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• What is the fastest way to send 100,000 HTTP requests in Python?

  - by Igor G.

  Hello, I am opening a file which has 100,000 url's. I need to send an http request to each url and print the status code. I am using Python 2.6, and so far looked at the many confusing ways Python implements threading/concurrency. I have even looked at the python concurrence library, but cannot figure out how to write this program correctly. Has anyone come across a similar problem? I guess generally I need to know how to perform thousands of tasks in Python as fast as possible - I suppose that means 'concurrently'. Thank you, Igor

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• How to prevent Excel from wanting to start in Safe Mode?

  - by paulland

  We have a background process that calls Excel for generation of report spreadsheets. Occasionally, a crash or inadvertent server reboot will occur while Excel is running. The first launch of Excel after the restart brings up the dialog box (paraphrasing here) "Would you like to start Excel in safe mode?" (Yes/No) The issue is that our background app can't handle this dialog box, and acts as if Excel will not start properly, and the background jobs fail as a result. I can find CL switches for starting Excel in safe mode, but I can't find anything that will instruct Excel to always start in normal mode without that prompt dialog. (I don't have access to the other program's code, so I can't make it pass through a "Yes" value if it runs into that box.) Is there a registry hack or some other way I can force Excel into normal mode every time it's called?

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• Regarding to get refrence of IDot11AdHocManager Interface of COM WiFi AdHoc manager Interface

  - by sathaliyawala

  I am Trying to create AdHoc connection and for this i am using AdHoc wifi Interface provided by Microsoft. I have written code :- IDot11AdHocManager *pIAdHocMng = NULL ; HRESULT hr = CoInitialize(NULL); hr = CoCreateInstance(CLSID_Dot11AdHocManager,NULL,CLSCTX_INPROC_HANDLER ,IID_IDot11AdHocManager ,(void**)pIAdHocMng); if(hr == S_OK) printf("CreateNetwork Method success due to following reason :\n %ld",hr) ; else printf("CreateNetwork Method fail due to following reason : %ld \n ",hr) ; getch(); CoUninitialize(); But it will not return reference of Dot11AdHocManager it will return error and NULL value please help me to get the reference of Dot11AdHocManager Interface so i can use it method which help me to create the AdHoc Network

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• A report writer for non-programmers?

  - by Earlz

  Hello, we are wanting for users to be able to write their own reports in our application. It is a web application. We don't care if they must download an application in order to create reports, but we need for them to be able to print off reports from the web in PDF format or similar. The report writer is to be used by non-programmers, or at best very light programmers(like the ones that make VBA macros and such). (the writer is not a core part of the program though. So if there is a learning curve, then that is acceptable to a certain extent) We were looking at Crystal Reports but it seems like it'll cost $7000 which is just way too much for right now(though our system is very flexible so could support it eventually). We are also looking at Fast Reports which seems pretty promising, but I'm not sure the report writer would be easy for non-programmers to grasp. Can someone recommend a good report writer for non programmers that won't break the bank?

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• How to handle an AsyncTask during Screen Rotation?

  - by Janusz

  I read a lot on how to save my instance state or how to deal with my activity getting destroyed during screen rotation. There seem to be a lot of possibilities but I haven't figured out which one works best for retrieving results of an AsyncTask. I have some AsyncTasks that are simply started again and call the isFinishing() method of the activity and if the activity is finishing they wont update anything. The problem is that I have one Task that does a request to a web service that can fail or succeed and restarting the task would result in a financial loss for the user. How would you solve this? What are the advantages or disadvantages of the possible solutions?

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• known memory leaks in 3ds max?

  - by Denise

  I've set up a script in 3ds max to render a bunch of animations into frames. To do this, I open up a file with all of the materials, load an animation (as a bip) onto the figure, then render. We were seeing a problem where eventually the script would fail because it was unable to open the next file-- max had consumed all of the system memory. Closing max, of course, freed the memory, and we were able to continue with the script. I checked out the heapfree variable, hoping to see a memory leak within my script, hoping to see a memory leak within my own (maxscript) code-- but the amount of free space was the same after every animation. Then, it must be 3ds max which is consuming all of that memory. Nothing in max need be saved from animation to animation-- is there some way to get max to free that memory? (I've tried resetMaxFile() and manually deleting all of the objects in the scene). Is there any known sets of operations that cause max to grow out of control?

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• What is your motivation?

  - by vava

  As software developers we all know that motivation matters. Without it we could just stare into the monitor all day long and do nothing. There are some tricks to get yourself motivated like talking to people or doing the fun part of the project, but they do not always work. In the mean time I started to notice that I am most productive when I could see the person who is appreciating my work. The user, who is using the software and enjoying it. Because if there's none, what's the point of writing this code? So I was wondering, what makes you be at your top, is it the users, your fellow coders or maybe the money you get? PS. I know there's quite a few questions about motivation but they all about overcoming current situation. What I want to hear is what makes you come to the office every day, what you enjoy the most in your job, what makes you want to write this code and do it as fast as you possible could.

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• BSD Sockets don't behave in a iPhone 3G environment

  - by Kyle

  I noticed that many times while developing for an iPhone 3G, BSD socket functions will simply fail. I also noticed at the time, the 3G antenna wasn't even ON, nor was there WIFI Access to back up the network call (So it seems ridiculous that it doesn't turn on to support the network request).. This information was verified with an app from Apple in the SDK called Connectivity Test, or something of the sort. Basically if you load Safari or something, then quickly load up the App it would be fine.. Of course that's not ideal. Apparently, to apple, gethostbyname() or something of the sort is by no means a reason to turn on the Antenna. I contacted Apple about this, and they said that the BSD functions do not switch the Antenna on, but calling all of the Objective-C CFNetwork functions do. I want portable code, so is there a way to keep my existing BSD setup? I really dislike coding in Objective-C, so if anyone knows a work around, that would be awesome.

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• c# - wmplib - playing 2 mp3 files but can get them in synic

  - by Ciarán

  I have 2 windowsMediaPlayer objects setup Both objects have the same mp3 song file but when I play them at the same time they are out of sync by a few seconds. The code I call to play them looks like this sound1.controls.play(); sound2.controls.play(); Is it just because one play method is executed before the other and thus one fast then the other. Is their anyway I could sync them? I have tired messing with the rate of one track to match the other, but not getting it prefect. Thanks

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• CacheManager.getCacheFileBaseDir() always returns null

  - by Leon

  Hi, I've been trying to use the CacheManager for caching some http requests but it failed every time with a nullpointer exception. After some digging I believe I found out why: CacheManager.getCacheFileBaseDir() always returns null so when I try to use CacheManager.getCacheFile() or CacheManager.saveCacheFile() they fail. CacheManager.cacheDisabled() returns false :S I hadn 't created a cache partition via the AVD manager so I thought the problem lie there. But after creating a cache partition getCacheFile() still return null: 03-16 00:25:16.321: ERROR/AndroidRuntime(296): Caused by: java.lang.NullPointerException 03-16 00:25:16.321: ERROR/AndroidRuntime(296): at android.webkit.CacheManager.getCacheFile(CacheManager.java:296) What could be the problem? I've got the code posted here: http://pastebin.com/eaJwfXEK But it's a bit messy because I've been trying tons of stuff. Why does CacheManager.getCacheFileBaseDir() return null and not a File object? Thanks in advance! Leon

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• Cross-domain policy issues after redirect in Flash

  - by ggambett

  I'm having trouble with a cross-domain policy. I'm using the AS3 Loader to fetch an image; I'm making it load the policy file, like this : var pLoader : Loader = new Loader(); var pContext : LoaderContext = new LoaderContext(); pContext.checkPolicyFile = true; pLoader.load(new URLRequest(sURL), pContext); This works fine as long as the image is directly accessible; however, when the server sends a redirect, the loader follows it but loses the checkPolicyFile flag, resulting in a SecurityException - that is, it doesn't check the cross-domain policy of the redirected URL. I've found a solution here ( http://www.stevensacks.net/2008/12/23/solution-as3-security-error-2122-with-300-redirects ) but looks fragile (that is, looks like it will fail if there's more than one redirect). What would be the correct way of doing this?

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• FitNesse doesn't call setters in my fixture

  - by Maurits Rijk

  I have copied a trivial example from the FitNesse Two-Minute example: package com.mrijk; import fit.ColumnFixture; public class Foobar extends ColumnFixture { private double numerator; private double denominator; public void setNumerator(double numerator) {this.numerator = numerator;} public void setDenominator(double denominator) {this.denominator = denominator;} public double quotient() {return numerator/denominator;} } However all test fail with: "Could not find field: denominator.", so obviously the setDenominator is not found/used. When I make the the variables numerator and denominator public instead of private, the tests run successfully. I must be overlooking something, but can't see it yet. Anyone?

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• Multithreading/Parallel Processing in PHP

  - by manyxcxi

  I have a PHP script that will generate a report using PHPExcel from data queried from a MySQL DB. Currently, it is linear in processing in that it gets the data back from MySQL, reads in the Excel template, writes the data to the template, then outputs it. I have optimized the code to the point that the data is only iterated over once, and there is very little processing done on the PHP side. The query returns hundreds of lines in less than .001 seconds, so it is running fast enough. After some timing I have found my bottlenecks to be (surprise, surprise) reading the template and writing the output. I would like to do this: Spawn a thread/process to read the template Spawn a thread/process to fetch the data Return back to parent thread - Parent thread will wait until both are complete Proceed on as normal My main questions are is this possible, is it worth it? If yes to both, how would you tackle it? Also, it is PHP 5 on CentOS

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• Mono mkbundle issue

  - by Sean

  Hello, I am trying to bundle mono runtime with a C# a simple (console) program that does nothing, but 'hello world'. Got Cygwin, configured it all, though it fails: $ mkbundle -o x2 x.exe --deps -z OS is: Windows Sources: 1 Auto-dependencies: True embedding: C:\cygwin\home\Sean\x.exe compression ratio: 31.71% embedding: C:\PROGRA~2\MONO-2~1.1\lib\mono\4.0\mscorlib.dll compression ratio: 34.68% Compiling: as -o temp.o temp.s gcc -mno-cygwin -g -o x2 -Wall temp.c `pkg-config --cflags --libs mono-2|dos2unix` -lz temp.o temp.c: In function `main': temp.c:173: warning: implicit declaration of function `g_utf16_to_utf8' temp.c:173: warning: assignment makes pointer from integer without a cast temp.c:188: warning: assignment makes pointer from integer without a cast /tmp/ccu8fTcQ.o: In function `main': /home/Sean/temp.c:173: undefined reference to `_g_utf16_to_utf8' /home/Sean/temp.c:188: undefined reference to `_g_utf16_to_utf8' collect2: ld returned 1 exit status [Fail] Tried post with similar problem to mine here, but it didn't work either. My configuration: Windows 7 64bit Mono 2.8.1 Latest Cygwin Not sure what's the story here. Help appreciated.

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• UIView drawRect; class variables out of scope

  - by Toby Wilson

  Short & sweet version of my last question in light of new information. I have a UIVIew with an init and a drawrect method (and another thread and a bunch of other stuff, but I'll keep it short & sweet). All of the class variables that I alloc and init in the -(id)init method are out of scope/nil/0x0 in the drawRect method, and I am unable to access them. For example; In the interface: NSObject* fred; In the implementation: -(id)init { if(self == [super init]) { fred = [[NSObject alloc] init]; } return self; } -(void)drawRect:(CGRect)rect { NSLog(@"Fred is retained %i times",[fred retainCount]); //FAIL NSLog(@"But his variable is actually just pointing at uninitialised 0x0, so you're not reading this in the debugger because the application has crashed before it got here." } Should add that init IS being called before drawRect also. Anyone have any ideas?

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• Using URL Routing for Web Forms with .ashx files

  - by RandomBen

  I am developing a .NET 3.5 Web Forms based website that uses URL Routing. So far I have created a few routes and I have had no issue. I now have a .ashx file that is going to handle sending .pdf files from a table in SQL Server to the website when someone clicks on a link. Normally when I create a Handler it would look like this: return BuildManager.CreateInstanceFromVirtualPath("~/ViewItem.aspx", typeof(Page)) as Page; For my .ashx file I tried: return BuildManager.CreateInstanceFromVirtualPath("~/FileServer.ashx", typeof(Page)) as Page; This doesn't work though because fileserver.ashx is not a page so casting it as typeof(Page)) as Page is going to fail. What do I cast the VirtualPath as instead of Page or is there some other way I should be doing this.

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• Behaviour of insertion trigger when defining autoincrement in Oracle

  - by Genba

  I have been looking for a way to define an autoincrement data type in Oracle and have found these questions on Stack Overflow: Autoincrement in Oracle Autoincrement Primary key in Oracle database The way to use autoincrement types consists in defining a sequence and a trigger to make insertion transparent, where the insertion trigger looks so: create trigger mytable_trg before insert on mytable for each row when (new.id is null) begin select myseq.nextval into :new.id from dual; end; I have some doubts about the behaviour of this trigger: What does this trigger do when the supplied value of "id" is different from NULL? What does the colon before "new" mean? I want the trigger to insert the new row with the next value of the sequence as ID whatever the supplied value of "new.id" is. I imagine that the WHEN statement makes the trigger to only insert the new row if the supplied ID is NULL (and it will not insert, or will fail, otherwise). Could I just remove the WHEN statement in order for the trigger to always insert using the next value of the sequence?

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• Fastest distance lookup given latitude/longitude?

  - by Ryan Detzel

  I currently have just under a million locations in a mysql database all with longitude and latitude information. With this I use another lat/lng to find the distance of certain places in the database but it's not as fast as I want it to be especially with 100+ hits a second. Is there a faster formula or possibly a faster system other than mysql for this? The formula I'm using is this. select name, ( 3959 * acos( cos( radians(42.290763) ) * cos( radians( locations.lat ) ) * cos( radians( locations.lng ) - radians(-71.35368) ) + sin( radians(42.290763) ) * sin( radians( locations.lat ) ) ) ) AS distance from locations where active = 1 HAVING distance < 10 ORDER BY distance;

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• How to round CGFloat

  - by Johannes Jensen

  I made this method + (CGFloat) round: (CGFloat)f { int a = f; CGFloat b = a; return b; } It works as expected but it only rounds down. And if it's a negative number it still rounds down. This was just a quick method I made, it isn't very important that it rounds correctly, I just made it to round the camera's x and y values for my game. Is this method okay? Is it fast? Or is there a better solution?

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• App.config for SpecFlow not recognized

  - by INTPnerd

  How do I get my App.config file to be recognized/used? I have tried placing it in the top folder of my project and in the same folder as my feature files. Here are the contents of my App.config file: <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="specFlow" type="TechTalk.SpecFlow.Configuration.ConfigurationSectionHandler, TechTalk.SpecFlow"/> </configSections> <specFlow> <runtime detectAmbiguousMatches="true" stopAtFirstError="false" missingOrPendingStepsOutcome="Error" /> </specFlow> </configuration> Specifically I am trying to tell NUnit to have a fail result when there is a missing or pending step which is why I am specifying "Error" for this.

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• Ending a Rails 2 URL with an IP address causes routing error?

  - by Dave Williams

  I'm trying to construct URLs in the format http://servername/find/by/CRITERION/VALUE CRITERION is a finite set of strings, as is VALUE. Trouble is, VALUE needs to be an IP address in some situations, and it's causing me a routing error. Here's my route: map.find 'find/by/:criterion/:query', :controller => "find", :action => "by" And the error, from the Mongrel logs: Processing ApplicationController#index (for 127.0.0.1 at 2010-05-07 10:20:32) [GET] ActionController::RoutingError (No route matches "/find/by/ip/1.2.3.4" with {:method=>:get}): Rendering rescues/layout (not_found) If I visit /find/by/foo/bar or /find/by/foo/1234 I don't have problems. I suspect the problem might be Rails' inference of MIME types based on periods in the URL, but I don't really know how I can disable that. I've tried passing a :defaults = {:format = :html} to the route but that causes Mongrel to fail to start entirely. Any help appreciated!

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• Incompatibilities between Indy 9 and Windows Server 2003?

  - by mcmar

  I'm having a problem with a Delphi application on some Windows 2003 servers. It uses a webservice call to connect with another server and transmit data back and forth. As soon as the app gets to the Authenticate method, the app dies. The app has worked for years on previous boxes with Win Server 2003, but it doesn't on freshly built machines. The machines are set up the same way for the most part, but there is clearly some config setting that differs that I'm not able to track down. Also, while the error becomes apparent in the call to Authenticate, packet sniffing proves that nothing ever happens between the app and the server it's trying to contact, which strengthens my thoughts that something is dieing early on in setting up the connection. I can't duplicate the error locally, so I can't step through the app in a debugger either. Any thoughts on why an Indy 9 Delphi web connection might silently fail?

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• Why do I need an IoC container as opposed to straightforward DI code?

  - by Vadim

  I've been using Dependency Injection (DI) for awhile, injecting either in a constructor, property, or method. I've never felt a need to use an Inversion of Control (IoC) container. However, the more I read, the more pressure I feel from the community to use an IoC container. I played with .NET containers like StructureMap, NInject, Unity, and Funq. I still fail to see how an IoC container is going to benefit / improve my code. I'm also afraid to start using a container at work because many of my co-workers will see code which they don't understand. Many of them may be reluctant to learn new technology. Please, convince me that I need to use an IoC container. I'm going to use these arguments when I talk to my fellow developers at work.

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• How safe am I singing into Google Spreadsheets with yeroon.net/ggplot2

  - by Farrel

  I am impressed by what I have seen of yeroon.net/ggplot2 which is a web interface for Hadley Wickham's R package ggplot2. I want to try it out on my own data. The part that has me very excited is that one can use data stored in one's own Google spreadsheet as the data. One just signs into their Google Account so that yeroon.net/ggplot2 can access the spreadsheet list. I have been hesitant to do it. If I sign in whilst on yeroon.net am I handing over my username and password to a third party? It would not be wise of me to divulge my google password to third parties since Google is fast becoming my repository of everything. How do I know if Jeroon's application is using ClientLogin or OAuth? My understanding is very basic and may be wrong but nevertheless here it is. OAuth would be better since it does not actually pass the password onto the third party application.

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• fire and forget compared to http request

  - by cometta

  Hi, i looking for opinion from you all. I have a web application that need to records data into another web application database. I not prefer to use http request GET on 2nd application because of latency issue. I looking for fast way to save records on 2nd application quickly, i came across the idea of "fire and forget" , will JMX suit for this scenario? from my understanding jmx will gurantee message delivery. Let say i need to call at least 1000 random requests per seconds to 2nd application should i use jmx? http request? or xmpp instead?

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