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• Connect to MySQL in Ruby using NetBeans

  - by Varun

  I've downloaded the "dbd-mysql-0.4.4.zip" and linked it to my project. While I try to run a demo code from NetBeans the very first line require "dbi" gives me an error. Is there a different way to do it? I also tried jruby setup.rb config --with=dbi,dbd_mysql from the command prompt and it gave me the following error: config: unknown option --with=dbi,dbd_mysql Try 'ruby setup.rb --help' for detailed usage. Any suggestions please?

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• What alternatives to __attribute__ exist on 64-bit kernels?

  - by Saifi Khan

  Hi: Is there any alternative to non-ISO gcc specific extension __attribute__ on 64-bit kernels ? Three types that i've noticed are: function attributes, type attributes and variable attributes. eg. i'd like to avoid using __attribute__((__packed__)) for structures passed over the network, even though some gcc based code do use it. Any suggestions or pointers on how to entirely avoid __attribute__ usage in C systems/kernel code ? thanks Saifi.

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• Really fast C++ html parser

  - by Alessandro

  Hello to all, I'm doing a html text feature extractor in C++; the program need to be REALLY fast: i need to extract a this features in ms per html page and the memory usage needs to be good and finally unicode encoding well be nice. I know how difficult is to have all of this things, but i want a parser close to these things at least. Somebody have a suggestion?

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• variable argument list in windows va_list

  - by shrikant

  hi, I wanted to have function which will accept as foo(...) { } usage of this would be foo(1,2,3); foo(1) foo(1,2,3,4,5,5,6); va_list can be used but again for that I have to pass foo(int count, ...), as this at run time i dont know how many argument i have. any pointer would be appreciated Thanks

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• Object or primitive type

  - by John

  Hi, Can someone explain to me the usage of Integer, Boolean etc in place of their primitive types in JAVA? I can't seem to grasp the advantages their are providing. They seem to create unnecessary problems of handling null values. Thanks!

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• showing .tif images in matlab

  - by sepideh

  I am trying to show a .tif image in matlab and I use these two line of codes a = imread('C:\Users\sepideh\Desktop\21_15.tif'); imshow(a) that encounters this warning Warning: Image is too big to fit on screen; displaying at 3% In imuitools\private\initSize at 73 In imshow at 262 what is the cause of this warning and what can I do to fix that? the main trouble is it sometimes doesn't show the image and of course even if it shows the image CPU usage gets high that I can't zoom properly

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• using # instead of . in API documentation

  - by landon9720

  In API documentation, and sometimes even used in discussions here on Stack Overflow, I sometimes see the pound (#) character used instead of the dot (.) as the separator between the class name and the method name. For example: Settings#maxPageSize I'm wondering what this usage means, and where it comes from?

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• Looking for industry numbers on source code management

  - by Dave Duchene

  I'm looking for statistics on SCM usage, in particular I'm trying to find out what percentage of their time developers spend on SCM-related tasks. The more detailed the breakdown, the better. Online and offline resources would both be tremendously useful to me. Can anyone point me towards some industry studies? Preferably recent ones?

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• Free JVM profilers for websites

  - by 2Real

  I'm looking for a JVM profiler (preferably open source) so I can look at the heap and cpu usage of my personal website. I've used Lambda Probe, and I like it because it provides a web interface for my remote Unix computer that has no display. I was wondering what else is available Thanks,

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• magento https error

  - by Ela

  when i made https enabled in secure url and front end secure url usage to yes in magento the checkout page becomes not found. Should i need to do anything more? where i have to place my ssl certificates. please help me in this

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• Multiple language examples in XML Documentation

  - by Ricky Smith

  Is there a way to include examples for multiple languages (C# and Visual Basic, for example) in XML documentation? I'm using SandCastle to build MSDN-style documentation and would like to include usage examples for a few .NET languages.

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• What is the "system sequence" field used for in Visio?

  - by Otter

  When placing message calls (arrows from one active lifeline to another) in a system sequence diagram in Visio, I noticed that there is a property called "system sequence." Anyone know what the intended usage of this field is?

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• Are there any FREE Xaml Diff/Merge tools available?

  - by Ahikam

  I am searching a free diff tool with support of native syntax and markup for XAML, but failed to find one. I like Altova's DiffDog but it's paid. CodeCompare is an useful tool. It has some worth with its integration into VisualStudio and usage of native editors. It's a perfect solution for XML! However, it does not support XAML editors. Who can recommend a diff tool for XAML?

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• traits in php – any real world examples/best practices?

  - by Max

  Traits have been one of the biggest additions for PHP 5.4. I know the synatax and understand the idea behind traits, like horizontal code re-usage for common stuff like logging, security, caching etc. However, I still dont know yet how I would make use of traits in my projects. Are there any open source projects that already use traits? Any good articles/reading material on how to structure architectures using traits?

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• Merge decorator function as class

  - by SyetemHog

  How to make this merge function as class decorator? def merge(*arg, **kwarg): # get decorator args & kwargs def func(f): def tmp(*args, **kwargs): # get function args & kwargs kwargs.update(kwarg) # merge two dictionaries return f(*args, **kwargs) # return merged data return tmp return func Usage: @other_decorator # return *args and **kwarg @merge(list=['one','two','three']) # need to merge with @other_decorator def test(*a, **k): # get merged args and kwargs print 'args:', a print 'kwargs:', k

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• How to display webcam on client side only?

  - by Eric

  I'd like to show a webcam inside a browser without any server interaction. Everything should happen client side with minimal plugins usage. This would replicate most default webcam software bundled with the cam itself.

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• The single most useful Emacs feature

  - by Readonly

  My primary editor is Emacs, but my usage habits and knowledge of features has barely changed over the last few years. What are the Emacs features that you use on a daily basis? Are there any little-known Emacs features that you find very useful? Edit: Made this into the recommended poll format...please put one feature per answer from now on.

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• How to use length indicator in a C++ program

  - by cj

  I want to make a program in C++ that reads a file where each field will have a number before it that indicates how long it is. The problem is I read every record in object of a class; how do I make the attributes of the class dynamic? For example if the field is "john" it will read it in a 4 char array. I don't want to make an array of 1000 elements as minimum memory usage is very important.

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• SQL and/or LINQ query for determining daily increases in viewers

  - by Gio

  We're montioring usage of a certain resources by monitoring users logins (We can see user logins growing daily). After filtering out repeat inter day logins for users, we'd like to track the # of users using the service each day, and then using that info to determine overall incremental gains for each calendar day. Our table is pretty simple: class ServiceLogin { String login; DateTime loginTime; }

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• Using many mutex locks

  - by hanno

  I have a large tree structure on which several threads are working at the same time. Ideally, I would like to have an individual mutex lock for each cell. I looked at the definition of pthread_mutex_t in bits/pthreadtypes.h and it is fairly short, so the memory usage should not be an issue in my case. However, is there any performance penalty when using many (let's say a few thousand) different pthread_mutex_ts for only 8 threads?

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• CSS: content:"\00a0"

  - by SteD

  Today I came across a new CSS syntax that I have never seen before content:"\00a0"; Checking it on w3schools, it explains: Definition and Usage The content property is used with the :before and :after pseudo-elements, to insert generated content. My question is, can you point out to me in real world example, how do we use this 'content' syntax? And what does the \00a0 mean in this case?

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• Visual Studio Solution: static or shared projects?

  - by goodrone

  When a whole project (solution) consists of multiple subprojects (.vcproj), what is a preferable way to tie them: as static libraries or as shared libraries? Assuming that those subprojects are not used elsewhere, the shared libraries approach shouldn't decrease memory usage or load time.

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• Recaptcha - Availability in China

  - by wacdany

  We are developing a site that will require the usage of a captcha service. Has anyone successfully use Google Recaptcha (https://www.google.com/recaptcha/intro/index.html) for a website for users from Mainland China? Did you have major problems with load-time? Did you experience any reliability problems? Any problems with the great firewall of china? Any experience that you can share is appreciated.

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• How do I store and switch over preferences?

  - by kunjaan

  I want to store some user preferences Would Enum be a good datastructure to store them? If so, how do I do it? This is the final usage of the datastructure. main(){ int my_val = PREFERENCES.BLACK; switch(PREFERENCES){ case BLACK: ... }

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• Language to write a Windows application that doesn't take up a lot of space

  - by bobir

  I need to write a Windows XP/Vista application, main requirements: Just one .exe file, without extra runtime, like Air, .Net; posstibly a couple of dlls. Very small file size. The application is for network centric usage, similar to ICQ or Gtalk clients.

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