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  • [C++] Is it possible to use threads to speed up file reading ?

    - by Mister Mystère
    Hi there, I want to read a file as fast as possible (40k lines) [Edit : the rest is obsolete]. Edit: Andres Jaan Tack suggested a solution based on one thread per file, and I want to be sure I got this (thus this is the fastest way) : One thread per entry file reads it whole and stocks its content in a container associated (- as many containers as there are entry files) One thread calculates the linear combination of every cell read by the input threads, and stocks the results in the exit container (associated to the output file). One thread writes by block (every 4kB of data, so about 10 lines) the content of the output container. Should I deduce that I must not use m-mapped files (because the program's on standby waiting for the data) ? Thanks aforehand. Sincerely, Mister mystère.

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  • Is it possible to impersonate another WAP by intercepting communication with other client?

    - by OSX NINJA
    There is a well known WAP that lots of people use. Someone comes in with a laptop equipped with a sniffer. The laptop sniffs people trying to log on to the WAP. It intercepts the connection, and when people try to log on to the WAP, they unknowingly log on through that person's laptop instead. All communication between the WAP and people's laptops go through that person's laptop. That person's laptop is able to block access to certain websites that the WAP would normally allow.

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  • Is it possible to replace the Logitech G500 wire without rebuying the mouse?

    - by leladax
    It has to be replaced ideally in whole, from the point it starts inside the mouse (with a white 4-5 piece of wires connection) to the end (of the USB connector to the computer) or at least to a considerable length because there is fatigue very near the mouse and the more I fix it there with soldering the closer it gets to being unfixable or reaching towards 'inside' the mouse where fixing it will be hard or impossible. So I wonder if there is a way to get a replacement of the whole thing or at least the inside-the-mouse connector to a certain length. Also I wonder if other mice types are identical in the connector of the inside.

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  • Is it possible to use a dual processor computer as your desktop?

    - by Ivo Flipse
    I've seen some people suggesting to get a motherboard that supports two processors and stick two Xeon Nehalem processors in it. Could you use this system as a desktop PC or is this useless or even impossible? It's more hypothetical question if Windows 7 would support such a set-up. I know you could just take an i7, but wouldn't two of those processors be a whole lot more awesome? Like the previous generation Skulltrails? The idea would be to have a motherboard like this ASUS Z8NA-D6C Dual LGA 1366 Intel 5500 ATX and two Xeons (since I don't think i7's could be used) Intel Xeon E5405 Harpertown to run something like Windows 7 Ultimate.

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  • Is it possible to dump the names of all the open files in notepad++ to a file?

    - by mark
    So, I dragged and dropped multiple files onto notepad++. The files came from different directories and were selected using different criteria. So, I have many files open in Notepad++. Now I need to have a list of all the open files in another file. Right now, my only option is to script the decisions used to guide me in selecting the files in the first place. Which is probably the best in the long term, but I wonder if there is a quicky one in Notepad++. Some plugin magic or whatever. Suggesting another free editor which has this function is a good option too (not that I am going to ditch notepad++, God forbid)

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  • Is it possible to set a parameterized build or pass an environment variable via a hudson build trigger?

    - by Tim
    I'd like to use hudson to trigger a "promotion" of a build. The build would be a simple script that just copies a release candidate installer file from one location to another. (development dir to release/stable dir) Our build server is not on the public internet, but I want to be able to send an email or a text message or an IM with the build number to hudson, which will parse the build number and then do the copy/move. In looking at the jabber/IM plugin it does not look like this is possible (the parameter part) Has anyone solved this in some way? Should I use some other mechanism? I would prefer not to have to do the manual steps each time (SCP/FTP, etc) - I just want any QA team member to be able to trigger the build server to do the promotion.

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  • Is it possible to have tab completion of drop-down lists in web pages in Firefox?

    - by Nick Booker
    Does anyone know of a Firefox plugin that would enable tab-completion (or some other key sequence like Alt-L) of items in drop-down lists in web forms? e.g. ou<TAB>in<TAB>s<TAB> for 'OurCompany - Internal Support' Vimperator's hints mode makes it very ergonomic to focus the drop-down list with a key sequence like f13 but the keyboard interface to the drop-down list still sucks. I very frequently have to pick items from a very long list with very long common prefixes among the entries (e.g. 30-40 starting with OurCompany -), which renders both the built-in keyboard interface and the mouse pretty slow and unergonomic. I basically want readline support for filling webforms!

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  • Possible to redirect from HTTPS to HTTP behind load-balancer?

    - by Derek Hunziker
    I have a basic ASP.NET application that sits behind an F5 load-balancer. Incoming SSL requests (over HTTPS) terminate at the load-balancer and all internal communication between the load-balancer and my application servers is unsecure (over HTTP). When a unsecure request comes in, my app is able to use Response.Redirect("https://...") to redirect a secure URL with no problems. However, the other direction appears to be impossible - I cannot redirect from HTTPS to HTTP using Response.Redirect() from my application. The URL remains HTTPS for the client and does not change. Could the F5 be preventing the redirect for ever reaching the client? Is there any special configuration necessary to let this happen?

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  • How is it possible for SSD's drives to have such a good latency?

    - by tigrou
    First time i read some information about SSD's, i was surprised to learn they internally use NAND flash chips. This kind of memory is generally slow (low bandwidth) and have high latency while SSD's are just the opposite. But here is how it works : SSD drives increase their bandwidth by using several NAND flash chips in parallel. In other words, they do some data striping (aka RAID0) across several chips (done by the controller). What i don't understand is how SSD's drives have such a low latency, whereas they are using NAND chips? (or at least lot better than what a typical single NAND chip would do) EDIT: I think under-estimate NAND chip capabilities. USB drives, while powered by NAND's are mostly limited by USB protocol (which have a pretty high latency) and the USB controller. That explain their poor performance in some cases.

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  • Is it possible to set up rule in Outlook 2010 based on message class?

    - by BFDatabaseAdmin
    I recieve all the undeliverable reports for mailings sent from my company. Moving and cataloguing them can take a while, and it would be handy if I could create a rule that did that for me. The most robust way of doing this would seem to be to run a rule based on the Undeliverable message class. However, I can't see message class as an option anywhere in the advanced rules wizard, and Googling it is no help. EDIT: I already have a rule that searches for "Undeliverable" in the subject header of emails received and moves them, but this only affects traditional emails (i.e. those with a message class of "Message") and ignores actual undeliverable reports. Am I missing something obvious, or can this not be done?

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  • Is it possible to really delete a Facebook chat message or the whole chat?

    - by Forza
    Ok, so a few months ago me and a friend send a whole bunch of smileys to each other in Facebook chat just for fun. I wish I had known at that time how stupid that was. Even until today, every time I open the chat with that contact, the Facebook tab totally locks up when I try to load that chat. It will load eventually after five minutes or so, but it becomes very inconvenient at times. On Facebook Messenger for Android, there's no problem and the chat works fine. I'd like to know if there's any way to completely delete a Facebook chat (not archive them) and start over so it won't load the smileys anymore.

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  • Is it possible to cast the Elapsed Time function to Integer?

    - by nuvio
    I have the following function: (def elapsedtime (with-out-str (time (run-my-function)))) and I was wondering if is possible to store only the integer value of the time, as I can only store a String at the moment.... Any suggestion? Thanks a lot UPDATE So I did use this: (defmacro nsecs [expr] `(let [start# (. System (nanoTime))] ~expr (- (. System (nanoTime)) start#))) And then modified this: (def elapsedtime (nsecs (run-my-function argument1 argument2))) but doesn't work, what am I doing wrong? "Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Wrong number of args (1) passed to: main$fn--105$nsecs"

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  • Is it possible to use software raid in Windows 7 on the boot partition?

    - by DoctaJonez
    I want to use RAID 1 on my workstation configuration at work, and I've been looking at using the build in mirror functionality in Windows 7. When you click on the add mirror option it presents you with the following warning. I've done some Google searching and the consensus seems to be that you cannot boot from a dynamic volume, but some forum posts seem to indicate that people have tried this with success (e.g. here). With Google searches producing contradictory information I thought I'd ask you guys for an authoritative answer. Can I use the inbuilt Windows 7 mirroring for my boot partition? Or as I suspect, will it make it unbootable due to it being converted to a dynamic disk?

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  • Is it possible to view Facebook news feeds page by page rather than loading it all as I scroll?

    - by oscilatingcretin
    If you want to scroll through your Facebook news feed (be it on the main feed, your personal feed, or in groups) to older parts, you have to scroll to the bottom, wait for the ajax load of the next part of the feed, and repeat. The problem with this is that, if you're scrolling down very far, the HTML document just gets bigger and bigger until your browser starts to die due to the overload of resources brought on by added HTML, text, and even images. This pretty much sets a limit to how far back you can scroll. Clicking on months and years on your personal feed has the same effect of cumulatively adding feed segments to the HTML document. I notice that this month/year feature is not available on the main feed and for groups. If there were a way to literally page through the feed so that only a single page's worth of feed data is loaded at a time, that would make scrolling through it much more doable.

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  • Is it possible to cause artificial network packet loss or latency?

    - by nbolton
    I'm trying to reproduce some issues on a deployed application where the MSSQL server and client are running in two separate machines. I think there may be network issues between the two machines, so I'd like to try and reproduce these conditions on two Hyper-V virtual machines (on the same virtual server). Of course, the network for these virtual machines is "local" so it's actually far from the conditions in a live environment. Is there a program I can run on either virtual machine which will degrade the network performance? Or maybe any other work arounds? For example, one way to reproduce the conditions may be to run the VMs on separate Hyper-V servers in geographically dispersed locations (so the SQL traffic goes over VPN or something) -- but this is a little long winded I think. There must be a simpler way.

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  • Is it possible to create a simple frontend indexer for openbittorent torrents?

    - by SimonK
    I run a website which distributes a few files every now and again, live music performances by a rock band. I create a torrent file, set the trackers as openbittorrent, publicbt and other similar open trackers. I upload the torrent file to my forum, my users download it and the files are shared. No problems there. What I would like to do is index those torrents properly on my website though so I can follow seeders/leechers and other stats online. I know the open torrent trackers don't have an index but I am aware of many, many indexing sites that do that exact thing. I don't know how though. So what I'm asking is what do I need to do to do that myself? I simply want to create a page that lists the torrents I and other users on my site create, the seeders/leechers ratio and a link to the torrent file etc. What data do I need to be able to do that? I'm proficient in general web design but I don't know what I would need data wise to pull the required info on the torrents? Thanks

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  • Is it possible to come over the time out issue for a function call in C#?

    - by infant programmer
    In my program I call a method xslTransform.Load(strXmlQueryTransformPath, xslSettings, new XmlUrlResolver()); The problem I am facing is: sometimes this function doesn't execute well within the time. Sometimes compiler raises the time out issue after a long time of trial.. which inturn causes this part of application to shut. That is what I want to avoid. So if it exceeds certain time say 10 seconds I need to recall the method. Is it possible to add some code lines adjacent to this, which can meet the requirement?

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  • Is it possible to run a compiled program with Xcode on Mac OS X in FreeBSD? (Objective-C/Cocoa)

    - by Eonil
    Hi. I have a plan to build a web-site which running CGI made with Cocoa. My final goal is develop on Mac OS X, and run on FreeBSD. Is this possible? As I know, there is a free implementation of some NextStep classes, the GNUStep. The web-site is almost built with only strings. I read GNUStep documents, classes are enough. DB connection will be made with C interfaces. Most biggest problem which I'm concerning is linking and binary compatibility. I'm currently configuring FreeBSD on VirtualBox, but I wanna know any possibility informations about this from experts. This is not a production server. Just a trial. Please feel free to saying anything.

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  • What are the possible problems, when wget returns code 500 but same request works in normal browsers?

    - by markus
    What should I be looking for, when wget returns 500 but the same URL works fine in my web browser? I don't see any access_log entries that seem to be related to the error. DEBUG output created by Wget 1.14 on linux-gnu. <SSL negotiation info stripped out> ---request begin--- GET /survey/de/tools/clear-caches/password/<some-token> HTTP/1.1 User-Agent: Wget/1.14 (linux-gnu) Accept: */* Host: testing.thesurveylab.net Connection: Keep-Alive ---request end--- HTTP request sent, awaiting response... ---response begin--- HTTP/1.0 500 Internal Server Error Date: Wed, 12 Dec 2012 14:53:07 GMT Server: Apache/2.2.3 (CentOS) Set-Cookie: blueprint2-staging=8jnbmkqapl30hjkgo0u6956pd1; path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Strict-Transport-Security: max-age=8640000;includeSubdomains X-UA-Compatible: IE=Edge,chrome=1 Content-Length: 5 Connection: close Content-Type: text/html; charset=UTF-8 ---response end--- 500 Internal Server Error Stored cookie testing.thesurveylab.net -1 (ANY) / <session> <insecure> [expiry none] blueprint2-staging 8jnbmkqapl30hjkgo0u6956pd1 Closed 3/SSL 0x0000000001f33430 2012-12-12 15:53:07 ERROR 500: Internal Server Error.

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  • Is it possible to mod_rewrite BASED on the existence of a file/directory and uniqueID? [closed]

    - by JM4
    My site currently forces all non www. pages to use www. Ultimately, I am able to handle all unique subdomains and parse correctly but I am trying to achieve the following: (ideally with mod_rewrite): when a consumer visits www.site.com/john4, the server processes that request as: www.site.com?Agent=john4 Our requirements are: The URL should continue to show www.site.com/john4 even though it was redirected to www.site.com?index.php?Agent=john4 If a file (of any extension OR a directory) exists with the name, the entire process stops an it tries to pull that file instead: for example: www.site.com/file would pull up (www.site.com/file.php if file.php existed on the server. www.site.com/pages would go to www.site.com/pages/index.php if the pages directory exists). Thank you ahead of time. I am completely at a crapshot right now.

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  • Is it possible to position an element relative to the border-box of its parent?

    - by Timwi
    Consider the following jsfiddle for reference: http://jsfiddle.net/apmmw2ma/ As you can see, the “inner” box (with the red border) is positioned relative to the outer’s padding-box: left:0 positions it just to the right of outer’s border, and top:100% appears to mean “100% of the content plus padding, but not the border”. Unfortunately, adding box-sizing: border-box to the outer div seems to have no effect. I want to position a child element directly below its parent’s border-box, i.e. the two borders should abut no matter how thick they are. Is this possible?

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