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• Visual Studio confused when there are multiple system.web sections in your web.config

  - by Jeff Widmer

  I am trying to start debugging in Visual Studio for the website I am currently working on but Visual Studio is telling me that I have to enable debugging in the web.config to continue: But I clearly have debugging enabled: At first I chose the option to Modify the Web.config file to enable debugging but then I started receiving the following exception on my site: HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid. Config section 'system.web/compilation' already defined. Sections must only appear once per config file. See the help topic <location> for exceptions   So what is going on here?  I already have debug=”true”, Visual Studio tells me I do not, and then when I give Visual Studio permission to fix the problem, I get a configuration error. Eventually I tracked it down to having two <system.web> sections. I had defined customErrors higher in the web.config: And then had a second system.web section with compilation debug=”true” further down in the web.config.  This is valid in the web.config and my site was not complaining but I guess Visual Studio does not know how to handle it and sees the first system.web, does not see the debug=”true” and thinks your site is not set up for debugging. To fix this so that Visual Studio was not going to complain, I removed the duplicate system.web declaration and moved the customErrors statement down.

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• C#: String Concatenation vs Format vs StringBuilder

  - by James Michael Hare

  I was looking through my groups’ C# coding standards the other day and there were a couple of legacy items in there that caught my eye.  They had been passed down from committee to committee so many times that no one even thought to second guess and try them for a long time.  It’s yet another example of how micro-optimizations can often get the best of us and cause us to write code that is not as maintainable as it could be for the sake of squeezing an extra ounce of performance out of our software. So the two standards in question were these, in paraphrase: Prefer StringBuilder or string.Format() to string concatenation. Prefer string.Equals() with case-insensitive option to string.ToUpper().Equals(). Now some of you may already know what my results are going to show, as these items have been compared before on many blogs, but I think it’s always worth repeating and trying these yourself.  So let’s dig in. The first test was a pretty standard one.  When concattenating strings, what is the best choice: StringBuilder, string concattenation, or string.Format()? So before we being I read in a number of iterations from the console and a length of each string to generate.  Then I generate that many random strings of the given length and an array to hold the results.  Why am I so keen to keep the results?  Because I want to be able to snapshot the memory and don’t want garbage collection to collect the strings, hence the array to keep hold of them.  I also didn’t want the random strings to be part of the allocation, so I pre-allocate them and the array up front before the snapshot.  So in the code snippets below: num – Number of iterations. strings – Array of randomly generated strings. results – Array to hold the results of the concatenation tests. timer – A System.Diagnostics.Stopwatch() instance to time code execution. start – Beginning memory size. stop – Ending memory size. after – Memory size after final GC. So first, let’s look at the concatenation loop: 1: // build num strings using concattenation. 2: for (int i = 0; i < num; i++) 3: { 4: results[i] = "This is test #" + i + " with a result of " + strings[i]; 5: } Pretty standard, right?  Next for string.Format(): 1: // build strings using string.Format() 2: for (int i = 0; i < num; i++) 3: { 4: results[i] = string.Format("This is test #{0} with a result of {1}", i, strings[i]); 5: }   Finally, StringBuilder: 1: // build strings using StringBuilder 2: for (int i = 0; i < num; i++) 3: { 4: var builder = new StringBuilder(); 5: builder.Append("This is test #"); 6: builder.Append(i); 7: builder.Append(" with a result of "); 8: builder.Append(strings[i]); 9: results[i] = builder.ToString(); 10: } So I take each of these loops, and time them by using a block like this: 1: // get the total amount of memory used, true tells it to run GC first. 2: start = System.GC.GetTotalMemory(true); 3:  4: // restart the timer 5: timer.Reset(); 6: timer.Start(); 7:  8: // *** code to time and measure goes here. *** 9:  10: // get the current amount of memory, stop the timer, then get memory after GC. 11: stop = System.GC.GetTotalMemory(false); 12: timer.Stop(); 13: other = System.GC.GetTotalMemory(true); So let’s look at what happens when I run each of these blocks through the timer and memory check at 500,000 iterations: 1: Operator + - Time: 547, Memory: 56104540/55595960 - 500000 2: string.Format() - Time: 749, Memory: 57295812/55595960 - 500000 3: StringBuilder - Time: 608, Memory: 55312888/55595960 – 500000   Egad!  string.Format brings up the rear and + triumphs, well, at least in terms of speed.  The concat burns more memory than StringBuilder but less than string.Format().  This shows two main things: StringBuilder is not always the panacea many think it is. The difference between any of the three is miniscule! The second point is extremely important!  You will often here people who will grasp at results and say, “look, operator + is 10% faster than StringBuilder so always use StringBuilder.”  Statements like this are a disservice and often misleading.  For example, if I had a good guess at what the size of the string would be, I could have preallocated my StringBuffer like so:   1: for (int i = 0; i < num; i++) 2: { 3: // pre-declare StringBuilder to have 100 char buffer. 4: var builder = new StringBuilder(100); 5: builder.Append("This is test #"); 6: builder.Append(i); 7: builder.Append(" with a result of "); 8: builder.Append(strings[i]); 9: results[i] = builder.ToString(); 10: }   Now let’s look at the times: 1: Operator + - Time: 551, Memory: 56104412/55595960 - 500000 2: string.Format() - Time: 753, Memory: 57296484/55595960 - 500000 3: StringBuilder - Time: 525, Memory: 59779156/55595960 - 500000   Whoa!  All of the sudden StringBuilder is back on top again!  But notice, it takes more memory now.  This makes perfect sense if you examine the IL behind the scenes.  Whenever you do a string concat (+) in your code, it examines the lengths of the arguments and creates a StringBuilder behind the scenes of the appropriate size for you. But even IF we know the approximate size of our StringBuilder, look how much less readable it is!  That’s why I feel you should always take into account both readability and performance.  After all, consider all these timings are over 500,000 iterations.   That’s at best  0.0004 ms difference per call which is neglidgable at best.  The key is to pick the best tool for the job.  What do I mean?  Consider these awesome words of wisdom: Concatenate (+) is best at concatenating.  StringBuilder is best when you need to building. Format is best at formatting. Totally Earth-shattering, right!  But if you consider it carefully, it actually has a lot of beauty in it’s simplicity.  Remember, there is no magic bullet.  If one of these always beat the others we’d only have one and not three choices. The fact is, the concattenation operator (+) has been optimized for speed and looks the cleanest for joining together a known set of strings in the simplest manner possible. StringBuilder, on the other hand, excels when you need to build a string of inderterminant length.  Use it in those times when you are looping till you hit a stop condition and building a result and it won’t steer you wrong. String.Format seems to be the looser from the stats, but consider which of these is more readable.  Yes, ignore the fact that you could do this with ToString() on a DateTime.  1: // build a date via concatenation 2: var date1 = (month < 10 ? string.Empty : "0") + month + '/' 3: + (day < 10 ? string.Empty : "0") + '/' + year; 4:  5: // build a date via string builder 6: var builder = new StringBuilder(10); 7: if (month < 10) builder.Append('0'); 8: builder.Append(month); 9: builder.Append('/'); 10: if (day < 10) builder.Append('0'); 11: builder.Append(day); 12: builder.Append('/'); 13: builder.Append(year); 14: var date2 = builder.ToString(); 15:  16: // build a date via string.Format 17: var date3 = string.Format("{0:00}/{1:00}/{2:0000}", month, day, year); 18:  So the strength in string.Format is that it makes constructing a formatted string easy to read.  Yes, it’s slower, but look at how much more elegant it is to do zero-padding and anything else string.Format does. So my lesson is, don’t look for the silver bullet!  Choose the best tool.  Micro-optimization almost always bites you in the end because you’re sacrificing readability for performance, which is almost exactly the wrong choice 90% of the time. I love the rules of optimization.  They’ve been stated before in many forms, but here’s how I always remember them: For Beginners: Do not optimize. For Experts: Do not optimize yet. It’s so true.  Most of the time on today’s modern hardware, a micro-second optimization at the sake of readability will net you nothing because it won’t be your bottleneck.  Code for readability, choose the best tool for the job which will usually be the most readable and maintainable as well.  Then, and only then, if you need that extra performance boost after profiling your code and exhausting all other options… then you can start to think about optimizing.

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• Hudson.. another Continuous Integration tool

  - by Narendra Tiwari

  In my previous posts I discussed about Cruisecontrol.net and its legacy support to .Net development. Hudson  is yet another continuous integration tool. Hudson is also free like CCNet and built in java. - CCNet has its legacy support to .Net applications where as Hudson can be easily configured on both the environments (.Net and Java). - One of the major differences in CCNet and Hudson is the richer GUI of Hudson provide user interactive screens for project configuration where as in CCNet we have to play with a few xml configuration files. Both the tools are capable of providing basic features of continuous integration e.g.:- - Source Control configuration - Code Compilation/Build - Ad hoc plugin tools to be configured along with compilation Support for adhoc tools seems to be bigger with CCNet e.g. There are almost every source control plugin available with CCNet where as Hudson has support for limited source control servers. Basically there is an interseting point to see is that there are 2 major partsof whole CI system one performed by build tool and rest. Build tool takes care of all adhoc plugin tools  so no matter if CI tool does not have plugin for that tool if thet tools provides command line support that can be configured in build tool and that build tool is then configured with CI tool inturn. For example if I have a build script configured in MSBuild and CCNet can be easily switched to Hudson. Here we need not to change anything in build script we just need to configure MSBuild on Hudson and pass the path of script file and thats it... all is same. Hudson Resources:- - https://hudson.dev.java.net/ - http://wiki.hudson-ci.org/display/HUDSON/Meet+Hudson - http://wiki.hudson-ci.org/display/HUDSON/Plugins - http://callport.blogspot.com/2009/02/hudson-for-net-projects.html Java support on CCNet http://confluence.public.thoughtworks.org/display/CC/Getting+Started+With+CruiseControl?focusedCommentId=19988484#comment-19988484 Please share your thoughts...

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• Project Euler 14: (Iron)Python

  - by Ben Griswold

  In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 14.  As always, any feedback is welcome. # Euler 14 # http://projecteuler.net/index.php?section=problems&id=14 # The following iterative sequence is defined for the set # of positive integers: # n -> n/2 (n is even) # n -> 3n + 1 (n is odd) # Using the rule above and starting with 13, we generate # the following sequence: # 13 40 20 10 5 16 8 4 2 1 # It can be seen that this sequence (starting at 13 and # finishing at 1) contains 10 terms. Although it has not # been proved yet (Collatz Problem), it is thought that all # starting numbers finish at 1. Which starting number, # under one million, produces the longest chain? # NOTE: Once the chain starts the terms are allowed to go # above one million. import time start = time.time() def collatz_length(n): # 0 and 1 return self as length if n <= 1: return n length = 1 while (n != 1): if (n % 2 == 0): n /= 2 else: n = 3*n + 1 length += 1 return length starting_number, longest_chain = 1, 0 for x in xrange(1, 1000001): l = collatz_length(x) if l > longest_chain: starting_number, longest_chain = x, l print starting_number print longest_chain # Slow 31 seconds print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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• Interpolate air drag for my game?

  - by Valentin Krummenacher

  So I have a little game which works with small steps, however those steps vary in time, so for example I sometimes have 10 Steps/second and then I have 20 Steps/second. This changes automatically depending on how many steps the user's computer can take. To avoid inaccurate positioning of the game's player object I use y=v0*dt+g*dt^2/2 to determine my objects y-position, where dt is the time since the last step, v0 is the velocity of my object in the beginning of my step and g is the gravity. To calculate the velocity in the end of a step I use v=v0+g*dt what also gives me correct results, independent of whether I use 2 steps with a dt of for example 20ms or one step with a dt of 40ms. Now I would like to introduce air drag. For simplicity's sake I use a=k*v^2 where a is the air drag's acceleration (I am aware that it would usually result in a force, but since I assume 1kg for my object's mass the force is the same as the resulting acceleration), k is a constant (in this case I'm using 0.001) and v is the speed. Now in an infinitely small time interval a is k multiplied by the velocity in this small time interval powered by 2. The problem is that v in the next time interval would depend on the drag of the last which again depends on the v of the last interval and so on... In other words: If I use a=k*v^2 I get different results for my position/velocity when I use 2 steps of 20ms than when I use one step of 40ms. I used to have this problem for my position too, but adding +g*dt^2/2 to the formula for my position fixed the problem since it takes into account that the position depends on the velocity which changes slightly in every infinitely small time interval. Does something like that exist for air drag too? And no, I dont mean anything like Adding air drag to a golf ball trajectory equation or similar, for that kind of method only gives correct results when all my steps are the same. (I hope you can understand my intermediate english, it's not my main language so I would like to say sorry for all the silly mistakes I might have made in my question)

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• OWB/ODI Users: Last Chance to Submit and Vote On Sessions for OpenWorld 2010

  - by antonio romero

  Now is the last chance for OWB and ODI users to propose new ETL/DW/DI sessions for OpenWorld! Oracle OpenWorld 2010 "Suggest a Session" lets members of the Oracle Mix community submit and vote on papers/talks for OpenWorld. The most popular session proposals will be included in the conference program. One promising OWB-related topic has already been submitted: Case Study: Real-Time Data Warehousing and Fraud Detection with Oracle 11gR2 Dr. Holger Friedrich and consultants from sumIT AG in Switzerland built a real-time data warehouse and accompanying BI system for real-time online fraud detection with very limited resources and a short schedule. His presentation will cover: How sumIT AG efficiently loads complex data feeds in real time in Oracle 11gR2 using, among others, Advanced Queues and XML DB How they lowered costs and sped up development, by leveraging the DBs development features including Oracle Warehouse Builder How they delivered a production-ready solution in a few short months using only three part-time developers Come vote for this proposal, on Oracle Mix: https://mix.oracle.com/oow10/proposals/10566-case-study-real-time-data-warehousing-and-fraud-detection-with-oracle-11gr2  I have already invited members of the OWB/ODI Linkedin group (with over 1400 members) to come vote on topics like this one and propose their own. If enough of us vote on a few topics, we are sure to get some on the agenda!  And if you have your own topics, using the Suggest-a-Session instructions here: http://wiki.oracle.com/page/Oracle+OpenWorld+2010+Suggest-a-Session If you propose a topic, don't forget to come to Linkedin and promote it! I have already sent the members of the Linkedin group an email announcement about this, and I will send another in a week, with links to all topics submitted. Thanks, all!

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• Upgrade Talks at OpenWorld Beijing: December 13-16, 2010

  - by [email protected]

  Mike may be done traveling for a while, but I have more than a bit of travel coming up. Next week I will be delivering four talks at OpenWorld Beijing 2010. I'm looking forward to returning to Beijing. Last time Mike and I saw the usual tourist sites and plenty of interesting food. One place to which I will definitely try to return this time is Da Dong Duck, a wonderful restaurant for (what else?) Peking Duck. Oh yes, my talks, I almost forgot :-). Here are the details: Session Title: The Most Common Upgrade Mistakes (and How to Avoid Them) Session ID: 1716 Session Schedule: 12/15/10 Time: 10:45 - 11:30 Location: Room 506 AB Session Title: Get the Best out of Oracle Data Pump Functionality Session ID: 1376 Session Schedule: 12/16/10 Time: 16:30 - 17:15 Location: Room 311 A Session Title: What Do I Really Need to Know When Upgrading? Session ID: 1412 Session Schedule: 12/16/10 Time: 14:30 - 15:15 Location: Room 308 Session Title: Patching, Upgrades, and Certifications: A Guide for DBAs Session ID: 1723 Session Schedule: 12/16/10 Time: 11:45 - 12:30 Location: Room 506 AB We will also have a demo booth to talk about upgrading to Oracle Database 11g Release 2. So, if you'll be attending OpenWorld Beijing 2010, please stop by one of my talks or the demo booth!

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• Reflector Pro has now been released!

  - by CliveT

  After moving into the .NET division in May , and having a great time working on Reflector, I'm pleased to say that the results of that work are now available. Reflector Pro has now been released! The old Reflector as you know and love it is still available free of charge, and as part of this project we've fixed a number of bugs in the de-compilation that have been around for a long time. The Pro version comes as an add-in for Visual Studio - this offers dynamic de-compilation and generation of pdb files which allow you to step into the de-compiled code. Alex has some good pictures of this functionality on his beta post from around a month ago. Thanks to the other guys who've worked on this for taking me along for the ride - Alex, Andrew, Bart and Jason. Stephen did some great usability work, Chris Alford did some great technical authoring and Laila handled the launch publicity. Like all projects, there's always more I'd like to have done, but what we have looks like a pretty powerful addition to the developer's set of tools to me. Please try it and give us feedback on the forum.

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• Project Euler 12: (Iron)Python

  - by Ben Griswold

  In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 12.  As always, any feedback is welcome. # Euler 12 # http://projecteuler.net/index.php?section=problems&id=12 # The sequence of triangle numbers is generated by adding # the natural numbers. So the 7th triangle number would be # 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28. The first ten terms # would be: # 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, ... # Let us list the factors of the first seven triangle # numbers: # 1: 1 # 3: 1,3 # 6: 1,2,3,6 # 10: 1,2,5,10 # 15: 1,3,5,15 # 21: 1,3,7,21 # 28: 1,2,4,7,14,28 # We can see that 28 is the first triangle number to have # over five divisors. What is the value of the first # triangle number to have over five hundred divisors? import time start = time.time() from math import sqrt def divisor_count(x): count = 2 # itself and 1 for i in xrange(2, int(sqrt(x)) + 1): if ((x % i) == 0): if (i != sqrt(x)): count += 2 else: count += 1 return count def triangle_generator(): i = 1 while True: yield int(0.5 * i * (i + 1)) i += 1 triangles = triangle_generator() answer = 0 while True: num = triangles.next() if (divisor_count(num) >= 501): answer = num break; print answer print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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• How to have an improved relationship with recruiters?

  - by crosenblum

  I personally, always have problems with recruiter's and their constant spam.. I usually get tons of emails for jobs, not related to what I do. Or they have no idea what I do. Or they say they have a job in my field, but make me go thru hours of paperwork, only to find out they had no real job lead. Or my resume contained a keyword, that they searched for, but that keyword is like 1-10% of what I do, not my main job skill set. My point being is that I want to have a more polite, more accurate, less waste of each other's time. So I want to come up with a form letter, I can create in gmail to automatically send to all recruiter's, to help inform, educate and train them to deal better with me. That way, they know exactly what to send to me, so as to not waste my time. We don't play email/phone tag, just to find out they have no idea what I do, or how to find a job lead that matches that. I want this to be an improvement in my relationship and experience with recruiters, because honestly most of them waste my time. They call me at work, not considering I can't take phone call's at work, and they already had my email address. Mostly they annoy me, but I am tired of having to be rude to get my point across. I want them to immediately make sure they know what I can and have done, (Have you read my resume?) and have actual leads ready to be hired/interviewed soon or now. Any suggestions to how to improve the communication, to avoid wasting each other's time. I certainly hate having to come across as rude or improper, but when they just waste so much of my time, I don't know what else to do. So thank you for your time. Just to be clear, I want your help to write a form letter, that I can send to every recruiter that email's me, how to best work with me, and other people in IT/Web careers.

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• C#.NET (AForge) against Java (JavaCV, JMF) for video processing

  - by Leron

  I'm starting to get really confused looking deeper and deeper at video processing world and searching for optimal choices. This is the reason to post this and some other questions to try and navigate myself in the best possible way. I really like Java, working with Java, coding with Java, at the same time C# is not that different from Java and Visual Studio is maybe the best IDE I've been working with. So even though I really want to do my projects in Java so I can get better and better Java programmer at the same time I'm really attract to video processing and even though I'm still at the beginning of this journey I want to take the right path. So I'm really in doubt could Java be used in a production environment for serious video processing software. As the title says I already have been looking at maybe the two most used technologies for video processing in Java - JMF and JavaCV and I'm starting to think that even they are used and they provide some functionality, when it comes to real work and real project that's not the first thing that comes to once mind, I mean to someone that have a professional opinion about this. On the other hand I haven't got the time to investigate .NET (c# specificly) options but even AForge looks a lot more serious library then those provided for Java. So in general -either ways I'm gonna spend a lot of time learning some technology and trying to do something that make sense with it, but my plan is at the end the thing that I'll eventually come up to be my headline project. To represent my skills and eventually help me find a job in the field. So I really don't want to spend time learning something that will give me the programming result I want but at the same time is not something that is needed in the real world development. So what is your opinion, which language, technology is better for this specific issue. Which one worths more in terms that I specified above?

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• Project Euler 19: (Iron)Python

  - by Ben Griswold

  In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 19.  As always, any feedback is welcome. # Euler 19 # http://projecteuler.net/index.php?section=problems&id=19 # You are given the following information, but you may # prefer to do some research for yourself. # # - 1 Jan 1900 was a Monday. # - Thirty days has September, # April, June and November. # All the rest have thirty-one, # Saving February alone, # Which has twenty-eight, rain or shine. # And on leap years, twenty-nine. # - A leap year occurs on any year evenly divisible by 4, # but not on a century unless it is divisible by 400. # # How many Sundays fell on the first of the month during # the twentieth century (1 Jan 1901 to 31 Dec 2000)? import time start = time.time() import datetime sundays = 0 for y in range(1901,2001): for m in range(1,13): # monday == 0, sunday == 6 if datetime.datetime(y,m,1).weekday() == 6: sundays += 1 print sundays print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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• D key not working on Ubuntu

  - by Jonathan

  For some inexplicable reason the capital d key on my Ubuntu system is no longer producing output. Hitting caps lock and then d produces a D. I've tried multiple keyboards and the issue is the same. There's nothing bound to Shift+d under System Preferences Keyboard Shortcuts. xev produces the following: shift + a KeyPress event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31268952, (130,-16), root:(1000,525), state 0x10, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31269376, (130,-16), root:(1000,525), state 0x11, keycode 38 (keysym 0x41, A), same_screen YES, XLookupString gives 1 bytes: (41) "A" XmbLookupString gives 1 bytes: (41) "A" XFilterEvent returns: False KeyRelease event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31269584, (130,-16), root:(1000,525), state 0x11, keycode 38 (keysym 0x41, A), same_screen YES, XLookupString gives 1 bytes: (41) "A" XFilterEvent returns: False KeyRelease event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31269608, (130,-16), root:(1000,525), state 0x11, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False shift + d KeyPress event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31102792, (115,-13), root:(985,528), state 0x10, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False FocusOut event, serial 36, synthetic NO, window 0x4c00001, mode NotifyGrab, detail NotifyAncestor FocusIn event, serial 36, synthetic NO, window 0x4c00001, mode NotifyUngrab, detail NotifyAncestor KeymapNotify event, serial 36, synthetic NO, window 0x0, keys: 2 0 0 0 0 0 0 64 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 KeyRelease event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31103104, (115,-13), root:(985,528), state 0x11, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False

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• Versioning and Continuous Integration with project settings files

  - by Michael Stephenson

  I came across something which was a bit of a pain in the bottom the other week. Our scenario was that we had implemented a helper style assembly which had some custom configuration implemented through the project settings. I'm sure most of you are familiar with this where you end up with a settings file which is viewable through the C# project file and you can configure some basic settings. The settings are embedded in the assembly during compilation to be part of a DefaultValue attribute. You have the ability to override the settings by adding information to your app.config and if the app.config doesn’t override the settings then the embedded default is used. All normal C# stuff so far… Where our pain started was when we implement Continuous Integration and we wanted to version all of this from our build. What I was finding was that the assembly was versioned fine but the embedded default value was maintaining the non CI build version number. I ended up getting this to work by using a build task to change the version numbers in the following files: App.config Settings.settings Settings.designer.cs I think I probably could have got away with just the settings.designer.cs, but wanted to keep them all consistent incase we had to look at the code on the build server for some reason. I think the reason this was painful was because the settings.designer.cs is only updated through Visual Studio and it writes out the code to this file including the DefaultValue attribute when the project is saved rather than as part of the compilation process. The compile just compiles the already existing C# file. As I said we got it working, and it was a bit of a pain. If anyone has a better solution for this I'd love to hear it

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• difference between Casini [IIS express] and VS Development server or Expression web

  - by anirudha

  MVC3 project can be run within Expression web and Visual studio as opened like a website not a project. they work same even if you open blogengine.net project in VS they take a time when you have more theme but expression web debug them in a second. well because theme design not matter for code. Expression web is a good because they save time for compile the code. even changes we make a little in design nothing in backend code.   i found a little difference between Casini and VS development server that if image putted in wrong way like <img src=”//img.png”/> instead of <img src=”/img.png”/> the error we make // instead of / that’s not worked in Expression web or Visual studio debugging but in Cassini it’s work fine.   Well i found that debug Blogengine.net in Expression web is a great thing because in VS they take a time like a minute to debug when you trying to debug first time. Expression Web save a time when we design themes within them and that’s much good option because web is also maked for design.   Well if you want to debug application faster then use casini but Expression web debugging is a good option when they take a long time to debug in Visual studio and EW debug them in a seconds.

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• How do you keep from running into the same problems over and over?

  - by Stephen Furlani

  I keep running into the same problems. The problem is irrelevant, but the fact that I keep running into is completely frustrating. The problem only happens once every, 3-6 months or so as I stub out a new iteration of the project. I keep a journal every time, but I spend at least a day or two each iteration trying to get the issue resolved. How do you guys keep from making the same mistakes over and over? I've tried a journal but it apparently doesn't work for me. [Edit] A few more details about the issue: Each time I make a new project to hold the files, I import a particular library. The library is a C++ library which imports glew.h and glx.h GLX redefines BOOL and that's not kosher since BOOL is a keyword for ObjC. I had a fix the last time I went through this. I #ifndef the header in the library to exclude GLEW and GLX and everything worked hunky-dory. This time, however, I do the same thing, use the same #ifndef block but now it throws a bunch of errors. I go back to the old project, and it works. New project no-worky. It seems like it does this every time, and my solution to it is new each time for some reason. I know #defines and #includes are one of the trickiest areas of C++ (and cross-language with Objective-C), but I had this working and now it's not.

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• Can't get Wireless to work! (Fujitsu siemens ESPRIMO Mobile u9200) Ubuntu 12.4

  - by Martin Oscarsson

  I can't get wireless to work on my computer. I have recently installed 12.04. Computer name: (Fujitsu siemens ESPRIMO Mobile u9200) Hardware button starts bluetooth - so can't start that way. Have searched the Internet for help but can't find any on my specific problem! State: connected (global) - Device: wlan0 ---------------------------------------------------------------- Type: 802.11 WiFi Driver: ath5k State: disconnected Default: no *-network beskrivning: Trådlöst gränssnitt produkt: AR242x / AR542x Wireless Network Adapter (PCI-Express) tillverkare: Atheros Communications Inc. *-network beskrivning: Ethernet interface produkt: 88E8055 PCI-E Gigabit Ethernet Controller tillverkare: Marvell Technology Group Ltd. HERE IS ALL THE NETWORK INFO: ellika@ellikas:~$ ifconfig eth0 Link encap:Ethernet HWaddr 00:1e:33:00:96:9a inet addr:192.168.1.26 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21e:33ff:fe00:969a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:13778 errors:0 dropped:0 overruns:0 frame:0 TX packets:9510 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:14022669 (14.0 MB) TX bytes:1001621 (1.0 MB) Interrupt:17 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1542 errors:0 dropped:0 overruns:0 frame:0 TX packets:1542 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:125040 (125.0 KB) TX bytes:125040 (125.0 KB) ellika@ellikas:~$ sudo ifconfig [sudo] password for ellika: eth0 Link encap:Ethernet HWaddr 00:1e:33:00:96:9a inet addr:192.168.1.26 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21e:33ff:fe00:969a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:13801 errors:0 dropped:0 overruns:0 frame:0 TX packets:9528 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:14024965 (14.0 MB) TX bytes:1002836 (1.0 MB) Interrupt:17 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1542 errors:0 dropped:0 overruns:0 frame:0 TX packets:1542 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:125040 (125.0 KB) TX bytes:125040 (125.0 KB) ellika@ellikas:~$ sudo ifconfig wlan0 up SIOCSIFFLAGS: Operationen inte möjlig p.g.a. RF-kill ellika@ellikas:~$ phy0 Wireless LAN phy0: command not found ellika@ellikas:~$ rfkill Usage: rfkill [options] command Options: --version show version (0.4-1ubuntu2 (Ubuntu)) Commands: help event list [IDENTIFIER] block IDENTIFIER unblock IDENTIFIER where IDENTIFIER is the index no. of an rfkill switch or one of: <idx> all wifi wlan bluetooth uwb ultrawideband wimax wwan gps fm ellika@ellikas:~$ sudo rf-kill unblock all sudo: rf-kill: kommandot hittades inte ellika@ellikas:~$ sudo rfkill unblock all ellika@ellikas:~$ sedan sudo ifconfig wlan0 sedan: command not found ellika@ellikas:~$ sudo ifconfig wlan0 wlan0 Link encap:Ethernet HWaddr 00:22:5f:3f:63:76 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) ellika@ellikas:~$ ^C ellika@ellikas:~$ ^C ellika@ellikas:~$ sudo rfkill unblock all ellika@ellikas:~$ sudo ifconfig wlan0 up SIOCSIFFLAGS: Operationen inte möjlig p.g.a. RF-kill ellika@ellikas:~$ sudo rfkill unblock all ellika@ellikas:~$ sudo rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes ellika@ellikas:~$ sudo rfkill unblock all ellika@ellikas:~$ echo -e "sudo lshw --class network:\n\n$(sudo lshw -c network)\n\nlspci -nnn | grep Ethernet:\n\n$(lspci -nnn | grep Ethernet)\n\nlsusb:\n\n$(lsusb)\n\niwlist wlan0 scanning:\n\n$(iwlist wlan0 scanning)\n\nrfkill list:\n\n$(rfkill list)\n\nping -c 5 google.com:\n\n$(ping -c 5 google.com)\n\nhost google.com 8.8.8.8:\n\n$(host google.com 8.8.8.8)\n\nlsb_release -a:\n\n$(lsb_release -a)\n\nuname -a:\n\n$(uname -a)" ^[[C^[[C^[[C^[[C^[[C^[[B wlan0 Failed to read scan data : Network is down No LSB modules are available. sudo lshw --class network: *-network beskrivning: Ethernet interface produkt: 88E8055 PCI-E Gigabit Ethernet Controller tillverkare: Marvell Technology Group Ltd. physical id: 0 bus info: pci@0000:04:00.0 logiskt namn: eth0 version: 14 serienummer: 00:1e:33:00:96:9a storlek: 100Mbit/s kapacitet: 1Gbit/s bredd: 64 bits klocka: 33MHz förmågor: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation konfiguration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 duplex=full firmware=N/A ip=192.168.1.26 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resurser: irq:44 memory:f8000000-f8003fff ioport:3000(storlek=256) memory:f2000000-f201ffff *-network INAKTIVERAD beskrivning: Trådlöst gränssnitt produkt: AR242x / AR542x Wireless Network Adapter (PCI-Express) tillverkare: Atheros Communications Inc. physical id: 0 bus info: pci@0000:06:00.0 logiskt namn: wlan0 version: 04 serienummer: 00:22:5f:3f:63:76 bredd: 64 bits klocka: 33MHz förmågor: pm msi pciexpress msix bus_master cap_list ethernet physical wireless konfiguration: broadcast=yes driver=ath5k driverversion=3.2.0-30-generic-pae firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bg resurser: irq:18 memory:fa000000-fa00ffff lspci -nnn | grep Ethernet: 04:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8055 PCI-E Gigabit Ethernet Controller [11ab:4363] (rev 14) 06:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR242x / AR542x Wireless Network Adapter (PCI-Express) [168c:001c] (rev 04) lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 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 005 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 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 05e3:0715 Genesys Logic, Inc. USB 2.0 microSD Reader Bus 001 Device 003: ID 05c8:0103 Cheng Uei Precision Industry Co., Ltd (Foxlink) FO13FF-65 PC-CAM iwlist wlan0 scanning: rfkill list: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes ping -c 5 google.com: PING google.com (173.194.32.34) 56(84) bytes of data. 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=1 ttl=55 time=10.6 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=2 ttl=55 time=10.5 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=3 ttl=55 time=10.4 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=4 ttl=55 time=10.4 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=5 ttl=55 time=10.4 ms --- google.com ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 4004ms rtt min/avg/max/mdev = 10.451/10.517/10.631/0.062 ms host google.com 8.8.8.8: Using domain server: Name: 8.8.8.8 Address: 8.8.8.8#53 Aliases: google.com has address 173.194.32.36 google.com has address 173.194.32.38 google.com has address 173.194.32.41 google.com has address 173.194.32.37 google.com has address 173.194.32.35 google.com has address 173.194.32.39 google.com has address 173.194.32.33 google.com has address 173.194.32.34 google.com has address 173.194.32.46 google.com has address 173.194.32.32 google.com has address 173.194.32.40 google.com has IPv6 address 2a00:1450:400f:801::100e google.com mail is handled by 40 alt3.aspmx.l.google.com. google.com mail is handled by 20 alt1.aspmx.l.google.com. google.com mail is handled by 30 alt2.aspmx.l.google.com. google.com mail is handled by 50 alt4.aspmx.l.google.com. google.com mail is handled by 10 aspmx.l.google.com. lsb_release -a: Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise uname -a: Linux ellikas 3.2.0-30-generic-pae #48-Ubuntu SMP Fri Aug 24 17:14:09 UTC 2012 i686 i686 i386 GNU/Linux ellika@ellikas:~$ ellika@ellikas:~$ clear ellika@ellikas:~$ echo -e "sudo lshw --class network:\n\n$(sudo lshw -c network)\n\nlspci -nnn | grep Ethernet:\n\n$(lspci -nnn | grep Ethernet)\n\nlsusb:\n\n$(lsusb)\n\niwlist wlan0 scanning:\n\n$(iwlist wlan0 scanning)\n\nrfkill list:\n\n$(rfkill list)\n\nping -c 5 google.com:\n\n$(ping -c 5 google.com)\n\nhost google.com 8.8.8.8:\n\n$(host google.com 8.8.8.8)\n\nlsb_release -a:\n\n$(lsb_release -a)\n\nuname -a:\n\n$(uname -a)" wlan0 Failed to read scan data : Network is down No LSB modules are available. sudo lshw --class network: *-network beskrivning: Ethernet interface produkt: 88E8055 PCI-E Gigabit Ethernet Controller tillverkare: Marvell Technology Group Ltd. physical id: 0 bus info: pci@0000:04:00.0 logiskt namn: eth0 version: 14 serienummer: 00:1e:33:00:96:9a storlek: 100Mbit/s kapacitet: 1Gbit/s bredd: 64 bits klocka: 33MHz förmågor: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation konfiguration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 duplex=full firmware=N/A ip=192.168.1.26 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resurser: irq:44 memory:f8000000-f8003fff ioport:3000(storlek=256) memory:f2000000-f201ffff *-network INAKTIVERAD beskrivning: Trådlöst gränssnitt produkt: AR242x / AR542x Wireless Network Adapter (PCI-Express) tillverkare: Atheros Communications Inc. physical id: 0 bus info: pci@0000:06:00.0 logiskt namn: wlan0 version: 04 serienummer: 00:22:5f:3f:63:76 bredd: 64 bits klocka: 33MHz förmågor: pm msi pciexpress msix bus_master cap_list ethernet physical wireless konfiguration: broadcast=yes driver=ath5k driverversion=3.2.0-30-generic-pae firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bg resurser: irq:18 memory:fa000000-fa00ffff lspci -nnn | grep Ethernet: 04:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8055 PCI-E Gigabit Ethernet Controller [11ab:4363] (rev 14) 06:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR242x / AR542x Wireless Network Adapter (PCI-Express) [168c:001c] (rev 04) lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 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 005 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 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 05e3:0715 Genesys Logic, Inc. USB 2.0 microSD Reader Bus 001 Device 003: ID 05c8:0103 Cheng Uei Precision Industry Co., Ltd (Foxlink) FO13FF-65 PC-CAM iwlist wlan0 scanning: rfkill list: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes ping -c 5 google.com: PING google.com (173.194.32.34) 56(84) bytes of data. 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=1 ttl=55 time=10.6 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=2 ttl=55 time=10.5 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=3 ttl=55 time=10.4 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=4 ttl=55 time=10.4 ms 64 bytes from arn06s02-in-f2.1e100.net (173.194.32.34): icmp_req=5 ttl=55 time=10.5 ms --- google.com ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 4004ms rtt min/avg/max/mdev = 10.476/10.522/10.602/0.045 ms host google.com 8.8.8.8: Using domain server: Name: 8.8.8.8 Address: 8.8.8.8#53 Aliases: google.com has address 173.194.32.36 google.com has address 173.194.32.38 google.com has address 173.194.32.41 google.com has address 173.194.32.37 google.com has address 173.194.32.35 google.com has address 173.194.32.39 google.com has address 173.194.32.33 google.com has address 173.194.32.34 google.com has address 173.194.32.46 google.com has address 173.194.32.32 google.com has address 173.194.32.40 google.com has IPv6 address 2a00:1450:400f:801::100e google.com mail is handled by 40 alt3.aspmx.l.google.com. google.com mail is handled by 20 alt1.aspmx.l.google.com. google.com mail is handled by 30 alt2.aspmx.l.google.com. google.com mail is handled by 50 alt4.aspmx.l.google.com. google.com mail is handled by 10 aspmx.l.google.com. lsb_release -a: Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise uname -a: Linux ellikas 3.2.0-30-generic-pae #48-Ubuntu SMP Fri Aug 24 17:14:09 UTC 2012 i686 i686 i386 GNU/Linux

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• LUKS no longer accepts my my passphrase

  - by Two Spirit

  I created a 4 drive RAID5 setup using mdadm and upgrading from 2TB drives to the new Hitachi 7200RPM 4TB drives. I can initially open my luks partition, but later can no longer access it. I can no longer access my LUKS partition even tho I have the right passphrases. It was working and then at an unknown point in time loose access to LUKS. I've used the same procedures for upgrading from 500G to 1TB to 1.5TB to 2TB. After the first time this happened a week ago, I thought maybe there was some corruption so I added a 2nd Key as a backup. After the second time the LUKS became unaccessible, none of the keys worked. I put LUKS on it using cryptsetup -c aes -s 256 -y luksFormat /dev/md0 # cryptsetup luksOpen /dev/md0 md0_crypt Enter LUKS passphrase: Enter LUKS passphrase: Enter LUKS passphrase: Command failed: No key available with this passphrase. The first time this happened while I was upgrading to 4TB drives, I thought it was a fluke, and ultimately had to recover from backups. I went an used luksAddKey to add a 2nd key as a backup. It happened again and I tried both passphrases, and neither worked. The only thing I'm doing differently this time around is that I've upgraded to 4TB drives which use GPT instead of fdisk. The last time I had to even reboot the box was over 2 years ago. I'm using ubuntu-8.04-server with kernel 2.6.24-29 and upgraded to -2.6.24-31, but that didn't fix the problem.

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• Showing Egde Shaped Event Duration in StreamInsight using Debugger

  Whilst writing some courseware I wanted to be able to see the start and end times of Edge shaped events from within the debugger.  A quick recap on Edge events At the start of the event you do not know the end time and most probably cannot work it out or you should be using one of the other shapes. You enqueue an event (Start Edge) with the start time and payload of the event.  The end time of the event is set to infinity When you see the end edge come through, you enqueue another event (End Edge) with the previous start time and payload and restate the event’s end time.  This is the Retract Event All seems simple enough.  The problem is the debugger is a little shy about showing you what you need but you can get it to show you everything by also reading this article Here’s what I mean. Here is what the Event Debugger looks like by default when viewing 2 complete edge events.  Notice how all the end times are set to infinity   The above does not tell you for how long an event was valid.  I then add the “NewEndTime” column to the debugger output and there I can now see the duration of events.  You will see the Retract events (End Edge) have the same start time and payload as their respective start events (Start Edge)   You can follow the exact same logic when looking at Interval shape events.  They look a little different on the output adapter but using this article you can easily see what is happening.

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• An experiment: unlimited free trial

  - by Alex.Davies

  The .NET Demon team have just implemented an experiment that is quite a break from Red Gate's normal business model. Instead of the tool expiring after the trial period, it now continues to work, but with a new message that appears after the tool has saved you a certain amount of time. The rationale is that a user that stops using .NET Demon because the trial expired isn't doing anyone any good. We'd much rather people continue using it forever, as long as everyone that finds it useful and can afford it still pays for it. Hopefully the message appearing is annoying enough to achieve that, but not for people to uninstall it. It's true that many companies have tried it before with mixed results, but we have a secret weapon. The perfect nag message? The neat thing for .NET Demon is that we can easily measure exactly how much time .NET Demon has saved you, in terms of unnecessary project builds that Visual Studio would have done. When you press F5, the message shows you the time saved, and then makes you wait a shorter time before starting your application. Confronted with the truth about how amazing .NET Demon is, who can do anything but buy it? The real secret though, is that while you wait, .NET Demon gives you entertainment, in the form of a picture of a cute kitten. I've only had time to embed one kitten so far, but the eventual aim is for a random different kitten to appear each time. The psychological health benefits of a dose of kittens in the daily life of the developer are obvious. My only concern is that people will complain after paying for .NET Demon that the kittens are gone.

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• Tell me why I should bother using Linux if it's all about problems getting the OS to install or work properly? [closed]

  - by Vilhjalmur Magnussin

  Why should I spend day's trying to get Ubuntu to either install and/or work properly? I'm using an Acer Timeline X laptop and if I install 10.04 the wireless doesn't work, and if I try installing 11.04 it either won't install, or if it installs it's full of bugs causing my computer to freeze all the time. So please, I'm all open ears. Someone give me one or two good reasons to continue wasting time (in hope it eventually works) before I decide to focus my time on other things like productivity (using Windows like I've been doing successfully the last 10 years). This is the second time I give Ubuntu a try, the first time was in 2010 using Ubuntu Studio and Ubuntu Desktop, and it ended with me shifting back to Windows since I had spent more time getting everything to work than actually working while trying Ubuntu. I really don't understand why it needs to be like this. Why go on trying when all I see is forums full of discussions about problems which people are having difficulties fixing. Or maybe there is just one special type of computer which works well with Linux? Would very much like to know which computer that is. SO please, if it's not to much trouble I really want to here from someone who has something good to say about going through all this trouble just to get a working environment up and running since I already have a working environment up and running called Windows. Thanks, Villi.

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• Developing wheel reinventing tendencies into a skill as opposed to reluctantly learning wheel-finding skills? [duplicate]

  - by Korey Hinton

  This question already has an answer here: Is reinventing the wheel really all that bad? 20 answers I am more of a high-level wheel reinventor. I definitely prefer to make use of existing API features built into a language and popular third-party frameworks that I know can solve the problem, however when I have a particular problem that I feel capable of solving within a reasonable time I am very reluctant to find someone else's solution. Here are a few reasons why I reinvent: It takes time to learn a new API API restrictions might exist that I don't know about Avoiding re-work of unfamiliar code I am conflicted between doing what I know and shifting to a new technique I don't feel comfortable with. On one hand I feel like following my instincts and getting really good at solving problems, especially ones that I would never challenge myself with if all I did was try to find answers. And on the other hand I feel like I might be missing out on important skills like saving time by finding the right framework and expanding my knowledge by learning how to use a new framework. I guess my question comes down to this: My current attitude is to stick to the built-in API and APIs I know well* and to not spend my time searching github for a solution to a problem I know I can solve myself within a reasonable amount of time. Is that a reasonable balance for a successful programmer? *Obviously I will still look around for new frameworks that save time and solve/simplify difficult problems.

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• You wouldn&rsquo;t drink 9 year old milk would you?

  - by Jim Duffy

  This is an absolutely brilliant campaign to urge users that its time to move on from IE 6. I like how it puts it terms that everyone can understand and has probably experienced at one time or another. How many times have you opened the milk, took a sniff, and experienced that visceral reaction that accompanies catching a whiff of milk that has turned to the dark side of the force? I call it Darth Vader milk. :-) Of course I’m assuming that you haven’t used IE 6 for a long time now. It is our responsibility as information technology workers to communicate to our friends and family how lame using IE 6 is. Shame them into upgrading if necessary. I don’t care how you get through to them but get through. Tell them that only losers use IE 6. Tell them you’ll cut them out of the your will. Tell them they’re banned from your annual BBQ blowout. Tell them that [insert their favorite celebrity’s name here] thinks people using IE6 are losers.  :-) Seriously, IE6 sucks and blows at the same time and has got to go for a number of reasons including the security leaks that come with using it. Confidentially, I urge them to upgrade for purely selfish reasons. Because I am the first level of computer support for waaaaaay to many of my family members I always advocate they use a current browser (IE 8 or Firefox) and anti-virus software (AVG). Call me selfish but I’d rather not waste my time dealing with a virus or malware that could potentially slip through with IE6. Yes, I’m selfish with my time that way. :-) Have a day. :-|

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• Ubuntu 12.04 Freezes at Bootup

  - by Ryan Yu

  I have an Acer Aspire One Model AO722, that has a dual-boot configuration with Windows 7 Home Premium and Ubuntu 12.04. Processor: AMD C-50, 1.00GHz 2.00GB ram, 64-bit, AMD Radeon HD 6250 Graphics. I installed Ubuntu two days ago, and since then, loading it has been sporadic. Windows 7 still loads just fine, but Ubuntu will sometimes freeze. First time I booted Ubuntu up, it ran no problem. Worked with it for half an hour, then shut down the computer. The second time I booted it up, it froze after ten minutes when I was trying to set up Thunderbird. Third time, same thing. Fourth time, it froze about 5 minutes after bootup when I was trying to connect to my wifi. Fifth time, it ran no problems for about 5~ hours. Then, three consecutive times I've restarted (what is it, the 6th, 7th, and 8th times?) it has gotten to the login screen, I've entered my password, all the text on the page disappears as if its going to load my desktop, and it freezes. A minute ago when I booted Ubuntu up for the 9th time, it loaded the desktop fine. Who knows if it'll crash soon; probably, though. Any ideas?

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• Am I an idealist?

  - by ereOn

  This is not only a question, this is also a call for help. Since I started my career as a programmer, I always tried to learn from my mistakes. I worked hard to learn best-practices and while I don't consider myself a C++ expert, I still believe I'm not a beginner either. I was recently hired into a company for C++ development. There I was told that my way to work was "against the rules" and that I would have to change my mind. Here are the topics I disagree with my hierarchy (their words): "You should not use separate header files for your different classes. One big header file is both easier to read and faster to compile." "Trying to use different headers is counter-productive : use the same super-set of headers everywhere, and enforce the use #pragma hdrstop to hasten compilation" "You may not use Boost or any other library that uses nested directories to organize its files. Our build-machine doesn't work with nested directories. Moreover, you don't need Boost to create great software." One might think I'm somehow exaggerated things, but the sad truth is that I didn't. That's their actual words. I believe that having separate files enhance maintainability and code-correctness and can fasten compilation time by the use of the proper includes. Have you been in a similar situation? What should I do? I feel like it's actually impossible for me to work that way and day after day, my frustration grows.

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