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• Code editor skins?

  - by Khalspi

  This is a kind of unorthodox question. Frankly, I won't lie to you. I am new to programming and am planning to improve myself. I enjoy coding but I need something to keep me going during the down times, so my question is: Is there such a thing as a code editor skin? A compiler skin? For example, you have the Command Prompt, it has a black background with white writing, it seems geeky, exactly what I want. I want a compiler that looks like command prompt...black with white writing (or green) or still has color coding (some compilers change color of text based on command). Yes, this is mainly for boasting, but I don't want to show someone something that basically looks like a text editor, I just want something that looks a little cooler. P.S (This question may seem a little unnecessary, it is because it is my first question, I'd like to warm up to this community before I start asking some real questions about code.)

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• Throwing a new exception while throwing an old exception

  - by FredOverflow

  If a destructor throws in C++ during stack unwinding caused by an exception, the program terminates. (That's why destructors should never throw in C++.) If a finally block is entered in Java because of an exception in the corresponding try block and that finally block throws another exception, the first exception is silently swallowed. This question crossed my mind: Could a programming language handle multiple exceptions being thrown at the same time? Would that be useful? Have you ever missed that ability? Is there a language that already supports this? Is there any experience with such an approach? Any thoughts?

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• WPF custom Button using Geometry from resource

  - by theburningmonk

  Is there a way to use a collection of PathGeometry like these: Path 1 F1 M 170.255,178.837L 170.255,221.158C 170.255,228.917 164.174,230.777 156.745,225.286L 136.003,209.973C 128.572,204.488 128.572,195.512 136.003,190.023L 156.745,174.706C 164.174,169.217 170.255,171.079 170.255,178.837 Z Path 2 F1 M 152.29,174.464L 134.314,187.734C 129.978,190.937 127.589,195.29 127.589,199.994C 127.589,204.7 129.978,209.057 134.314,212.26L 152.29,225.531C 150.333,229.378 145.412,229.52 139.678,225.286L 118.935,209.973C 111.506,204.489 111.506,195.512 118.935,190.022L 139.678,174.708C 145.412,170.475 150.333,170.617 152.29,174.464 Z and use them to make a custom button in the same way you can make a circular button shown in this example? http://www.wpftutorial.net/Templates.html The example involves overriding the control template and it seems a lot of work if I want to have many custom-shaped buttons. And what if I want to load the geometry points from the resource?

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• MIPS processors : Are they still in use? Which other architecture should I learn?

  - by claws

  I've been programming for x86 & x86-64 in assembly language for few months. Now, I want to move on to some different kind of processors. MIPS, SPARC, PowerPC, Itanium, ARM of these I found ARM is being widely use. But the books I see that tutorials & books teach about MIPS more than all these other architectures. Why is MIPS so popular? Are MIPS processors still in use? Which architecture should I go for?

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• What's wrong with the analogy between software and building construction?

  - by kuosan

  Many people like to think of building software as constructing a building so we have terms like building blocks and architecture. However, lately I've been to a couple of talks and most people say this analogy is wrong especially around the idea of having a non-coding software architect in a project. In my experience, good software architects are those who also write code so they won't design things that only looks good on paper. I've worked with several Architecture Astronauts, who have either limited or outdated experience in programming. These architecture astronauts quite often missed out critical details in their design and cause more harm than good in a project. This makes me wonder what are the differences between constructing a software and a building? How come in the building industry they can have architects who probably never build a house in their life and purely handles design work but not in the software development field?

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• CSS rules help - layout and menu

  - by NachoF

  Im trying to use this template for a webapp Im making (I really suck at css so I have to use templates). I have two questions with it... I deleted all of the content of the "#content" div and added my own content... the problem is that since its not as long as the original content the header comes up and is now on top of the sidebars....how can I make the header stay on the bottom of the page?? My second question is, what would be the easiest way to add sidebar subitems that slide-right on hover...?? Thanks in advance

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• Etiquette for refactoring other people's sourcecode?

  - by Prutswonder

  Our team of software developers consists of a bunch of experienced programmers with a variety of programming styles and preferences. We do not have standards for everything, just the bare necessities to prevent total chaos. Recently, I bumped into some refactoring done by a colleague. My code looked somewhat like this: public Person CreateNewPerson(string firstName, string lastName) { var person = new Person() { FirstName = firstName, LastName = lastName }; return person; } Which was refactored to this: public Person CreateNewPerson (string firstName, string lastName) { Person person = new Person (); person.FirstName = firstName; person.LastName = lastName; return person; } Just because my colleague needed to update some other method in one of the classes I wrote, he also "refactored" the method above. For the record, he's one of those developers that despises syntactic sugar and uses a different bracket placement/identation scheme than the rest of us. My question is: What is the (C#) programmer's etiquette for refactoring other people's sourcecode (both semantic and syntactic)?

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• Silverlight Navigation Menu

  - by Justin

  I am using the Silverlight Business Application Template. The navigation consists of a few HyperlinkButtons in a StackPanel. I would like to create a more robust navigation menu (multilevel) with dropdowns and such. Telerik has one for silverlight (http://demos.telerik.com/silverlight/#Menu/FirstLook) I don't want to use Telerik control because its too expensive and I have tons of problems with Telerik. I've Googled it but including "Navigation" in my search seems to only include results about the navigation framework. Anyway, anyone have a good example?

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• .NET or Windows Synchronization Primitives Performance Specifications

  - by ovanes

  Hello *, I am currently writing a scientific article, where I need to be very exact with citation. Can someone point me to either MSDN, MSDN article, some published article source or a book, where I can find performance comparison of Windows or .NET Synchronization primitives. I know that these are in the descending performance order: Interlocked API, Critical Section, .NET lock-statement, Monitor, Mutex, EventWaitHandle, Semaphore. Many Thanks, Ovanes P.S. I found a great book: Concurrent Programming on Windows by Joe Duffy. This book is written by one of the head concurrency developers for .NET Framework and is simply brilliant with lots of explanations, how things work or were implemented.

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• cannot find vcvarsall.bat when runnning a pyhton script

  - by Ariel

  hello all, i am working on vista, and using python 2.6.4. i am using a software which uses a python script. but then i bumped into the message "cannot find vcvarsall.bat". so i installed visual c++ 2010. still the file is not found though it is there. my guess (a very uneducated one...) is that somewhere the path is wrong, because i also have an old visual 2008 (pretty empty) folder. since i have little idea in programming i have no idea where to make the changes for the new path. do i change something in the registery or in the script. i would be happy if somebody could help (preferably in lamen terms). thanx. Ariel

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• Determining default character set of platform in Java

  - by Anand

  I am programming in Java I have the code as: byte[] b = test.getBytes(); In the api it is specified that if we do not specify character encoding it takes the default platform character encoding. What is meant by "default platform character encoding" ? Does it mean the Java encoding or the OS encoding ? If it means OS encoding the how can i check the default character encoding of Windows and Linux ? Is there anyway we can get the default character encoding using command line ?

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• Cocoa: getting a Table View cell to send action messages

  - by underthetable

  I'm really having trouble getting a Cocoa Table View cell to send action messages. At the most basic level, in IB there is an action assigned for the NSTextViewCell object, and after editing and pressing Return nothing happens. So I have an IBOutlet hooked up to the NSTextViewCell, and have been experimenting with NSActionCell messages to it. But the Table View seems to pretty much just ignore them. I've also tried subclassing NSTextViewCell, but the methods I'm seeing all look like they want to pass values to the object from somewhere, not return a value from inside the object to configure its behavior. I'm pretty new to programming and Cocoa -- can someone explain each thing that needs to be overridden and how and where to do it?

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• Why do I see a large performance hit with DRBD?

  - by BHS

  I see a much larger performance hit with DRBD than their user manual says I should get. I'm using DRBD 8.3.7 (Fedora 13 RPMs). I've setup a DRBD test and measured throughput of disk and network without DRBD: dd if=/dev/zero of=/data.tmp bs=512M count=1 oflag=direct 536870912 bytes (537 MB) copied, 4.62985 s, 116 MB/s / is a logical volume on the disk I'm testing with, mounted without DRBD iperf: [ 4] 0.0-10.0 sec 1.10 GBytes 941 Mbits/sec According to Throughput overhead expectations, the bottleneck would be whichever is slower, the network or the disk and DRBD should have an overhead of 3%. In my case network and I/O seem to be pretty evenly matched. It sounds like I should be able to get around 100 MB/s. So, with the raw drbd device, I get dd if=/dev/zero of=/dev/drbd2 bs=512M count=1 oflag=direct 536870912 bytes (537 MB) copied, 6.61362 s, 81.2 MB/s which is slower than I would expect. Then, once I format the device with ext4, I get dd if=/dev/zero of=/mnt/data.tmp bs=512M count=1 oflag=direct 536870912 bytes (537 MB) copied, 9.60918 s, 55.9 MB/s This doesn't seem right. There must be some other factor playing into this that I'm not aware of. global_common.conf global { usage-count yes; } common { protocol C; } syncer { al-extents 1801; rate 33M; } data_mirror.res resource data_mirror { device /dev/drbd1; disk /dev/sdb1; meta-disk internal; on cluster1 { address 192.168.33.10:7789; } on cluster2 { address 192.168.33.12:7789; } } For the hardware I have two identical machines: 6 GB RAM Quad core AMD Phenom 3.2Ghz Motherboard SATA controller 7200 RPM 64MB cache 1TB WD drive The network is 1Gb connected via a switch. I know that a direct connection is recommended, but could it make this much of a difference? Edited I just tried monitoring the bandwidth used to try to see what's happening. I used ibmonitor and measured average bandwidth while I ran the dd test 10 times. I got: avg ~450Mbits writing to ext4 avg ~800Mbits writing to raw device It looks like with ext4, drbd is using about half the bandwidth it uses with the raw device so there's a bottleneck that is not the network.

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• Silverlight MVVM conversion from WPF

  - by IrishJoker

  I was reading this article - http://msdn.microsoft.com/en-us/magazine/dd419663.aspx And I came across this piece of code in the WPF Demo application that came with the article. This template applies a CustomerView to an instance of the CustomerViewModel class shown in the main window. <DataTemplate DataType="{x:Type vm:CustomerViewModel}"> <vw:CustomerView /> </DataTemplate> I substituted the angle brackets for square brackets - not sure how to post them. The code is in the MainWindowResourses.xaml and the code starts on line 19. Anyone know how I can do this in Silverlight ?? We don't have the DataType and I need to be able to tell the app that this View is associated with this ViewModel - so I can create a tab control with different view like the demo app. Cheers, EC

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• CakePHP with AJAX loaded pages

  - by Jacques Wolfghang

  Hi there. I am trying to create a website in which all interaction takes place on a single page which has its main content filled via AJAX. The site is effectively a template with a central interaction area. Users can click links which results in an AJAX request to fetch a new page to display in the interaction area. In this way, the page never refreshes, instead it has its content fetched and displayed via AJAX. I have found that the CakePHP framework has many useful features that could work with this project, however, I do not no if the Cake's MVC architecture would work with my single page architecture. So, what I really want to know is if I can use CakePHP features and functions on a website of this type, and also if anyone could give me any helpful tips on how I would go about implementing it. I am sorry if this is rambling or vague, english is not my mother tongue so I have trouble expressing what I have to say clearly. Thank you for your time.

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• Tracking Google Analytics events with server side request automation

  - by Esko

  I'm currently in the process of programming an utility which generates GA tracking pixel (utm.gif) URL:s based on given parameters. For those of you who are wondering why I'm doing this on the server side, I need to do this server side since the context which I'm going to start tracking simply doesn't support JavaScript and as such ga.js is completely useless to me. I have managed to get it working otherwise quite nicely but I've hit a snag: I can't track events or custom variables because I have no idea how exactly the utme parameter's value should be structured to form a valid event or var type hit. GA's own documentation on this parameter isn't exactly that great, either. I've tried everything from Googling without finding anything (which I find ironic) to reverse engineering ga.js, unfortunately it's minified and quite unreadable because of that. The "mobile" version of GA didn't help either since officially GA mobile doesn't support events nor vars. To summarize, what is the format of the utme parameter for page hit types event and custom variable?

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• Converting JSON into Python dict

  - by GrumpyCanuck

  I've been searching around trying to find an answer to this question, and I can't seem to track it down. Maybe it's too late in the evening to figure the answer out, so I turn to the excellent readers here. I have the following bit of JSON data that I am pulling out of a CouchDB record: "{\"description\":\"fdsafsa\",\"order\":\"1\",\"place\":\"22 Plainsman Rd, Mississauga, ON, Canada\",\"lat\":43.5969175,\"lng\":-79.7248744,\"locationDate\":\"03/24/2010\"},{\"description\":\"sadfdsa\",\"order\":\"2\",\"place\":\"50 Dawnridge Trail, Brampton, ON, Canada\",\"lat\":43.7304774,\"lng\":-79.8055435,\"locationDate\":\"03/26/2010\"}," This data is stored inside a Python dict under the key 'locations' in a dict called 'my_plan'. I want to covert this data from CouchDB into a Python dict so I can do the following in a Django template: {% for location in my_plan.locations %} <tr> <td>{{ location.place }}</td> <td>{{ location.locationDate }}</td> </tr> {% endfor %} I've found lots of info on converting dicts to JSON, but nothing on going back the other way Thanks in advance for the help!

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• Reordering matrix elements to reflect column and row clustering in naiive python

  - by bgbg

  Hello, I'm looking for a way to perform clustering separately on matrix rows and than on its columns, reorder the data in the matrix to reflect the clustering and putting it all together. The clustering problem is easily solvable, so is the dendrogram creation (for example in this blog or in "Programming collective intelligence"). However, how to reorder the data remains unclear for me. Eventually, I'm looking for a way of creating graphs similar to the one below using naive Python (with any "standard" library such as numpy, matplotlib etc, but without using R or other external tools).

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• Cassandra and asp.net (C#)

  - by Sergey Osypchuk

  I am interested to create portal on cassandra services, since I faced some performance and scale issues starting from 1 million of records. Definitely, it could be solved, but I am interested on other options. My main issues is cost of updating all necessary indexes, to make reading fast. First, is cassandra is good way for asp.net programmers? I mean, maybe there is some other projects, which worth to take a look And second, can you provide any documentation samples on how to start with cassandra programming from C#?

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• Get the currently saved object in a view in Django

  - by mridang

  Hi, I has a Django view which is accessed through an AJAX call. It's a pretty simple one — all it does is simply pass the request to a form object and save the data. Here's a snippet from my view: form = AddSiteForm(request.user, request.POST) if form.is_valid(): obj = form.save(commit=False) obj.user = request.user obj.save() data['status'] = 'success' data['html'] = render_to_string('site.html', locals(), context_instance=RequestContext(request)) return HttpResponse(simplejson.dumps(data), mimetype='application/json') How do I get the currently saved object (including the internally generated id column) and pass it to the template? Any help guys? Mridang

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• Web Page Rendering Capture

  - by Chaitanya

  I start with describing the problem itself. Rather than a problem I'm looking for a better solution. I have a asp.net page which has a bunch of images and a link underneath it, Each image is infact the latest rendering of the link underneath it. I scheduled a bat script which runs every hour to fetch the images through IECapt a web page rendering capture utility. One thing am annoyed about this utility is it takes a lot of time for the 20 images I have and for few because of the flash content it misses to take the actual screenshot of the website. Now I like to know can this rendering be done by traditional programming am not interested in using any utilities. I'm interested in trying this. The solution need not be necessarily a C# based am ready to try in any other language. Because it gives me a chance to learn. Thank you.

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• Language Design: Combining Gotos and Functions

  - by sub

  I'm designing and currently rethinking a low-level interpreted programming language with similarities to assembler. I very soon came across the functions/loops/gotos decision problem and thought that while loops like while and for would be too high-level and unfitting, gotos would be too low level, unmaintainable and generally evil again. Functions like you know them from most languages that have return values and arguments aren't fitting in the language's concept either. So I tried to figure out something between a function and a goto which is capable of Recursion Efficient loops After some thinking I came up with the idea of subroutines: They have a beginning and an end like a function They have a name but no arguments like a goto You can go into one with jump and go out of it again before its end with return (doesn't give back any result, only stops the subroutine) Handled just like normal code - Global scope like goto So I wanted to know: Is the idea above good? What are the (dis)advantages? Would there be a better combination of function and goto or even a completely new idea?

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• How to create my own recommendation engine?

  - by Burak Dede

  i am intrested in recommendation engines these days and i wanna improve myself in this area.I am currently reading Programming Collective Intelligence (i think this is the best book about this subject) from OReilly (just started).But i dont have any ideas how to implement engine(what i mean by no idea dont know how to start).Lets say i have project like LastFM in my mind where do (should be implemented on database side or backend side)i start creating recommnedation engine? what level database knowledge will needed? is there any open source ones that can be used for help or any resource? what should be the first steps that i have to do?

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• sharp architecture question - no strongly typed views

  - by csetzkorn

  Hi, I am trying to get my head around the sharp architecture and used the visual studio template as described on the web: http://wiki.sharparchitecture.net/VSTemplatesAndCodeGen.ashx This is all cool. Unfortunately, I cannot add a strongly typed view as easily as I am used to ‘under’ asp.net mvc. What can I do to ‘enable’ this in VS 2008 Prof? I have also installed asp.net mvc 2.0 and would like to reflect this in my ‘vs studio sharp environment’. Any pointers would be very much appreciated. Many thanks in advance. Best wishes, Christian

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• django internationalization doesn't work

  - by xRobot

  I have: * created translation strings in the template and in the application view. * run this command: django-admin.py makemessages -l it and the file it/LC_MESSAGES/django.po has been created * translated strings in the django.po file. * run this command: django-admin.py compilemessages and I receive: processing file django.po in /home/jobber/Desktop/library/books/locale/it/LC_MESSAGES * set this in settings.py: LANGUAGE_CODE = 'it' TEMPLATE_CONTEXT_PROCESSORS = ( "django.core.context_processors.auth", "django.core.context_processors.debug", "django.core.context_processors.i18n", "django.core.context_processors.media", ) USE_I18N = True MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', 'django.middleware.locale.LocaleMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', ) but.... translation doesn't work !! I always see english text. Why ?

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