, but it is unable to sync data with changes in LDAP server made by other software. Actually it wasn't even propagating changes back, I'm not saying about ability to map additional attributes (other than name/password/email). Also, I haven't found any forum with architecture which have proper abstraction over user settings, thus I doubt that this engines (including phpBB) are possible to mod such functionality without introducing dramatic changes into core codebase. More recent research showed that even some commercial software, like IPB is unable to keep it's database synced with LDAP directory and map additional attributes. In other words, all support I've seen so far is simple user creation upon first user's login, which is not good for us, as forum is not primary site and should not maintain it's own users base (to reduce risk of possible collisions). LDAP import is required due to many other services (ftp, email, jabber, drupal site) using same users base. Currently we have forum embedded into Drupal site, but we are unsatisfied with it's features. BTW, we are using Linux and this is not duplicate of this question, as it's author seems to be satisfied with behaviour described above. So, my question is: Are there any (preferably FOSS&free) forum engines that may import, export, keep in sync, or otherwise integrade with LDAP user database (preferably with ability to map additional fields to ldap attributes)?

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• Oracle JDK 7u10 released with new security features

  - by Henrik Stahl

  A few days ago, we released JRE and JDK 7 update 10. This release adds support for the following new platforms: Windows 8 on x86-64. Note that Modern UI (aka Metro) mode is not supported. Internet Explorer 10 on Windows 8. Mac OS X 10.8 (Mountain Lion) This release also introduces new features that provide enhanced security for Java applet and webstart applications, specifically: The Java runtime tracks if it is updated to the latest security baseline. If you try to execute an unsigned applet with an outdated version of Java, a warning dialog will prompt you to update before running the applet. The Java runtime includes a hardcoded best before date. It is assumed that a new version will be released before this date. If the client has not been able to check for an update prior to this date, the Java runtime will assume that it is insecure and start warning the user prior to executing any applets. The Java control panel now includes an option to set the desired security level on a low-medium-high-very high scale, as well as an option to disable Java applets and webstart entirely. This level controls things such as if the Java runtime is allowed to execute unsigned code, and if so what type of warning will be displayed to the user. More details on the security settings can be found in the documentation. See below for a sample screenshot. The new update of the JRE and the JDK are available via OTN. To learn more about the release please visit the release notes.

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• software architecture (OO design) refresher course

  - by PeterT

  I am lead developer and team lead in a small RAD team. Deadlines are tight and we have to release often, which we do, and this is what keep the business happy. While we (the development team) are trying to maintain the quality of the code (clean and short methods), I can't help but notice that the overall quality of the OO design&architecture is getting worse over the time - the library we are working on is gradually reducing itself to a "bag of functions". Well, we try to use the design patterns, but since we don't really have much time for a design as such we are mostly using the creational ones. I have read Code Complete / Design Patterns (GOF & enterprise) / Progmatic Programmer / and many books from Effective XXX series. Should I re-read them again as I have read them a long time ago and forgotten quite a lot, or there are other / better OO design / software architeture books been published since then which I should definitely read? Any ideas, recommendations on how can I get the situation under control and start improving the architecture. The way I see it - I will start improving the architectural / design quality of software components I am working on and then will start helping other team members once I find what is working for me.

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• Duplicity can't connect to CloudFiles "Network is unreachable"

  - by jwandborg

  Whenever I click "Backup now" in the Backup GUI, the smaller "Back Up" window opends, and after a while I get the following error message: Traceback (most recent call last): File "/usr/bin/duplicity", line 1359, in with_tempdir(main) File "/usr/bin/duplicity", line 1342, in with_tempdir fn() File "/usr/bin/duplicity", line 1202, in main action = commandline.ProcessCommandLine(sys.argv[1:]) File "/usr/lib/python2.7/dist-packages/duplicity/commandline.py", line 942, in ProcessCommandLine globals.backend = backend.get_backend(args[0]) File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 156, in get_backend return _backends[pu.scheme](pu) File "/usr/lib/python2.7/dist-packages/duplicity/backends/cloudfilesbackend.py", line 70, in __init__ self.container = conn.create_container(container) File "/usr/lib/python2.7/dist-packages/cloudfiles/connection.py", line 250, in create_container response = self.make_request('PUT', [container_name]) File "/usr/lib/python2.7/dist-packages/cloudfiles/connection.py", line 189, in make_request response = retry_request() File "/usr/lib/python2.7/dist-packages/cloudfiles/connection.py", line 182, in retry_request self.connection.request(method, path, data, headers) File "/usr/lib/python2.7/httplib.py", line 955, in request self._send_request(method, url, body, headers) File "/usr/lib/python2.7/httplib.py", line 989, in _send_request self.endheaders(body) File "/usr/lib/python2.7/httplib.py", line 951, in endheaders self._send_output(message_body) File "/usr/lib/python2.7/httplib.py", line 811, in _send_output self.send(msg) File "/usr/lib/python2.7/httplib.py", line 773, in send self.connect() File "/usr/lib/python2.7/httplib.py", line 1154, in connect self.timeout, self.source_address) File "/usr/lib/python2.7/socket.py", line 571, in create_connection raise err error: [Errno 101] Network is unreachable I use Rackspace CloudFiles as a storage backend, last backup was 3 days ago (successful. I have not changed any settings since then.

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• Be the surgeon

  - by Rob Farley

  It’s a phrase I use often, especially when teaching, and I wish I had realised the concept years earlier. (And of course, fits with this month’s T-SQL Tuesday topic, hosted by Argenis Fernandez) When I’m sick enough to go to the doctor, I see a GP. I used to typically see the same guy, but he’s moved on now. However, when he has been able to roughly identify the area of the problem, I get referred to a specialist, sometimes a surgeon. Being a surgeon requires a refined set of skills. It’s why they often don’t like to be called “Doctor”, and prefer the traditional “Mister” (the history is that the doctor used to make the diagnosis, and then hand the patient over to the person who didn’t have a doctorate, but rather was an expert cutter, typically from a background in butchering). But if you ask the surgeon about the pain you have in your leg sometimes, you’ll get told to ask your GP. It’s not that your surgeon isn’t interested – they just don’t know the answer. IT is the same now. That wasn’t something that I really understood when I got out of university. I knew there was a lot to know about IT – I’d just done an honours degree in it. But I also knew that I’d done well in just about all my subjects, and felt like I had a handle on everything. I got into developing, and still felt that having a good level of understanding about every aspect of IT was a good thing. This got me through for the first six or seven years of my career. But then I started to realise that I couldn’t compete. I’d moved into management, and was spending my days running projects, rather than writing code. The kids were getting older. I’d had a bad back injury (ask anyone with chronic pain how it affects  your ability to concentrate, retain information, etc). But most of all, IT was getting larger. I knew kids without lives who knew more than I did. And I felt like I could easily identify people who were better than me in whatever area I could think of. Except writing queries (this was before I discovered technical communities, and people like Paul White and Dave Ballantyne). And so I figured I’d specialise. I wish I’d done it years earlier. Now, I can tell you plenty of people who are better than me at any area you can pick. But there are also more people who might consider listing me in some of their lists too. If I’d stayed the GP, I’d be stuck in management, and finding that there were better managers than me too. If you’re reading this, SQL could well be your thing. But it might not be either. Your thing might not even be in IT. Find out, and then see if you can be a world-beater at it. But it gets even better, because you can find other people to complement the things that you’re not so good at. My company, LobsterPot Solutions, has six people in it at the moment. I’ve hand-picked those six people, along with the one who quit. The great thing about it is that I’ve been able to pick people who don’t necessarily specialise in the same way as me. I don’t write their T-SQL for them – generally they’re good enough at that themselves. But I’m on-hand if needed. Consider Roger Noble, for example. He’s doing stuff in HTML5 and jQuery that I could never dream of doing to create an amazing HTML5 version of PivotViewer. Or Ashley Sewell, a guy who does project management far better than I do. I could go on. My team is brilliant, and I love them to bits. We’re all surgeons, and when we work together, I like to think we’re pretty good! @rob_farley

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• MDX needs a function or macro syntax

  - by Darren Gosbell

  I was having an interesting discussion with a few people about the impact of named sets on performance (the same discussion noted by Chris Webb here: http://cwebbbi.wordpress.com/2011/03/16/referencing-named-sets-in-calculations). And apparently the core of the performance issue comes down to the way named sets are materialized within the SSAS engine. Which lead me to the thought that what we really need is a syntax for declaring a non-materialized set or to take this even further a way of declaring an MDX expression as function or macro so that it can be re-used in multiple places. Because sometimes you do want the set materialised, such as when you use an ordered set for calculating rankings. But a lot of the time we just want to make our MDX modular and want to avoid having to repeat the same code over and over. I did some searches on connect and could not find any similar suggestions so I posted one here: https://connect.microsoft.com/SQLServer/feedback/details/651646/mdx-macro-or-function-syntax Although apparently I did not search quite hard enough as Chris Webb made a similar suggestion some time ago, although he also included a request for true MDX stored procedures (not the .Net style stored procs that we have at the moment): https://connect.microsoft.com/SQLServer/feedback/details/473694/create-parameterised-queries-and-functions-on-the-server Chris also pointed out this post that he did last year http://cwebbbi.wordpress.com/2010/09/13/iccube/ where he pointed out that the icCube product already has this sort of functionality. So if you think either or both of these suggestions is a good idea then I would encourage you to click on the links and vote for them.

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• Why the recent shift to removing/omitting semicolons from Javascript?

  - by Jonathan

  It seems to be fashionable recently to omit semicolons from Javascript. There was a blog post a few years ago emphasising that in Javascript, semicolons are optional and the gist of the post seemed to be that you shouldn't bother with them because they're unnecessary. The post, widely cited, doesn't give any compelling reasons not to use them, just that leaving them out has few side-effects. Even GitHub has jumped on the no-semicolon bandwagon, requiring their omission in any internally-developed code, and a recent commit to the zepto.js project by its maintainer has removed all semicolons from the codebase. His chief justifications were: it's a matter of preference for his team; less typing Are there other good reasons to leave them out? Frankly I can see no reason to omit them, and certainly no reason to go back over code to erase them. It also goes against (years of) recommended practice, which I don't really buy the "cargo cult" argument for. So, why all the recent semicolon-hate? Is there a shortage looming? Or is this just the latest Javascript fad?

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• Animating DOM elements vs refreshing a single Canvas

  - by mgibsonbr

  A few years ago, when the HTML Canvas element was still kinda fresh, I wrote a small game in a rather "unusual" way: each game element had its own canvas, and frequently animated elements even had multiple canvases, one for each animation sprite. This way, the translation would be done by manipulating the DOM position of the canvases, while the sprite animation would consist of altering the visibility of the already drawn canvases. (z-indexes, of course, were the tricky part) It worked like a charm: even in IE6 with excanvas it showed a decent performance, and everything was rather consistent between browsers, including some smartphones. Now I'm thinking in writing a larger game engine in the same fashion, so I'm wondering whether it would be a good idea to do so in the current context (with all the advances in browsers and so on). I know I'm trading memory for time, so this needs to be customizable (even at runtime) for each machine the game will be running. But I believe using separate canvases would also help to avoid the game "freezing" on CPU spikes, since the translation would still happen even if the redraws lag for a while. Besides, the browsers' rendering engines are already optimized in may ways, so I'm guessing this scheme would also reduce the load on the CPU (in contrast to doing everything in JavaScript - specially the less optimized ones). It looks good in my head, but I'd like to hear the opinion of more experienced people before proceeding further. Is there any known drawback of doing this? I'm particulartly unexperienced in dealing with the GPU, so I wonder whether this "trick" would nullify any benefit of using a single, big canvas. Or maybe on modern devices it's overkill (though I'm skeptic about the claims that canvas+js - especially WebGL - will ever be a good alternative to native code). Any thoughts?

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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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• Finish feature reverted commits from develop

  - by marco-fiset

  I am using git as a version control system, and using git-flow as the branching model. I started a feature branch some weeks ago in order to maintain the system in a clean state while developping that feature. The main development continued on the develop branch, and changes from develop were merged periodically into the feature, to keep it up to date as much as possible. However came the time where the feature was finished, and I used git-flow's finish feature to merge the feature back into develop. The merge was successfully done, but then I found out that some of the commits I made in develop were reverted by the merge commit! Nowhere in develop or in the feature branch were these changes reverted, I can't see any commit that overwrote them. I just can't find anything. The only theory I have for the moment is that git is failing on me, but that would be extremely unlikely. Maybe I did some kind of wrong manipulation that made this situation come true? I can trace back in the history when the commit was made. I can see that the changes from that commit were reverted by the merge commit. Nowhere in the branch I see a commit that reverts those changes. Yet they were reverted. How is this even possible?

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• Get a culture specific list of month names

  - by erwin21

  A while ago I found a clever way to retrieve a dynamic culture specific list of months names in C# with LINQ. 1: var months = Enumerable.Range(1, 12) 2: .Select(i => new 3: { 4: Month = i.ToString(), 5: MonthName = new DateTime(1, i, 1).ToString("MMMM") 6: }) 7: .ToList(); .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } It’s fairly simple, for a range of numbers from 1 to 12 a DateTime object is created (year and day doesn’t matter in this case), then the date time object formatted to a full month name with ToString(“MMMM”). In this example an anonymous object is created with a Month and MonthName property. You can use this solution to populate your dropdown list with months or to display a user friendly month name.

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• Unity Launcher only runs once - requires lightdm restart before it runs again

  - by Don

  I have an intermittent problem that just started showing up several days ago. I am running 11.10 and all updates are current. I first saw the symptom with a custom version of the "Home" nautilus-home.desktop file I created in ~/.local.share/applications. I added a few static shortcuts to specific folders. What I found was, clikcing the icon once would open up my home folder, but after closing that nautilus window, clicking the icon again did nothing (did not even show icon backlight animation). However, I could right click on the same icon and access my short cuts as many times as I want. Symptom persisted until restarting lightdm. Just yesterday I saw the same sort of symptom happen with a custom launcher I created for a chromium-borwser to open a specific URL (with a few short cuts to other URLs). Click the icon - it works once. Then never again. Right click the icon and I can use the short cuts over and over - no problem. Note - at one point I assumed I might have a problem with my custom .desktop file, so I did a test by removing my custom nautilus-home.desktop. However, even after restarting lightdm, and verifying the home icon was the standard one from /opt/share/applications (all my custom shortcuts were gone) I saw the same symptom re-appear - it runs once and then not again until restarting lightdm. It seems to be intermittent and seems to move between various launchers. Not sure what to do or even what background data to gather. Attempt to improve question after the first answer: I tried the following: 1) remove all custom launchers 2) reboot 3) add custom lauchers back 4) reboot 5) attempt to use .... still have "runs once and never again" symptom with several launchers

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• Computer science curriculum for non-CS major?

  - by Daniel

  Hi all, I would like to have some ideas for building up my foundation CS skills. I have started programming computers 10 years ago and have made a pretty good career out of it. However, I cannot stop thinking that the path that brought me here was very particular, and if something goes wrong (e.g. I get laid off) it would be harder to find a job here in the US on the same salary level, OR in a top company. The reason I say that is that I am a self-learner; my degree is not in Computer Science so although I master C/C++/Java, I do not have the formal CS and mathematical background that many other software developers (esp. here in the US) have. When I look at job interview questions from Apple, Google, Amazon, I have the impression that I'd flunk those technical interviews at some point. Don't get me wrong, I know my algorithms and data structures, but when things dive too deeply into the CS realm I am in trouble. What can I do to close the gap? I was thinking about a MSc in CS, but will I even UNDERSTAND what's going on there if I'm not a CS undergrad? Should I go back to basics and get a BSc in CS instead? I always tend to go into self-study mode when I want to learn new stuff, but I have the impression that I will need more formal education in CS if I want to have a shot at working at those kinds of companies. Thank you!

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• Microsoft ADO.NET 4 Step by Step

  - by Sahil Malik

  Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). Many years ago, I wrote Pro ADO.NET 2.0. I still think that in the plethora of new data access technologies that have come out since, the basic core ADO.NET fundamentals are still every developer must know, and sadly they do not know. So for some crazy reason, I still see every project make the same data access related mistakes over and over again. Anyway, the challenge is that on top of the core ADO.NET fundamentals, there is a vast array of other new technologies you must learn. The important of which is Entity Framework. So, I was asked to, and I was pleased to be the technical reviewer for Microsoft ADO.NET 4, Step by Step, by Tim Patrick. This book introduces the reader not just to the basic ADO.NET principles, but also Entity Framework, LINQ to SQL, and WCF Data Services. So what you may ask is a SharePoint guy like me doing with such interest in ADO.NET land? Well, that’s what the other side says, what is a hardcore data access sorta guy doing in SharePoint land? :). I have authored/co-authored 4 books so far on data access (1,2,3,4), and one on pure SharePoint, and now one on SharePoint 2010 BI. These are very intertwined topics. And LINQ to SQL and LINQ to SharePoint are almost copy paste of each other. WCF Data services are literally the same in both. And many Entity Framework concepts also apply within SharePoint. So there, I did these both for “interest” reasons. Comment on the article ....

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• Best practices for using namespaces in C++.

  - by Dima

  I have read Uncle Bob's Clean Code a few months ago, and it has had a profound impact on the way I write code. Even if it seemed like he was repeating things that every programmer should know, putting them all together and putting them into practice does result in much cleaner code. In particular, I found breaking up large functions into many tiny functions, and breaking up large classes into many tiny classes to be incredibly useful. Now for the question. The book's examples are all in Java, while I have been working in C++ for the past several years. How would the ideas in Clean Code extend to the use of namespaces, which do not exist in Java? (Yes, I know about the Java packages, but it is not really the same.) Does it make sense to apply the idea of creating many tiny entities, each with a clearly define responsibility, to namespaces? Should a small group of related classes always be wrapped in a namespace? Is this the way to manage the complexity of having lots of tiny classes, or would the cost of managing lots of namespaces be prohibitive?

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• A fresh install and clean up?

  - by wdypdx22

  I started with Ubuntu around 3 years ago and have been a dedicated user ever since. During that time I tried out lots of apps, themes, etc. And, I've updated every version as it has come along so now I'm running Lucid. Basically, my system has gotten sort of "messy" and I'm planning a vigorous clean up and a fresh install. My /home is on a separate partition from everything else, so I can preserve that. I want to find and remove unused, unneeded apps (which I pretty much understand how to do). Also, I want to get back to the default desktop theme and build back up from there. And other messes surely exist. So, my question is, What is a good, logical plan to clean up and freshly reinstall my system? (One note is that I have found many links in searches on this issue. There are many links on this topic and many are out of date. So, it's gotten rather confusing to say the least.) Thanks.

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• Reproducible freezes with on an AMD fusion (e350) sony vaio

  - by doycho

  So a week ago I bought it and I've been struggling to make the Ubuntu which I installed stable. There's one thing that makes my life miserable, though. There's this easily reproducible freeze when I start some kind of video. So here is what happens: Everything works fine for some time I start vlc/mplayer/flashplayer/totem with something to watch In few minutes time I lose the sound (nothing in the logs at this point) At that time the video app instantly allocates all the memory and its CPU usage skyrockets. Total freeze. I can move the cursor around for few seconds and sometimes even switch to another app. But ultimately there comes the time I can't do anything - can't kill X with ctrl+alt+backspace (I have it enabled), can't switch to any other console (ctrl+alt+f1-6), can't connect to the machine via ssh. The only way to restart it is the ctrl+alt+SysRq+UABI magic :) What discourages me most is the fact I can't see anything in the logs. The only error I've noticed is Jun 19 17:00:37 serenity kernel: [ 1506.350676] software-center[17581]: segfault at 30 ip 00007fd3631b814c sp 00007fff18a6fa10 error 4 in libgtk-x11-2.0.so.0.2400.4[7fd362f7d000+436000]. I've been searching through the Xorg log, kernel logs, syslog. If you have any idea how I can get more debug info I'll be glad to try them. Things I've tried: Changing drivers - the open source one, the proprietary driver xorg-edgers' ppa - https://launchpad.net/~xorg-edgers/+archive/ppa changing to the last stable kernel (2.6.39) Some notes: It my be irrelevant but the sound is constantly stuttering. This probably is a separate issue though I've found that if I start more video/sound apps the freeze happens faster.

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• F# Simple Twitter Update

  - by mroberts

  A short while ago I posted some code for a C# twitter update.  I decided to move the same functionality / logic to F#.  Here is what I came up with. 1: namespace Server.Actions 2:   3: open System 4: open System.IO 5: open System.Net 6: open System.Text 7:   8: type public TwitterUpdate() = 9: 10: //member variables 11: [<DefaultValue>] val mutable _body : string 12: [<DefaultValue>] val mutable _userName : string 13: [<DefaultValue>] val mutable _password : string 14:   15: //Properties 16: member this.Body with get() = this._body and set(value) = this._body <- value 17: member this.UserName with get() = this._userName and set(value) = this._userName <- value 18: member this.Password with get() = this._password and set(value) = this._password <- value 19:   20: //Methods 21: member this.Execute() = 22: let login = String.Format("{0}:{1}", this._userName, this._password) 23: let creds = Convert.ToBase64String(Encoding.ASCII.GetBytes(login)) 24: let tweet = Encoding.ASCII.GetBytes(String.Format("status={0}", this._body)) 25: let request = WebRequest.Create("http://twitter.com/statuses/update.xml") :?> HttpWebRequest 26: 27: request.Method <- "POST" 28: request.ServicePoint.Expect100Continue <- false 29: request.Headers.Add("Authorization", String.Format("Basic {0}", creds)) 30: request.ContentType <- "application/x-www-form-urlencoded" 31: request.ContentLength <- int64 tweet.Length 32: 33: let reqStream = request.GetRequestStream() 34: reqStream.Write(tweet, 0, tweet.Length) 35: reqStream.Close() 36:   37: let response = request.GetResponse() :?> HttpWebResponse 38:   39: match response.StatusCode with 40: | HttpStatusCode.OK -> true 41: | _ -> false   While the above seems to work, it feels to me like it is not taking advantage of some functional concepts.  Love to get some feedback as to how to make the above more “functional” in nature.  For example, I don’t like the mutable properties.

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• My card reader doesn't show up at all, but previously did in 10.10

  - by Nathan J. Brauer

  I bought a pin-based-USB powered internal media card reader and it worked perfectly when I first installed Ubuntu 10.10 a month ago. I used it a few times since and today I booted up the computer and it's not working. Here's how it used to work: In nautilus->computer, 5 "drives" would display even when no card was inserted. One for each slot (SD, XD, CF/MS, etc). Opening one w/o a card would initiate a "Please insert card." dialog. Inserting a card would automatically open nautilus. Now: No drives display at all whether cards are inserted or not. lsusb lists the following (which seems to indicate that it's not being detected) Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 002: ID 046d:c52e Logitech, Inc. (my keyboard/mouse) Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub (A side note, all of my USB ports are 2.0 + 1 USB port which is 3.0, why does everything say 1.1/2.0?) I tried using ubuntu-bug but for USB devices it expects you to be able to remove and insert them while the computer is running -- obviously something you probably shouldn't be doing when you're dealing with devices plugged straight into the USB pins. Thanks in advance!

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• Studentworker - being a superhero?

  - by Niklas H

  A couple of weeks ago I got a new job as a studentworker for a webagency. The job is 15-20 hours of week. Even though I am new in the company, I feel right at home and I enjoy working with my co-workers. To start of with, I was assigned to work on an internal tool in the company, in order to learn their systems and their development platform. The deadline for this project is this week, and I am right on time. But today (wednesday at noon) I received an email from my boss, asking me to do a new project that has a deadline at friday morning. The new assignment alone will be hard to finish on time, and on top of that I need to finish the other assignment on time. My question is: How do I handle my boss expecting me to be a superhero? EDIT: I will talk to my boss about delaying one of the projects. But another problem is that the new assignment will be hard to do on time (friday morning). I didn't have a say on the deadline - I just got a mail telling me the deadline. I am new in the company and want to stay, but I don't want to start off on the wrong foot with the boss.

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• Multiple instances of Intellitrace.exe process

  - by Vincent Grondin

  Not so long ago I was confronted with a very bizarre problem… I was using visual studio 2010 and whenever I opened up the Test Impact view I would suddenly see my pc perf go down drastically…  Investigating this problem, I found out that hundreds of “Intellitrace.exe” processes had been started on my system and I could not close them as they would re-start as soon as I would close one.  That was very weird.  So I knew it had something to do with the Test Impact but how can this feature and Intellitrace.exe going crazy be related?  After a bit of thinking I remembered that a teammate (Etienne Tremblay, ALM MVP) had told me once that he had seen this issue before just after installing a MOCKING FRAMEWORK that uses the .NET Profiler API…  Apparently there’s a conflict between the test impact features of Visual Studio and some mocking products using the .NET profiler API…  Maybe because VS 2010 also uses this feature for Test Impact purposes, I don’t know… Anyways, here’s the fix…  Go to your VS 2010 and click the “Test” menu.  Then go to the “Edit Test Settings” and choose EACH test setting file applying the following actions (normally 2 files being “Local” and TraceAndTestImpact”: -          Select the Data And Diagnostic option on the left -          Make sure that the ASP.NET Client Proxy for Intellitrace and Test Impact option is NOT SELECTED -          Make sure that the Test Impact option is NOT SELECTED -          Save and close   Edit Test Settings   Problem solved…  For me having to choose between the “Test Impact” features and the “Mocking Framework” was a no brainer, bye bye test impact…  I did not investigate much on this subject but I feel there might be a way to have them both working by enabling one after the other in a precise sequence…  Feel free to leave a comment if you know how to make them both work at the same time!   Hope this helps someone out there !

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• Centrino Wireless-N 1000 takes forever to connect and keeps asking for password

  - by waclock

  A few days ago I started having this problem. When I tried to connect to any WiFi Connection it would stay connecting forever, and after a minute or so it would ask me for the password again. The strange thing is that this happened out of nowhere, I did not install any new drivers or anything like that. After this happened I decided to uninstall ubuntu and install it again ("inside windows") but the problem is still there. Any suggestions would be greatly appreciated. 0: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: no 1: hp-bluetooth: Bluetooth Soft blocked: yes Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: no description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:07:00.0 logical name: eth0 version: 06 serial: 2c:27:d7:aa:e4:7d size: 10Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:50 ioport:4000(size=256) memory:c0404000-c0404fff memory:c0400000-c0403fff *-network description: Wireless interface product: Centrino Wireless-N 1000 vendor: Intel Corporation physical id: 0 bus info: pci@0000:0d:00.0 logical name: wlan0 version: 00 serial: 00:1e:64:09:9c:58 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-23-generic-pae firmware=39.31.5.1 build 35138 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:52 memory:c4500000-c4501fff *-network description: Ethernet interface physical id: 1 bus info: usb@2:1.2 logical name: eth1 serial: ee:85:2f:7d:80:96 capabilities: ethernet physical configuration: broadcast=yes driver=ipheth ip=172.20.10.2 link=yes multicast=yes

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• Did something just get borked with glibc/perl/irssi?

  - by Wayne Werner

  I was using irssi about 30 minutes ago now on Ubuntu server 12.04. Everything was perfectly fine and then all of the sudden something happened (my guess is a power failure). The box was restarted. When I logged back in and ran irssi, I got the following: *** glibc detected *** irssi: double free or corruption (out): 0x0000000002085a40 *** ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x7e626)[0x7ffc01d87626] irssi(config_node_set_str+0x98)[0x491768] irssi[0x491f12] irssi[0x491e61] irssi(config_parse+0x52)[0x492112] irssi[0x48ab81] irssi(settings_init+0xd1)[0x48bf81] irssi(core_init+0x79)[0x47a849] irssi(main+0xd8)[0x4167e8] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7ffc01d2a76d] irssi[0x416b41] ======= Memory map: ======== 00400000-004d0000 r-xp 00000000 08:01 1319015 /usr/bin/irssi 006cf000-006d0000 r--p 000cf000 08:01 1319015 /usr/bin/irssi 006d0000-006dc000 rw-p 000d0000 08:01 1319015 /usr/bin/irssi 006dc000-006dd000 rw-p 00000000 00:00 0 02078000-02099000 rw-p 00000000 00:00 0 [heap] 7ffc0025b000-7ffc00270000 r-xp 00000000 08:01 655404 /lib/x86_64-linux-gnu/libgcc_s.so.1 7ffc00270000-7ffc0046f000 ---p 00015000 08:01 655404 /lib/x86_64-linux-gnu/libgcc_s.so.1 7ffc0046f000-7ffc00470000 r--p 00014000 08:01 655404 /lib/x86_64-linux-gnu/libgcc_s.so.1 7ffc00470000-7ffc00471000 rw-p 00015000 08:01 655404 /lib/x86_64-linux-gnu/libgcc_s.so.1 7ffc00471000-7ffc0073a000 r--p 00000000 08:01 1320172 /usr/lib/locale/locale-archive 7ffc0073a000-7ffc00746000 r-xp 00000000 08:01 655391 /lib/x86_64-linux-gnu/libnss_files-2.15.so 7ffc00746000-7ffc00945000 ---p 0000c000 08:01 655391 /lib/x86_64-linux-gnu/libnss_files-2.15.so 7ffc00945000-7ffc00946000 r--p 0000b000 08:01 655391 /lib/x86_64-linux-gnu/libnss_files-2.15.so 7ffc00946000-7ffc00947000 rw-p 0000c000 08:01 655391 /lib/x86_64-linux-gnu/libnss_files-2.15.so 7ffc00947000-7ffc00951000 r-xp 00000000 08:01 655392 /lib/x86_64-linux-gnu/libnss_nis-2.15.so 7ffc00951000-7ffc00b51000 ---p 0000a000 08:01 655392 /lib/x86_64-linux-gnu/libnss_nis-2.15.so Followed by many more lines. Is there anything I can do to fix this?

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• Why is my wireless significantly slower on Ubuntu 12.04, as compared to windows 7?

  - by user89266

  I'm dual booting 12.04, and Win7. Just a tiny bit of background, I'm starting to get more and more interested in programming and 3d modelling, so I'd like to learn more about ubuntu as a result of those interests. Still a complete newb though! Anyway, When downloading on windows, I get 1.5mb/s easy. Now I swap over to Ubuntu, and it hasn't topped 150 kb/s since I installed it some 6 months ago. I'd downloaded most of my programs on windows, so I never really noticed it, but as I'm committing to ubuntu more, it's starting to hinder me. I'm with Shaw, on their Highspeed 20, which gives me 20 mbps down, and 6mbps up. Speedtest.com shows me varying figures somewhat close to what shaw says they give on both windows and ubuntu, which is to be expected, given that it is shaw afterall... So, I don't know what you guys need to know, and I know even less about how to get it to you. Whatever information you guys need, tell me how to get it, how to get it up here, and i'll get it on here! I thought it might be that I'm using a proprietary driver, when an open sourced one would work better? But I really have no clue. Any help would be very much appreciated. Thanks guys!

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• Disqus ads are disqusting and here is how you turn them off

  - by Gopinath

  After couple of months I spent sometime yesterday reviewing my blog and coziie.com to see if everything is fine. Disqus, the best commenting system and an unusual suspect was looking weird. Commenting sections of my sites are displayed links of third party sites which I was not aware of. The content is annoying to me and I believe my site users are also annoyed. I don’t remember configuring something in disqus to display ads or earn money by promoting other’s content. Why on earth I would like to shows content of someone else’s website right inside comments section and annoy readers? Here is a screen grab of comment section that shows ads.   It turns to be disqus automatically enabled a feature called as “Discovery” to all publishers who upgraded the commenting system to the latest release. I remember upgrading commenting system to the latest release couple of months ago but I don’t remember specifically allowing disqus to spam my comment section!! I’m extremely unhappy with the way disqus automatically enabled spamming comment sections in the name of so called new features that benefits bloggers. How to turn of Discovery or Ads in Disqus I turned them off as soon as I noticed them and it’s very easy to do that. Here are the steps to be followed to turn off ads in comments Login in to disqus Switch to Settings tab Click on Discovery tab Choose the option Just comments Save the settings.  Though it’s easy to turn off the ads, it would have been nice if disqus did not enable them by default. Hey guys at disqus, you lost my trust and from now onwards I’ll double check before opting in to any new features.

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