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• Saving a grails object with a composite id

  - by Jared

  The answer to this may be obvious but how do you save an object, in grails, that has a composite id. I have an object that has a composite id including a long and a date and I am trying to save an instance of the object from the update method of another classes controller, and using (object).save() isn't working. Any tips or suggestions?

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• Maximum Width of a Printed Double in C++

  - by Cenoc

  I was wondering, how long in number of characters would the longest a double printed using fprintf be? My guess is wrong. Thanks in advance.

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• Putting newline in matplotlib label with TeX in Python?

  - by user248237

  How can I add a newline to a plot's label (e.g. xlabel or ylabel) in Matplotlib? For example, plt.bar([1, 2], [4, 5]) plt.xlabel("My x label") plt.ylabel(r"My long label with $\Sigma_{C}$ math \n continues here") Ideally i'd like the y-labeled to be centered too. Is there a way to do this? It's important that the label have both tex (enclosed in '$') and the newline. thanks.

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• Is it safe to make GL calls with multiple threads?

  - by user146780

  I was wondering if it was safe to make GL calls with multiple threads. Basically I'm using a GLUtesselator and was wondering if I could divide the objects to draw into 4 and assign a thread to each one. I'm just wondering if this would cause trouble since the tesselator uses callback functions. Can 2 threads run the same callback at the same time as long as that callback does not access ant global variables? Are there also other ways I could optimize OpenGL drawing using multithreading? Thanks

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• 2k rows update is very slow in MySQL

  - by sergeik

  Hi all, I have 2 tables: 1. news (450k rows) 2. news_tags (3m rows) There are some triggers on news table update which updating listings. This SQL executes too long... UPDATE news SET news_category = some_number WHERE news_id IN (SELECT news_id FROM news_tags WHERE tag_id = some_number); #about 3k rows How can I make it faster? Thanks in advance, S.

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• .NET - alpha-numeric representation of numbers

  - by mack369

  I'm implementing serial key functionality in my application. User needs to enter at least 64bit number in order to register the application. Because typing number like 9,223,372,036,854,775,807 will take a while I want to compress it a bit. The first guess was to code this number hexadecimally but it still is quite long (0x7FFF FFFF FFFF FFFF). Is there any standard method in .NET to code this number alphanumerically using for example: digits, upper-case and lower-case characters?

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• Good or Bad experiences with CryptoLicensing?

  - by dr. evil

  I'm planning to buy CryptoLicensing but before buying it I'd like to get some feedbacks if anyone tried it before. Also it'd be interesting if anyone cracked it or spotted an easy hack against it. I've seen some other SO questions regarding the choosing a .NET licensing component but if you currently happy with another component it'd be nice to hear your experience. It's just quite hard to nail this without going through a long trial.

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• XMLHttpRequest works in ASP.NET development server, but not in IIS 6.0

  - by Apocatastasis

  Hi. I'm sending data to a web service through the MSXML2.XMLHTTP40 object. It's works fine in the development enviroment, but IIS is unable to send the data (long wait and then IIS close the connection). I must configure some in IIS in order to enable XMLHttpRequest ?

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• R: How to write out a data.frame so that I can paste it into SO for others to read?

  - by John

  I have a large data.frame displaying some weird properties when plotted. I'd like to ask a question about it on Stackoverflow, to do that I'd like to write the data.frame out in a form that I can paste it into SO and somebody else can easily run it and have it back into a data.frame object again. Is there an easy way to accomplish this? Also, if it is really long, should I use paste bin instead of directly paste it here?

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• How do I enable FFMPEG logging and where can I find the FFMPEG log file?

  - by undefined

  I want to be able to log FFMPEG processes because I am trying to work out how long a minute of video takes to convert to help with capacity planning of my video encoding server. How do I enable logging and where is the log file saved. I have FFMPEG installed on a CentOS LAMP machine.

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• Execution issue with PyModule_AddIntConstant function

  - by karnol

  I m learning python c api functions and keen to learn python 3.1 stable version. Found an unresolved issue recently and tried PyModule_AddIntConstant(PyObject *module, const char *name, long value) Runtime error occurred for this function call. Is there something wrong with the function in python 3.1?

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• How does the CLR know the type of a boxed object?

  - by fearofawhackplanet

  When a value type is boxed, it is placed inside an untyped reference object. So what causes the invalid cast exception here? long l = 1; object obj = (object)l; double d = (double)obj;

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• Calling constructors in c++ without new

  - by Nils

  I've often seen that people create objects in C++ using Thing myThing("asdf"); Instead of Thing myThing = myThing("asdf"); This seems to work (using gcc), at least as long as there are no templates involved. My question now, is the first line correct and if so should I use it?

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• Leading a Developer Meeting?

  - by hypoxide

  I've recently inherited responsibility for organizing and running the hour long monthly developer meetings at my office. I've only been out of college for 2 years so I'm kind of intimidated by holding the reins for this type of thing. The group is composed of about 20 developers, more than half of which are significantly more senior than I am. I need some tips on how to make this meeting valuable for everybody, as well as any possible advice/consolation/condolences you can give me.

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• Resolving C++ Name Collision

  - by jnm2

  InitializeQTML is a function in QTML.h. I'm writing a wrapper and I would like to use the name InitializeQTML for the wrapper function: #include <QTML.h> public class QuickTime { public: static void InitializeQTML(InitializationFlags flag) { InitializeQTML((long)flag)); }; }; How can I reference the original InitializeQTML function from inside the wrapper function and avoid the name collision without renaming the wrapper?

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• How to handle main option with Getopt

  - by Jérôme

  I want to handle a feature which seems to me almost natural with programs, and I don't know how to handle it with Getopt perl package (no matter Std ot Long). I would like something like: ./perlscript <main option> [some options like -h or --output-file some_name] Options will be handled with - or --, but I want to be able to let the user give me the main and needed option without dashes. Is Getopt able to do that, or do I have to handle it by hand?

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• Can a CSS class inherit one or more other classes?

  - by Joel Martinez

  I feel dumb for having been a web programmer for so long and not knowing the answer to this question, I actually hope it's possible and I just didn't know about rather than what I think is the answer (which is that it's not possible). My question is whether it is possible to make a CSS class that "inherits" from another CSS class (or more than one). For example, say we had: .something { display:inline } .else { background:red } What I'd like to do is something like this: .composite { .something; .else } where the ".composite" class would both display inline and have a red background

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• Changing window procedure for console window

  - by Anonymous

  I want to make console window with a functional tray icon. I figured out that most probably it is necessary to replace initial console's window procedure so I will be able to control all messages including notify area events. But SetWindowLong function returns 0, and GetLastError() tells that access is denied. hwndFound = GetConsoleWindow(); SetWindowLong(hwndFound, GWL_WNDPROC, (long)WndProc); What could it be, or maybe there is some other way to control tray icon manipulations?

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• Automatically download files in Ruby

  - by Obinna

  I'm trying to write a ruby script which automatically downloads some files from some server ever 30-45 minutes (to prevent overload) as long as my computer is turned on. It's possible that my computer might be turned off at some point, but the download should resume (probably re-download the current file). I already have the file list but I can't figure out how to make such a script to run autonomously. What are some ways I can do this?

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• Visual Studio 2010 - Is it slow for anyone else?

  - by AngryHacker

  I've read a lot of stuff about VS2010 being much more performant than VS2008. When I've finally installed it, I found that it, in fact, is much slower (save for the Add References dialog). For instance, Silverlight projects take twice as long to load, the startup of the IDE itself is much slower, etc... Am I missing something here or is it like this for everyone?

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• Emacs shell-command restart on crash

  - by Hamza Yerlikaya

  Is it possible to detect when a long running process started with shell-command crashes, so it can automatically be restarted? Without manually checking its buffer and restarting by hand.

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• How can I associate .sh files with Cygwin?

  - by Jerph

  I'd like to run a long rsync command in Cygwin by double clicking on a .sh file in Windows. It must start in the file's containing directory (e.g. /cygdrive/c/scripts/) so that relative paths work. Anyone gotten this to work? Note: I've just found chere, a Cygwin package that manages Windows context menus (Bash Prompt Here). It might have some clues.

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• Making a python script run at a set rate.

  - by Matt1024

  How can I make a python loop run at a set rate regardless of how long it takes to execute commands in the loop (providing the commands take less time to run than the loop is allowed)? How can I make this run every 0.25 seconds, for example? while True: print("OK")

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• What data type to use for variable length data (for performance)?

  - by jiewmeng

  What data type should I use for data that can be very short, eg. html link (think twitter), or very long eg. html blog post (think wordpress). I am thinking if I use varchar(4000), it maybe too short for a html formated blog entry? but if I use text, it will take up more space and is less efficient?

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• Binary string search on one field.

  - by CrazyJoe

  I have 300 boolean fields in one table, and im trying to do somithing like that: One string field: 10000010000100100100100100010001 Ha a simple way to do a simple search os this field like: select * from table where field xor "10000010000100100100000000010001" Im tring this but is to long: select * from teste where mid(info,2,1) and mid(info,3,1) :) Help!!

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