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  • Using gcc compiler flag in Xcode

    - by tech74
    Hi, Shark has identified a area of code to be improved - Unaligned loop start and recommends adding -falign-loops=16 (gcc compiler flag). I've added this to Other C flags in iphone Xcode both to the dependant project and top level project. However it still does not seem to affect the performance and Shark is still reporting the same problem so it appears it didn't work. Am i doing this correctly?

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  • jQuery: How do you preload sound?

    - by aximili
    I have a website that plays sound when you click a button. This is how I do it function PlaySound(soundfile) { $('#soundContainer').html("<embed src='/uploads/sounds/" + soundfile + "' hidden=true autostart=true loop=false>"); } How do you preload the sound file beforehand? Thank you.

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  • Replace Loops in R function

    - by David Hicks
    Hi, I'm new to R, and I'm having trouble figuring out how to replace the FOR loop in the function below. The function estimates a population mean. Any help at all would be much appreciated. Thank you! myFunc<- function(){ myFRAME <- read.csv(file="2008short.csv",head=TRUE,sep=",") meanTotal <- 0 for(i in 1:100) { mySample <- sample(myFRAME$TaxiIn, 100, replace = TRUE) tempMean <- mean(mySample) meanTotal <- meanTotal + tempMean } cat("Estimated Mean: ", meanTotal/100, "\n") #print result }

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  • Is there a way in PHP to keep a file open and process each line and subsequent lines?

    - by Chris Denman
    I want to write a php script that keeps the apache_log file open and "listen" to the log and deal with each log entry as it happens. I'm thinking that I need to open a file, get the number of lines, then do this again in a loop - and when the size is different, read the new lines and process them. Am I barking up the wrong tree, or is there a silly easy solution that I have missed? Chris

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  • Combining List<>'s in .NET

    - by Maxim Z.
    I have a few List< objects that hold many objects of one specific type. My goal is to combine these List<'s into one List<. Of course, I could just loop through each List's contents and add them into one final List, but is there a more efficient way?

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  • Memory allocation problem C/Cpp Windows critical error

    - by Andrew
    Hi! I have a code that need to be "translated" from C to Cpp, and i cant understand, where's a problem. There is the part, where it crashes (windows critical error send/dontSend): nDim = sizeMax*(sizeMax+1)/2; printf("nDim = %d sizeMax = %d\n",nDim,sizeMax); hamilt = (double*)malloc(nDim*sizeof(double)); printf("End hamilt alloc. %d allocated\n",(nDim*sizeof(double))); transProb = (double*)malloc(sizeMax*sizeMax*sizeof(double)); printf("End transProb alloc. %d allocated\n",(sizeMax*sizeMax*sizeof(double))); eValues = (double*)malloc(sizeMax*sizeof(double)); printf("eValues allocated. %d allocated\n",(sizeMax*sizeof(double))); eVectors = (double**)malloc(sizeMax*sizeof(double*)); printf("eVectors allocated. %d allocated\n",(sizeMax*sizeof(double*))); if(eVectors) for(i=0;i<sizeMax;i++) { eVectors[i] = (double*)malloc(sizeMax*sizeof(double)); printf("eVectors %d-th element allocated. %d allocated\n",i,(sizeMax*sizeof(double))); } eValuesPrev = (double*)malloc(sizeMax*sizeof(double)); printf("eValuesPrev allocated. %d allocated\n",(sizeMax*sizeof(double))); eVectorsPrev = (double**)malloc(sizeMax*sizeof(double*)); printf("eVectorsPrev allocated. %d allocated\n",(sizeMax*sizeof(double*))); if(eVectorsPrev) for(i=0;i<sizeMax;i++) { eVectorsPrev[i] = (double*)malloc(sizeMax*sizeof(double)); printf("eVectorsPrev %d-th element allocated. %d allocated\n",i,(sizeMax*sizeof(double))); } Log: nDim = 2485 sizeMax = 70 End hamilt alloc. 19880 allocated End transProb alloc. 39200 allocated eValues allocated. 560 allocated eVectors allocated. 280 allocated So it crashes at the start of the loop of allocation. If i delete this loop it crashes at the next line of allocation. Does it mean that with the numbers like this i have not enough memory?? Thank you.

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  • Performance of tokenizing CSS in PHP

    - by Boldewyn
    This is a noob question from someone who hasn't written a parser/lexer ever before. I'm writing a tokenizer/parser for CSS in PHP (please don't repeat with 'OMG, why in PHP?'). The syntax is written down by the W3C neatly here (CSS2.1) and here (CSS3, draft). It's a list of 21 possible tokens, that all (but two) cannot be represented as static strings. My current approach is to loop through an array containing the 21 patterns over and over again, do an if (preg_match()) and reduce the source string match by match. In principle this works really good. However, for a 1000 lines CSS string this takes something between 2 and 8 seconds, which is too much for my project. Now I'm banging my head how other parsers tokenize and parse CSS in fractions of seconds. OK, C is always faster than PHP, but nonetheless, are there any obvious D'Oh! s that I fell into? I made some optimizations, like checking for '@', '#' or '"' as the first char of the remaining string and applying only the relevant regexp then, but this hadn't brought any great performance boosts. My code (snippet) so far: $TOKENS = array( 'IDENT' => '...regexp...', 'ATKEYWORD' => '@...regexp...', 'String' => '"...regexp..."|\'...regexp...\'', //... ); $string = '...CSS source string...'; $stream = array(); // we reduce $string token by token while ($string != '') { $string = ltrim($string, " \t\r\n\f"); // unconsumed whitespace at the // start is insignificant but doing a trim reduces exec time by 25% $matches = array(); // loop through all possible tokens foreach ($TOKENS as $t => $p) { // The '&' is used as delimiter, because it isn't used anywhere in // the token regexps if (preg_match('&^'.$p.'&Su', $string, $matches)) { $stream[] = array($t, $matches[0]); $string = substr($string, strlen($matches[0])); // Yay! We found one that matches! continue 2; } } // if we come here, we have a syntax error and handle it somehow } // result: an array $stream consisting of arrays with // 0 => type of token // 1 => token content

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  • staruml "combined fragment" layout

    - by Ryan Fernandes
    Am facing a bit of trouble getting the 'combined fragment' to sit above an activation (in a sequence diagram). On adding a 'combined fragment' (loop/alt/opt etc) to a section of the sequence diagram, the label and the guard condition appear 'under' the activation block and hence is obscured. Any idea how to fix this?

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  • Ruby script as service

    - by mplacona
    Well, the title say it all. I have a ruby script I want running as a service (one I can start and stop) on my Linux box. I was able to find how to do it on Windows here Some readings point to creating daemons or cron tasks. I just need something simple I can call on my box's reboot, and can stop/start whenever I please. my script has an internal sleep call, and runs in "eternal loop" thanks in advance

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  • Running a python script on all the files in a directory.

    - by S1syphus
    I have a Python script that reads through a text csv file and creates a playlist file. However I can only do one at a time, like: python playlist.py foo.csv foolist.txt However, I have a directory of files that need to be made into a playlist, with different names, and sometimes a different number of files. So far I have looked at creating a txt file with a list of all the names of the file in the directory, then loop through each line of that, however I know there must be an easier way to do it.

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  • scala actor message definition

    - by BenZen
    Do i need to define class for message i want to retrieve on a scala actor? i trying to get this up where am i wrong def act() { loop { react { case Meet = foundMeet = true ; goHome case Feromone(qty) if (foundMeet == true) = sender ! Feromone(qty+1); goHome }}}

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  • Parsing Web Service Response in Oracle 9i

    - by zechariahs
    I'm having trouble parsing an XML response from a web service. I have a feeling this is due to a namespace issue. But, after 4 hours of research, trial-and-error, and head-banging I haven't been able to resolve it. Please help. My goal is to get a dbms_xmldom.DOMNodeList that contains "ERRORS" nodes. XML Response: <?xml version="1.0" encoding="ISO-8859-1"?> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <soap:Body> <GetMailDataResponse xmlns="https://www.customnamespacehost.com/webservicename"> <GetMailDataResult> <Errors xmlns=""> <ErrorDetail>Access Credentials Invalid</ErrorDetail> </Errors> </GetMailDataResult> </GetMailDataResponse> </soap:Body> Code: Unfortunately this code compiles but doesn't work. Error: "ORA-31013: Invalid XPATH expression." I believe this is due to the multiple namespaces defined in L_NS variable. I tried setting L_XPATH: "/soap:Envelope/soap:Body" and L_NS: "xmlns:soap="http://schemas.xmlsoap.org/soap/envelope"" but L_NL_RESULTS ends up being null. -- Variable Declarations -- P_XML XMLTYPE; L_CODE_NAME VARCHAR2(1000) := 'PKG_CIS_WS.FNC_STAGE_DATA'; L_XML_DOC dbms_xmldom.DOMDocument; L_NL_RESULTS dbms_xmldom.DOMNodeList; L_NL_DONOR_SCREENING_RESULTS dbms_xmldom.DOMNodeList; L_N_RESULT dbms_xmldom.DOMNode; L_XPATH VARCHAR2(4000); L_NS VARCHAR2(4000); L_TEMP VARCHAR2(4000); -- Code Snippet -- L_XML_DOC := dbms_xmldom.newDOMDocument(P_XML); L_XPATH := '/soap:Envelope/soap:Body/a:GetMailDataResponse/GetMailDataResult'; L_NS := 'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope"' || 'xmlns:a="https://www.customnamespacehost.com/webservicename"'; L_NL_RESULTS := dbms_xslprocessor.selectNodes( dbms_xmldom.makeNode(L_XML_DOC) , L_XPATH , L_NS); if not DBMS_XMLDOM.ISNULL(L_NL_RESULTS) then FOR RESULTS_REC IN 0 .. dbms_xmldom.getLength(L_NL_RESULTS) - 1 LOOP L_N_RESULT := dbms_xmldom.item(L_NL_RESULTS, RESULTS_REC); L_TEMP := dbms_xmldom.GETNODENAME(L_N_RESULT); prc_bjm(L_CODE_NAME, 'L_TEMP = ' || L_TEMP, SQLCODE); dbms_xslprocessor.valueOf(L_N_RESULT, 'Errors/ErrorDetail/text()', L_TEMP); prc_bjm(L_CODE_NAME, 'L_TEMP = ' || L_TEMP, SQLCODE); END LOOP; else prc_bjm(L_CODE_NAME, 'No nodes for: ' || L_XPATH || '(' || L_NS || ')', SQLCODE); end if; -- if not DBMS_XMLDOM.ISNULL(L_NL_RESULTS)

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  • ntop to analyse bandwidth usage on multiple ASA 5505

    - by dunxd
    I have set up a netflow server at our data centre, which is connected via VPN to ~40 remote offices using Cisco ASA 5505. The aim is to analyse usage data and find out exactly how the remote connections are being used. I followed through http://techowto.files.wordpress.com/2008/09/ntop-guide.pdf to set up ntop and https://supportforums.cisco.com/docs/DOC-6114 to set up the ASAs. I can see from the Plugin Netflow Statistics page that netflow packets from my ASAs are being received - the counter is increasing. However, I am not seeing any breakdown on the Global Traffic Statistic page after switching to the Netflow interface. I'm just seeing a pie chart showing 100% traffic for eth0. The interfaces and documentation are a little hard to follow so I am not sure I have got things configured correctly. When setting up my NetFlow-device.2 I can specify Virtual NetFlow Interface Network Address - the web UI says This value is in the form of a network address and mask on the network where the actual NetFlow probe is located. is this a Network address (e.g. 192.168.0.0/24) or an actual host IP address (192.167.0.1/24)? If that should be a network address, is this the network in which one of my ASAs is or the network in which my ntop server is? If a host IP address, is this the IP address used by eth0 on my ntop server, the IP address of an ASA, or something else? Do I need a separate virtual interface for each ASA I am collecting netflow data from? Any guidance would be greatly welcome.

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  • Interactive console based CSV editor

    - by Penguin Nurse
    Although spreadsheet applications for editing CSV files on the console used to be one of the earliest killer applications for personal computers, only few of them and even less documentation about them is still actively maintained. After having done extensive search on the web, manpages and source code, I ended up with the following three applications that all have fundamental drawbacks: sc: abbrev. for spreadsheet calculator; nice tool with vi keybings, but it does not put strings containing the delimiter into quotas when exporting to delimiter separated format and can't import csv files correctly, i.e. all numbers are interpreted as strings GNU oleo: doesn't seem to be actively maintained any longer since 2001 and there are therefore no packages for major linux distributions teapot: offers packages for various operating systems, but uses for example counter-intuitive naming for cells (numbers for row and column, i.e. 11 seems to be intended to be row 1, column 1) and superfluous code for FLTK GUI Various Emacs modes also do not quote strings containing the delimiter well or are require much more typing for entering the scaffold of a table. Therefore I would be very grateful for overcoming one of theses drawbacks or any hints towards another console based CSV editor. It actually needn't do any calculations just editing cells or column- and rowise.

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  • Get Class List for Element with JQuery

    - by Buggabill
    Is there a way in JQuery to loop through or assign to an array all of the classes that are assigned to an element? ex. <div class="Lorem ipsum dolor_spec sit amet">Hello World!</div> I will be looking for a "special" class as in "dolor_spec" above. I know that I could use hasClass() but the actual class name may not necessarily be known at the time.

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  • Sorting a nodeset before passing to xsl:for-each

    - by Zack Mulgrew
    I have a situation where loop through a sorted nodeset and apply a template on each of the nodes: <div id="contractscontainer"> <xsl:for-each select="document"> <xsl:sort select="content[@name='ClientName']/text()" /> <xsl:apply-templates select="." mode="client-contract" /> </xsl:for-each> </div> I want to do something special with the "first" 5 nodes in the node set and render them nested element. The problem is that they need to be in the same order as if they were sorted (as they are in the loop). I had planned on doing this by using two xsl:for-each elements, each with the correct nodes selected from the set. I can't do this, however, because they need to be sorted before I can select the "first" 5. Example: <div id="contractscontainer"> <div class="first-five"> <xsl:for-each select="document[position() < 6]"> <xsl:sort select="content[@name='ClientName']/text()" /> <xsl:apply-templates select="." mode="client-contract" /> </xsl:for-each> </div> <div class="rest-of-them"> <xsl:for-each select="document[position() > 5]"> <xsl:sort select="content[@name='ClientName']/text()" /> <xsl:apply-templates select="." mode="client-contract" /> </xsl:for-each> </div> </div> I don't think this will work because I'm selecting the nodes by position before sorting them, but I can't use xsl:sort outside of the xsl:for-each. Am I approaching this incorrectly?

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  • Getting Dictionary<string,string> from List<Control>

    - by codymanix
    I want a dictionary containing the names and text of all controls. Is it possible with predefined framework methods/LINQ/colection initializers or do I have to make a loop and add all entries by myself? This gives me an error message: List<Control> controls; // .. initialize list .. controls.ToDictionary((Control child,string k)=>new KeyValuePair<string,string>(child.Name, child.Text));

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  • How to define and use Python generators appropriately

    - by Morlock
    I want to define a generator from a list that will output the elements one at a time, then use this generator object in an appropriate manner. a = ["Hello", "world", "!"] b = (x for x in a) c = next(b, None) while c != None: print c, c = next(b, None) Is there anything wrong or improvable with the while approach here? Is there a way to avoid having to assign 'c' before the loop? Thanks!

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  • HTML anchor too pull all Sticky Posts ?

    - by Gnee
    Is there a way to format an tag to send a query, pull all Sticky Posts, and loop through them? Since 'sticky' is not a category, I cant format the link in the normal : http://mysite.com/category/cars I'm thinking is probably going to have to be some kind of url query string sent in as GET.

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  • Is there a way to avoid Wacom Control Panel to stop showing in certain cases ?

    - by S.gfx
    This is the problem: Suddenly, you double click on desktop wacom tablet settings icon, and it wont show the dialog. It appears to be loaded as it's shown down in the windows taskbar. I suspect is caused by change of resolution or some setting, maybe suddenly it sets the origin of the panel dialog at some 3000 thosand pixels to the right or something. I have digged that wacom_tablet.dat file to see if I fix it changing some value there, but looks like a log, a history, more than a ini for settings... And anyway does not solve it. My solution is having always a very complete settings file done and backed up to restore (with wacom utility for this, which in previous driver versions did not exist) when this happens, but is counter productive: You change the settings even per each project(and software) needs. I have seen it happenning with Cintiq 12", intuos4 A6, Graphires, Intuos 1. Is just me, doing something weird every time? I doubt it, is normal use, I am amazed that seems no one else had this prob(or nobody asked), happens often with typical use. Maybe is because am setting a shortcut in the desktop? Weird as it works perfect till some random moment... (Have digged Wacom's forums and FAQs, then here, but nothing related to it... Neither in "related questions".) The thing happens in Win XP, 7, etc. Done so during years in my experience, and several times at work, which is worse.

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