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• How do I create and read non-global variables that aren't destroyed at end of function?

  - by Paul Reilly

  I am attempting to code some plugins to use with MIDI sequencers but have hit a stumbling block. I can't use global-scope variables to store information because multiple instances of the .dll can exist which share memory. How do I create a class (for re-usability purposes in other plugins) containing 2 dimensional array and other variables the content of which is to be shared between functions? If that is possible, how would I read and write the data from the function in the framework where I do the processing?

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• How should a Gnome applet store its configuration data?

  - by George Edison

  I have a Gnome applet written in Python. In order to save configuration data/settings, it creates a file ~/.appname. However, this prevents multiple instances of the applet from being added to the panel because each cannot have its own settings. How can I store the settings in a way that allows each instance to have its own unique settings? Update: I specifically want to know how to store settings per instance.

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• How to choose between UUIDs, autoincrement/sequence keys and sequence tables for database primary keys?

  - by Tim

  I'm looking at the pros and cons of these three primary methods of coming up with primary keys for database rows. So assuming I am using a database that supports more than one of these methods, is there a simple heuristic to determine what the best option would be for me? How do considerations such a distributed/multiple masters, performance requirements, ORM use, security and testing have on the choice? Any unexpected drawbacks that one might run into?

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• How could I generate instances of an object randomly at the top of the screen and make them "fall"?

  - by Custard

  I am making a game in Flash CS4 (actionscript 3) and I would like to be able to make "copies" of an instance that would randomly appear at the top of the screen and fall. For example, multiple objects(that are the same one) are falling from the top of the screen continuously, starting at random X positions. (i think this would be considered Real-Time effect). P.S., please tell me if the information is insufficient for an answer, I couldn't think of much more to add to it. Thanks for your time and answers, -Custard

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• Batch File Wildcards

  - by thebourneid

  I want to generate a bat file for multiple tag processing and the command lines look like this: "C:\Program Files (x86)\tools\tag.exe" -t Genre="%genre%" "%_folderpath%\%track%. %title%.%_extension%" IF ERRORLEVEL==1 PAUSE I can populate all variables automatically but can I replace the %title% variable with a wildcard?

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• There is any theory about gain by the recompression of a compressed file ?

  - by Cesar

  I would like to know if anyone know something about the re-compression of a file multiple times, with gain and if there is a theoretical limit to the gain. possible related to: How many times a file be compressed?

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• MSI Parameter Inspection

  - by Ben Breen

  With a windows MSI file, is there a way to grab all the possible installation parameters in .NET code? I need to make a generic user interface to configure multiple MSI files not known until run-time – then install them together in one go.

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• Is there any language other than Java that will work as ubiquitous on mobile?

  - by Adam Gent

  I'm trying to write a rogue-like game for my blackberry and hopefully any other phone that supports some sort of JVM. Because I use Java in my job I'm looking to write the game in another language but I cannot find a language that will work on multiple phones. Am I stuck with Java?

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• Is HashMap in Java collision safe

  - by changed

  Hi I am developing a parser that needs to put key value pairs in hashmap. But a key can have multiple values which i can do in this way HashMap<String,ArrayList<String>> . But what happens if number of keys are very large and it start matching with other key's hashcode. Will that rewrite previous key's value ? thanks -devSunday

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• Why would I use Dropbox *and* Git for my Emacs initialization file?

  - by Michiel Borkent

  I hear a lot of Emacs users have their init file under git version control and sync the git repository over Dropbox, when they run Emacs on multiple systems. Why would you use git in this situation exactly? Usually checking which system you're on and which things to load and set depending on that can happen in one and the same init file for all systems, right? So, isn't it simply enough to put your init file in a Dropbox directory and load that one directly from Emacs then?

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• jQuery javascript dynamic menus with mbMenu plugin

  - by lafoaug

  Im using the MbMenu jQuery plugin. http://plugins.jquery.com/project/mbMenu http://pupunzi.open-lab.com/2009/01/18/mbmenu/ I am probably being ridiculously stupid but I wish to have multiple menus on the same page, but not load them from external files (the html structure of the menu already exists on the page). To me the only place you define what menu is linked to the element you call buildMenu on is the 'template' construction which is a external file. Thanks.

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• C99 variable length automatic array performance

  - by aaa

  Is there significant cpu/memory overhead associated with using automatic arrays with g++/Intel on 64-bit x86 linux platform? int function(int N) { double array[N]; overhead compared to allocating array before hand (assuming function is called multiple times) overhead compared to using new overhead compared to using malloc The range of N may be from 1kb to 16kb roughly, stack overrun is not a problem.

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• Validation - Data Integrity

  - by Thomas

  A table can only store 10 records in a particular state, 10 users over 30 years for example, the others must be less than 30 years. It is a business rule and as such should be respected. How to ensure that state? Think: multiple users accessing this table.

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• How to select item in jComboBox

  - by jtnire

  Hi folks, I have a jComboBox that I am populating with some objects. The objects are of a type which I have made myself, and include a String and an int. The object's toString method returns the String, which is displayed in the Combo Box. Now, I wish to select an item in the Combo Box with code. How do I do this? There are multiple items starting with the same letter Thanks

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• swing layout: vertical flow

  - by pstanton

  Hi All, What LayoutManager should I use to achieve a transposed version of FlowLayout? Essentially, I want a vertical list which occupies multiple columns if it can't fit all of it's components within one column. +------------------------+ | item 1 | | item 2 | | item 3 | | item 4 | | item 5 | | item 6 | | item 7 | | item 8 | +------------------------+ or +------------------------+ | item 1 item 7 | | item 2 item 8 | | item 3 | | item 4 | | item 5 | | item 6 | +------------------------+

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• copy Word document contents without using clipboard (VBA)

  - by keftebub

  I was wondering how to avoid using Windows clipboard, when you want to "replicate" multiple sections of a Word document (using VBA in macros) Why to avoid? Because we're using Word on a server, in a multiuser environment (I know that it is officially frowned upon) Otherwise, this would be easily accomplished with Selection.Copy and Selection.Paste methods. Thanks.

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• Best practice - Accessing preferences globally

  - by JK

  User preferences for my app is store in NSUserDefaults. This includes a "theme" preference, which needs to be accessed frequently by multiple classes. I would prefer not to call "[[NSUserDefaults standardUserDefaults] objectForKey:..." repeatedly as it makes for inconcise code and I assume will incur overhead. What is the preferred and most concise method for accessing preferences in any class?

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• Using MSBuild, how to construct a dynamic string from iterating over files in an ItemGroup?

  - by RyBolt

  I need to create multiple /testcontainer: parameters to feed into a task that exec's MsTest. I have the following : <ItemGroup> <TestFiles Include="$(ProjectPath)\**\UnitTest.*.dll" /> </ItemGroup> for each match in TestFiles I would like to build a string like so: "/testcontainer:UnitTest.SomeLibrary1.dll" "/testcontainer:UnitTest.SomeLibrary2.dll" "/testcontainer:UnitTest.SomeLibrary3.dll" I am trying to use the internals of MSBuild without having to create a custom task, is this possible ? TIA

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• crystal reports sticky problem

  - by mahesh

  hi I have a project with following sql table companymaster expbill invcarat companyId companyid companyId name invno invno address buyer srno telno consignee qty rate amount I have tried many times by the way of ADO.Dataset with multiple sql query but reports show like sticky problems. the details section repeating from diferent companyID and invno am tired don't know how to overcome from this kindly provide me better solution with good example.

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• How do I coalesce a sequence of identical characters into just one?

  - by alex

  Suppose I have this: My---sun--is------very-big---. I want to replace all multiple hyphens with just one hyphen.

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• 'goto' usage

  - by Landon

  I've long been under the impression that 'goto' should never be used if possible. While perusing libavcodec (which is written in C) the other day, I noticed multiple uses of it. Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?

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• Watir question regarding select_list and reloading

  - by AJ

  I have a drop down with multiple options. Whenever you choose an option, the page reloads with data specific with that option. Currently I'm using select.list(:name, strg).set(value) and it does that part just fine, but it does not reload the page with the specific data. Anyone know how to help. When i watch it in action, it doesn't select the option either, but my logs show that it does.Thanks.

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• How do I use a MySQL subquery to count the number of rows in a foreign table?

  - by James Skidmore

  I have two tables, users and reports. Each user has no, one, or multiple reports associated with it, and the reports table has a user_id field. I have the following query, and I need to add to each row a count of how many reports the user has: SELECT * FROM users LIMIT 1, 10 Do I need to use a subquery, and if so, how can I use it efficently? The reports table has thousands and thousands of rows.

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• how can i make a dynamic drop down box in php?

  - by sebastian

  i need in an php file three drop down boxes or multiple select boxes. the entries from these boxes are in a mysql database. the single problem is that the entries in the thrid box depend on the second, and the entries in the second depend on the first. can someone help? know any examples?

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• Delphi plugin for pasting text constants in source code?

  - by mjn

  Inserting (pasting from clipboard) of text constants in the Delphi code editor requires some manual "postprocessing" ... split up long text into multiple lines (and insert the string concatenation symbol) escape quotes (replace single quotes with double quotes) enclose the string with quotes keep original white space (leadinng blanks, line feeds) Is there a IDE plugin available which helps to reduce these manual steps?

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