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• Download and Open Compressed SQLite3 Database on Heroku

  - by Kevin Sylvestre

  I have a script file for parsing through a SQLite database. I now need to create a CRON job that will download and unzip said database from a third-party (already hosting as SQLITE). I understand this can be done using WGET and UNZIP, but given Heroku's read only file system, is this possible entirely in memory? Thanks.

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• What is null exactly in java?

  - by Brodie

  is it a special value? or is it a special memory address? what is it exactly?

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• modify the assembly on runtime?

  - by joe doe

  how can i modify memory loaded methods in given assembly so that clr when instantiates new objects for some class it makes new objects with modified code in it?

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• C - How to implement Set data structure?

  - by psihodelia

  Is there any tricky way to implement a set data structure (a collection of unique values) in C? All elements in a set will be of the same type and there is a huge RAM memory. As I know, for integers it can be done really fast'N'easy using value-indexed arrays. But I'd like to have a very general Set data type. And it would be nice if a set could include itself.

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• Does ASP.NET Make Request Scheduling Decisions Based Upon SessionID?

  - by Mike Murphy

  I know that a properly implemented SessionStateStoreProvider maintains an exclusive lock on session data for the duration of a request. However, considering that multiple requests could arrive simultaneously (e.g. via IFRAMEs) all but one would be able to make forward progress. All the other requests would block for a bit and reduce the number of worker threads available during that time. It seems if ASP.NET "peeked" at the session IDs on the requests early on, it could avoid running requests simultaneously that were on the same session. This would improve throughput under load for pages that didn't want to give up using IFRAMEs. This seems plausible enough that it might be true.

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• String replacement on a whole text file in Python 3.x?

  - by SkippyFire

  How can I replace a string with another string, within a given text file. Do I just loop through readline() and run the replacement while saving out to a new file? Or is there a better way? I'm thinking that I could read the whole thing into memory, but I'm looking for a more elegant solution... Thanks in advance

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• Help decoding MSDN Dynamic Data Article

  - by davemackey

  I'm trying to run through this msdn article: http://msdn.microsoft.com/en-us/library/dd723645.aspx One of the steps is: In the class file for the page, change the base class from UserControl to EntityTemplateUserControl. Nowhere is it made clear what page is being referenced. Can someone help me? I don't see any relevant class in the pages I have, so I assumed maybe they were talking about the ascx and didn't really mean page, but I'm not seeing an option there either.

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• ms access negative page numbers

  - by FrustratedWithFormsDesigner

  I have an access report that generates 36505 pages (un filtered, and about half of each page is taken up by group headers and page headers) , though the footer at the bottom of the report page says "36505 of -29031". This looks like an overflow problem maybe, though I'm confused how it got the current page number of the last page OK, but failed to get total page count. Has anyone dealt with this before?

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• How do I put static data into an SQLite database in Android?

  - by sirconnorstack

  If I have a bunch of data that is never going to change (eg. an English language dictionary or the rgb values of a couple hundred color names), how do I use an SQLite database to store it? I know a database is faster than loading everything into memory when the app starts, but how do I make the database either the first time the app runs or "before" the apps ever runs?

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• Can you explicitly set a structure layout/alignment in C++ as you can in C#?

  - by Gary Willoughby

  In C# you have nice alignment attributes such as this: [StructLayout(LayoutKind.Explicit)] public struct Message { [FieldOffset(0)] public int a; [FieldOffset(4)] public short b; [FieldOffset(6)] public int c; [FieldOffset(22)] //Leave some empty space just for the heck of it. public DateTime dt; } Which gives you fine control on how you need your structure to be layed out in memory. Is there such a thing in standard C++?

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• How do I parse an HTML website using Perl?

  - by Nano HE

  Could you please give me some suggestions on how to parse HTML in Perl? I plan to parse the keywords(including URL links) and save them to a MySQL database. I am using Windows XP. Also, do I first need to download some website pages to the local hard drive with some offline Explorer tool? If I do, could you point me to a good download tool?

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• How can I modify an Android bitmap in C++ (JNI/NDK) so that I can use on the Java side?

  - by HardCoder

  I call a C++ function over JNI and pass a RGBA_8888 bitmap, lock it, change the values, unlock it, return and then display it in Java with this C++ code: AndroidBitmap_getInfo(env, map, &info) < 0); AndroidBitmap_lockPixels(env, map, (void**)&pixel); for(i=info.width*info.height-1;i>=0;i--) { pixel[i] = 0xf1f1f1f1; } AndroidBitmap_unlockPixels(env, map); The problem I have is that the bitmaps looks not as I expect it and the pixel values (verified with getPixel) are not the same when I check them in Java from what I set them in C++. When I set the bitmap values to 0xffffffff I get the correct value in Java, but for many others I don't. 0xf1f1f1f1 for example turns into 0xF1FFFFFF. What do I have to do to make it work ? PS: I am using Android 2.3.4

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• Assembly GDB Print String

  - by Ken

  So in assembly I declare the following String: Sample db "This is a sample string",0 In GDB I type "p Sample" (without quotes) and it spits out 0x73696854. I want the actual String to print out. So I tried "printf "%s", Sample" (again, without quotes) and it spits out "Cannot access memory at address 0x73696854." Short version: How do I print a string in GDB?

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• SQL Server insert slow

  - by andrew007

  Hi, I have two servers where I installed SQL Server 2008 Production: RAID 1 on SCSI disks Test: IDE disk When I try to execute a script with about 35.000 inserts, on the test server I need 30 sec and instead on the production server more than 2 min! Does anybody know why such difference? I mean, the DB is configured in the same way and the production server has also a RAID config, a better processor and memory... THANKS!

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• Checklist for writing copy constuctor and assignment operator in C++

  - by abababa22

  Please write a list of tasks that a copy constructor and assignment operator need to do in C++ to keep exception safety, avoid memory leaks etc.

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• SQL Server 2008 - Query takes forever to finish even though work is actually done

  - by Brian

  Running the following simple query in SSMS: UPDATE tblEntityAddress SET strPostCode= REPLACE(strPostCode,' ','') The update to the data (at least in memory) is complete in under a minute. I verified this by performing another query with transaction isolation level read uncommitted. The update query, however, continues to run for another 30 minutes. What is the issue here? Is this caused by a delay to write to disk? TIA

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• Does python have a session variable concept???

  - by gizgok

  I have a datetime.date variable in python.I need to pass it to a function do operations according to the date given and then increment the date for the next set of operations.The problem is I have to do the operations in diff pages and hence I need the date as a variable which can go from page to page. Can we do this in python.......

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• How to use JavaScript to measure how bright a users monitor is ?

  - by HankV

  I've noticed that the brightness of computer monitors drastically varies between computers. As such, this changes the look of web pages greatly. Is there a way to use JavaScript to automatically detect how bright (or dark) a users monitor is so that I can adjust my web page colors accordingly? UPDATE Please note that I do not want manual user involvement. I want this detection to be automatic so that users don't realize I dynamically change the color palette automatically based on the brightness/darkness of their monitor.

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• UIWebView: How do I control page display with a PDF?

  - by Dotnaught

  I have a PDF loaded in an iPhone app using UIWebView and it displays page numbers when the pages are scrolled manually. But I've had no luck figuring out how to access those numbers and set the page displayed. Any suggestions would be welcomed. Thanks.

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• Change GWT application behavior between deployed and debug envionment

  - by Michael Donohue

  I would like to have my GWT application use different constants when debugging or developing vs when deployed. What is the right way to do this? My web searches turn up a lot of pages about debugging GWT applications, which isn't what I'm looking for.

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• in wordpress, how do I know what page is current?

  - by vick

  in wordpress, how do I know what page is current? I have 5 pages that are my header menu bar, I want to CSS the current (open page) so user knows whats page they are on. Is there a way of doing this? thanks

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• Allowed characters in linux environment variable names

  - by Christian Semrau

  What characters are allowed in linux environment variable names? My cursory search of man pages and the web did only produce information about how to work with variables, but not which names are allowed. I have a Java program that requires an defined environment variable containing a dot, like com.example.fancyproperty. With Windows I can set that variable, but I had no luck setting it in linux (tried in SuSE and Ubuntu). Is that variable name even allowed?

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• How to synchronize static method in java.

  - by Summer_More_More_Tea

  Hi there: I come up with this question when implementing singleton pattern in Java. Even though the example listed blow is not my real code, yet very similar to the original one. public class ConnectionFactory{ private static ConnectionFactory instance; public static synchronized ConnectionFactory getInstance(){ if( instance == null ){ instance = new ConnectionFactory(); } return instance; } private ConnectionFactory(){ // private constructor implementation } } Because I'm not quite sure about the behavior of a static synchronized method, I get some suggestion from google -- do not have (or as less as possible) multiple static synchronized methods in the same class. I guess when implementing static synchronized method, a lock belongs to Class object is used so that multiple static synchronized methods may degrade performance of the system. Am I right? or JVM use other mechanism to implement static synchronized method? What's the best practice if I have to implement multiple static synchronized methods in a class? Thank you all! Kind regards!

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• need a library to get performance counters data under Win CE, c++ code

  - by Oleg Ivanov

  Under WindowsCE, C++ project, I'd like to get CPU utilization and memory allocation data real time - for logging and troubleshooting. Is there a library or activeX available that i could include in my code and use [without bringing my process to a halt, preferably], anyone knows? thanks much for any insight! O.

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• Jaxb to generate the XML directly to the OutputStream

  - by sonu

  Hi, I have a 500Mb csv file. I need to convert it into XML file. I am using the Jaxb to created the xml file. It is working fine for small amout of data. but for large amout of data like 300 mb it is throwing out of memory exception. Can anyone tell me that How can I create each element and write it into a file without creating the whole tree using the jaxb?" Thanks Sonu

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