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• Custom SQL Server driver

  - by hoodoos

  I had a crazy thought about writing my own SQL Server driver to make it work something like non-blocking http client, so it won't be thread thirsty and could handle lots of db queries within one thread. I tried to look over google for some guidelines about implementing SQL Server client protocol, but found none really, where do those guys get information about it when they write own implementations for PHP or python? I need a really low level to be documented so I can implement all phases of working with a connection through sockets. And would be really nice to have a an example in c# language. :)

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• How does one programmatically create a topic w/ hornet q ?

  - by mP

  I have been looking at the org.hornetq.core.server package which seems to have the most interesting low level APIS relating to managing the server. The server session has a few methods labelled something Queue but none include Topic ... ServerSession void createQueue(SimpleString address, SimpleString name, SimpleString filterString, boolean temporary, boolean durable) throws Exception; void deleteQueue(SimpleString name) throws Exception interface QueueFactory Queue createQueue(long persistenceID, final SimpleString address, SimpleString name, Filter filter, boolean durable, boolean temporary); However i could not figure out how to create a topic. Am i missing something is a JMS topic implemented as a queue ?

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• Best Asp.net Hosting

  - by dotnetguts

  There are many asp.net web hosting companies which spends lot on advertisement and also gives you very cheaper rate, as low as $5, but when it comes to support they are simply hopeless. Everyone can you please pass your experience with your past hosting companies and suggest any good asp.net hosting company? Please consider following requirement factors Asp.net 3.5 or 4.0 supported. Url Rewriter support GZip support (Dynamic through code) Initial Setup support (If required) SQL Server 2005 or 2008 Allow to access SQL Server DB using SQL Mgmt Studio Environment supporting Backup and Restore of DB on my own, without involving tech support team Full Text Search support FTP support I can able to send atleast 500 Emails daily. 99.9% Up Time (No matter all web hosting say they have 99.9% Up Time, but its not true). Alert Email to be sent when they do any maintenance or during downtime. Hosting Price should be reasonable. Incase you feel i am missing something please add to the list. Can anyone suggest good webhosting company based on above factors?

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• Static source code analysis with LLVM

  - by Phong

  I recently discover the LLVM (low level virtual machine) project, and from what I have heard It can be used to performed static analysis on a source code. I would like to know if it is possible to extract the different function call through function pointer (find the caller function and the callee function) in a program. I could find the kind of information in the website so it would be really helpful if you could tell me if such an library already exist in LLVM or can you point me to the good direction on how to build it myself (existing source code, reference, tutorial, example...). EDIT: With my analysis I actually want to extract caller/callee function call. In the case of a function pointer, I would like to return a set of possible callee. both caller and callee must be define in the source code (this does not include third party function in a library).

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• How to detect default printer properties from browser?

  - by Annan

  Regardless of if this is a good idea or not, is it possible to detect printer attributes from the browser? The idea is that you want to print out a brochure that's selling something. Depending on different things such as if the printer is black&white/colour, high/low resolution, laser/inkjet, printing to a file, etc, you want to print out the page differently. For example you might choose different text colours or fonts, different image sizes, etc. My initial thoughts are: ActiveX, Flash, Java, Silverlight, browser plugins. Kudos if it's possible in javascript. I'm interested in all ways to do this, cross browser or not. Please no reasons about why this shouldn't be done ^_^

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• How to programmatically set a data cell of database in VB.Net?

  - by manuel

  I have a Microsoft Access database file connected to VB.NET. In the database table, I have a 'No.' and a 'Status' column. Then I have a textbox where I can input an integer. I also have a button, which will change the data cell in 'Status' where 'No.' = textbox.Text(), when I click it. Let's say I want the 'Status' cell to be changed to "Low". What codes should I put in the button_Click event handler? Here is the codes I used to retrieve and display the database table. Public Class theForm Dim con As New OleDb.OleDbConnection Dim ds As New DataSet Dim daTitles As OleDb.OleDbDataAdapter Private Sub theForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=|DataDirectory|\db1.mdb" con.Open() daTitles = New OleDb.OleDbDataAdapter("SELECT * FROM Titles", con) daTitles.Fill(ds, "Titles") DataGridView1.DataSource = ds.Tables("Titles") DataGridView1.AutoResizeColumns() End Sub

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• [Cocoa] NSImage transparency

  - by ndg

  I'm trying to set a custom drag icon for use in an NSTableView. Everything seems to work but I've run into a problem due to my inexperience with Quartz. - (NSImage *)dragImageForRowsWithIndexes:(NSIndexSet *)dragRows tableColumns:(NSArray *)tableColumns event:(NSEvent *)dragEvent offset:(NSPointPointer)dragImageOffset { NSImage *dragImage = [NSImage imageNamed:@"icon.png"]; NSString *count = [NSString stringWithFormat:@"%d", [dragRows count]]; [dragImage lockFocus]; [dragImage compositeToPoint:NSZeroPoint fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:0.5]; [count drawAtPoint:NSZeroPoint withAttributes:nil]; [dragImage unlockFocus]; return dragImage; } Essentially what I'm looking to do is render my icon.png file with 50% opacity along with an NSString which shows the number of rows currently being dragged. The issue I'm seeing is that my NSString renders with a low opacity, but not my icon.

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• What's the fastest way to strip and replace a document of high unicode characters using Python?

  - by Rhubarb

  I am looking to replace from a large document all high unicode characters, such as accented Es, left and right quotes, etc., with "normal" counterparts in the low range, such as a regular 'E', and straight quotes. I need to perform this on a very large document rather often. I see an example of this in what I think might be perl here: http://www.designmeme.com/mtplugins/lowdown.txt Is there a fast way of doing this in Python without using s.replace(...).replace(...).replace(...)...? I've tried this on just a few characters to replace and the document stripping became really slow.

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• Bitwise operators versus .NET abstractions for bit manipulation in C# prespective

  - by Leron

  I'm trying to get basic skills in working with bits using C#.NET. I posted an example yesterday with a simple problem that needs bit manipulation which led me to the fact that there are two main approaches - using bitwise operators or using .NET abstractions such as BitArray (Please let me know if there are more build-in tools for working with bits other than BitArray in .NET and how to find more info for them if there are?). I understand that bitwise operators work faster but using BitArray is something much more easier for me, but one thing I really try to avoid is learning bad practices. Even though my personal preferences are for the .NET abstraction(s) I want to know which i actually better to learn and use in a real program. Thinking about it I'm tempted to think that .NET abstractions are not that bad at, after all there must be reason to be there and maybe being a beginner it's more natural to learn the abstraction and later on improve my skills with low level operations, but this is just random thoughts.

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• How might one develop a program like FRAPS?

  - by blood

  I would like to make a program to capture video. What is the best way to capture video? I know C++ and I'm learning assembly. I found in my assembly book that I can get data from the video card. Would that be the best way? I know FRAPS hooks into programs, but I would like my program to take video of the entire screen. I would like something something fast, with low memory usage if possible. A requirement is that the program must be usable on other computers, despite dissimilar hardware.

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• Securing files on IPhone

  - by clearbrian

  Hi Is there a way to decompile the binary from an IPhone app. I jailbroke my IPhone and was surprised to find other app's dbs wide open to be copied. So I exported my most important table and hardcoded it into code. Instead of loading table into array from a db I just generated code to fill the array and kept only the most basic DB info so relationships still work. Took a while but now works fine. I was just wondering am I safe, could someone decompile the binary for the app easily and extract the data. In Java its easy to decompile *.class files though thats bytecode where I presume iphone apps are more low level. I know IPhone sdk 4 can mark files as secure. Anyone know can this be overridden by jailbreaks or is this an unix lock?

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• Webservice and ORM Framework?

  - by Sebastian

  Does anybody know a good web framework that includes an ORM mapper and allows straight forward implementation of web services? I'm looking for a framework written in PHP or C++. I'm looking for the following features (not all of them required, some will do nicely) data definition in one place used by database and web service WSDL generation XML output/JSON output boilerplate code generation So what I would like is a framework that let's me specify the objects, the web service functions on those objects and then generate everything that is required leaving me to fill the business logic (connecting the database to the web service). Anything like that out there? Background information for why I need this: I'm looking into creating a web project: the client is a rich web application that fetches all its data using AJAX. It will be completely custom made using only a low level javascript library. The server back end is supposed to serve static content and javascript (basically the rich web application) and to provide a RESTful web service API (which I would like to implement using aforementioned framework).

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• How to estimate the quality of a web page?

  - by roddik

  Hello, I'm doing a university project, that must gather and combine data on a user provided topic. The problem I've encountered is that Google search results for many terms are polluted with low quality autogenerated pages and if I use them, I can end up with wrong facts. How is it possible to estimate the quality/trustworthiness of a page? You may think "nah, Google engineers are working on the problem for 10 years and he's asking for a solution", but if you think about it, SE must provide up-to-date content and if it marks a good page as a bad one, users will be dissatisfied. I don't have such limitations, so if the algorithm accidentally marks as bad some good pages, that wouldn't be a problem.

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• How to estimate memory need by XPathDocument for a specific xml file

  - by bill seacham

  Is there any way to estimate the memory requirement for creating an XpathDocument instance based on the file size of the xml? XpathDocument xdoc = new XpathDocument(xmlfile); Is there any way to programmatically stop the process of creating the XpathDocument if memory drops to a very low level? Since it loads the entire xml into memory, it would be nice to know ahead of time if the xml is too big. What I have found is that when I create a new XpathDocument with a big xml file, an outofmemory exception is never fired, but that the process slows to a crawl, only 5 Mb of memory remains a available and the Task Manager reports it is not responding. This happened with a 266 Mb xml file when there was 584 Mb of ram. I was able to load a 150 Mb file with no problems in 18. After loading the xml, I want to do xpath queries using an XpathNavigator and an XpathNodeIterator. I am using .net 2.0, xp sp3.

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• Understanding Plesk Watchdog statistics

  - by weotch

  We have Plesk 8.3 installed. I've started using their Watchdog module to track server useage. Our server routinely has trouble with the amount of traffic we have and I think our MySQL queries need to be smarter. Anyway, looking at the stats from Watchdog, it seems like MySQL usage is low compared to so something else making up the "overall" usage. See this: I was hoping someone with a lot of Plesk exeprience could help me understand what I'm seeing here. Can I not trust Watchdog's reports or am I missing something?

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• PowerShell copy fails without warning

  - by boink

  Howdy, am trying to copy a file from IE cache to somewhere else. This works on w7, but not Vista Ultimate. In short: copy-item $f -Destination "$targetDir" -force (I also tried $f.fullname) The full script: $targetDir = "C:\temp" $ieCache=(get-itemproperty "hkcu:\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders").cache $minSize = 5mb Write-Host "minSize:" $minSize Add-Content -Encoding Unicode -Path $targetDir"\log.txt" -Value (get-Date) Set-Location $ieCache #\Low\Content.IE5 for protected mode #\content.ie5 for unprotected $a = Get-Location foreach ($f in (get-childitem -Recurse -Force -Exclude *.dat, *.tmp | where {$_.length -gt $minSize}) ) { Write-Host (get-Date) $f.Name $f.length Add-Content -Encoding Unicode -Path $targetDir"\log.txt" -Value $f.name, $f.length copy-item $f -Destination "$targetDir" -force } End of wisdom. Please help!

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• defining a simple implicit Arbitary

  - by FredOverflow

  I have a type Foo with a constructor that takes an Int. How do I define an implicit Arbitrary for Foo to be used with scalacheck? implicit def arbFoo: Arbitrary[Foo] = ??? I came up with the following solution, but it's a bit too "manual" and low-level for my taste: val fooGen = for (i <- Gen.choose(Int.MinValue, Int.MaxValue)) yield new Foo(i) implicit def arbFoo: Arbitrary[Foo] = Arbitrary(fooGen) Ideally, I would want a higher-order function where I just have to plug in an Int => Foo function. I managed to cut it down to: implicit def arbFoo = Arbitrary(Gen.resultOf((i: Int) => new Foo(i))) But I still feel like there has got to be a slightly simpler way.

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• How to write my own download manager using Objective C for iOS devices

  - by Saurabh

  I am writing a download manager for iPhone using objective C. I am using ASIHTTP framework and its working great. But my problem is I am not able to download from file sharing sites like filesonic, rapidshare, hotfile etc. I want to know how can I get download (actual download) url from these sites, or at least how these sites are hiding this info (and where), so I can get that somehow... Is there any open source library or framework to help me with this? How firefox or other desktop browser get this link? Any help will be much appreciated! Update 1 : I don't want to bypass their advertising and revenue streams. Almost all file sharing companies also provide free downloads with low bandwidth, I only want to use that service. there are many download managers available now for iPhone like - "Downloads Lite". I just want to build a similar functionality.

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• Filtering accelerometer data noise

  - by Faiz

  Hi How do I filter noise of the accelerometer data in Android? I would like to create a high-pass filter for my sample data so that I could eliminate low frequency components and focus on the high frequency components. I have read that Kalman filter might be the best candidate for this, but how do I integrate or use this method in my application which will mostly written in Android Java? or can it be done in the first place? or through Android NDK? Is there by any chance that this can be done in real-time? Any idea will be much appreciated. Thank you!

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• What could cause ASP.NET's executionTimeout to not be enforced running under IIS?

  - by Jay

  I'm trying to troubleshoot a problem, but I'm unable to reproduce it locally under IIS because no matter how low I set executionTimeout, the requests never time out. I've tried setting this via the web.config (, via code (Page.Server.ScriptTimeout = 5;). I'm running with binaries that were compiled in release mode, and debug=false is set in the compilation element. FWIW, under Cassini (the standalone development webserver), everything works as expected, running out of the same directory off of the exact same assemblies/config files. Any ideas on what could be causing this?

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• how to make a program like fraps.

  - by blood

  i want to make a program that will capture video. what if the best way to captrue the video, i know c++ and im learning assembly and i found in my assembly book i can get data from the video card i think? would that be the best way? i know fraps hooks into programs but i want my program to take the full screen? so i want something fast low memory useage if i can and something i can use on other computers with them having the same hardware.

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• Is there simple way to play an rtp video/audio stream in WPF?

  - by Robin

  I need to create a WPF control that will play an rtp stream with the requirement that the latency needs to be as low as possible. I've looked at the following two projects: http://vlcdotnet.codeplex.com/ http://wpfmediakit.codeplex.com/ As far as I know, I can't use VLC because we're shipping a commercial application with a more restrictive license than GPL (i.e. we can't ship our source). Wpf media kit is nice, but I can't seem to find a good/free rtp directshow source filter and I wanted to ask if there is a simpler solution out there that I'm missing before I jump into writing my own. Any ideas?

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• "Mail merge"-like functionality in Dreamweaver, or in any other web editing tool?

  - by Chris Farmer

  I have inherited several related, low-traffic web sites to manage and edit. These sites are implemented with static html, and they've accrued lots of stray tags and other cruft. I want to try to clean these up and migrate them to some common page template framework to simplify design and data changes and improve overall consistency. The pages will change on the timescale of weeks, and since the current web hosting plan does not support any dynamic server technologies, I was hoping to just use Dreamweaver or some other tool to merge my content data with some templating structure. I'd like to do content updates every several days and then run the content back through my templates, resulting in new static html that I can upload to the host. Do any tools support this kind of poor-man's data-driven web application? Are there better ways to approach this problem, aside from moving to a new hosting plan and using ASP.NET or PHP?

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• When using a HiLo ID generation strategy, what types should be used to hold Ids?

  - by UpTheCreek

  I'm asking this from a c#/NHibnernate perspective, but it's generally applicable. The concern is that the HiLo strategy goes though id's pretty quickly, and for example a low record-count table (Such as Users) is sharing from the same set of id's as a high record-count table (Such as comments). So you can potentially get to high numbers quicker that with other strategies. So what do people recommend? Code side: int/uint/long/ulong? DBSide: int/bigint? My feeling is to go with longs and bigingts, but would like a sanity check :)

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• Delete an entity by key without fetching it first in app engine (using JDO)

  - by Peter Recore

  Is there a way to delete an entity without having to fetch it from the datastore first? I am assuming I already have the key or id for the entity. I'm thinking of something like deleteObjectById that would be an analogue to getObjectById on PersistenceManager. The closest I can think of is using Query.deletePersistentAll() (as seen here) and specifying a query that only relies on the key, but I can't tell if that is going to fetch the entity before deleting it. thanks EDIT: I know how to do this using the low level API, as well as in the python API. I was wondering if there was a way to do it within the JDO layer.

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