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  • Akamai charge questions

    - by Dhana
    I am wondering if anyone has an simple answer to this. If you hit an Akamai server for an image, but the response is returned with a 304 code instead of a 200, does Akamai charge for the call since no data is returned with a 304 and image is served from the browser cache?

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  • Continuously 'Rendering template' on freemarker+struts2

    - by Foucrazy
    I'm using struts2 with freemarker (included in struts2 lib) and i'm trying to speed up my web-app. In the logs continuously appear: UIBean.debug(57) | Rendering template /template/xhtml/a FreemarkerTemplateEngine.debug(57) | Rendering template /template/simple/a.ftl and this for each tag. The problem is that i don't know if it's normal, i just set properties for caching templates: struts.properties: struts.freemarker.templatesCache=true and freemarker.properties: template_update_delay=60000

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  • Problem of * in Command line argument

    - by Nithya
    Hi, This is simple question only... i did a program in java that accepts input via command line arguments. I get input of two numbers and operator in command line. multiplying two numbers, i have to give input as 5 3 *. But if i give like this, i cant get answer. Y its not accept * in cmd.... waiting for reply guys...

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  • How to elegantly create a datatable with Django ?

    - by Inshim
    Here's a common situation that I have and wish to avoid creating tedious loops and fiddling with html tables: I have a model Movie, which is has fkeys to Director and to Genre. How can I elegantly render a simple data table that has on one axis the different Directors, on another axis the different Genres, and inside each cell the count of the movies filtered by the respective Director and Genre? Thanks!

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  • Data aggregation mongodb vs mysql

    - by Dimitris Stefanidis
    I am currently researching on a backend to use for a project with demanding data aggregation requirements. The main project requirements are the following. Store millions of records for each user. Users might have more than 1 million entries per year so even with 100 users we are talking about 100 million entries per year. Data aggregation on those entries must be performed on the fly. The users need to be able to filter on the entries by a ton of available filters and then present summaries (totals , averages e.t.c) and graphs on the results. Obviously I cannot precalculate any of the aggregation results because the filter combinations (and thus the result sets) are huge. Users are going to have access on their own data only but it would be nice if anonymous stats could be calculated for all the data. The data is going to be most of the time in batch. e.g the user will upload the data every day and it could like 3000 records. In some later version there could be automated programs that upload every few minutes in smaller batches of 100 items for example. I made a simple test of creating a table with 1 million rows and performing a simple sum of 1 column both in mongodb and in mysql and the performance difference was huge. I do not remember the exact numbers but it was something like mysql = 200ms , mongodb = 20 sec. I have also made the test with couchdb and had much worse results. What seems promising speed wise is cassandra which I was very enthusiastic about when I first discovered it. However the documentation is scarce and I haven't found any solid examples on how to perform sums and other aggregate functions on the data. Is that possible ? As it seems from my test (Maybe I have done something wrong) with the current performance its impossible to use mongodb for such a project although the automated sharding functionality seems like a perfect fit for it. Does anybody have experience with data aggregation in mongodb or have any insights that might be of help for the implementation of the project ? Thanks, Dimitris

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  • Flash AS3 - XMLList - List items with number of times they occur

    - by Dale
    I have an XMLList 'Keywords', which consists of about 30 XML items. I want to count the number of unique keywords in the List, and how often they occur. Then display the top 3 most occuring keywords. There's probably a simple sorting/count function to carry this out, however, i'm quite new to as3 so please forgive my naivety. Cheers.

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  • ASP.NET csv excel issue with strange characters

    - by cfdev9
    I'm exporting a table of data to csv format, eg "COL1","COL2","COL3" "1","some text", "£232.00" "2","some more text", "£111.00" "3","other text", "£2.00" The code to export is fairly simple using an ashx handler context.Response.Clear() context.Response.ContentType = "text/csv" context.Response.AddHeader("Content-disposition", "attachment;filename=data.csv") context.Response.AddHeader("Cache-Control", "must-revalidate") context.Response.AddHeader("Pragma", "must-revalidate") context.Response.Write(data) context.Response.Flush() context.Response.End() My issue is when excel trys to open the exported file the character  appears before all £ signs, eg £232.00 when the value should be £232.00

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  • Erlang programming exercises

    - by valya
    I'm learning Erlang. I've moved from Haskell so I don't want to and have to learn functional programming. But Erlang is quite specific because of the microprocesses. So, can you give me some examples which will be simple to test and measure and use all the power of Erlang?

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  • Best Practices - log in stored procedures?

    - by hgulyan
    If you have a long running SP, do you log somehow it's actions or just wait for this message? "Command(s) completed successfully." I assume, that there can be plenty solutions on this subject, but is there any best practice - a simple solution that is frequently used?

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  • run jsf application with myeclipse and jboss server

    - by chetan
    I develop simple jsf login application,that use icefaces component but, when I tries to run it in jboss server I got following error. Can't find TLD for location [http://java.sun.com/jsf/core]. JAR containing the TLD may not be in the classpath Can't find TLD for location [http://java.sun.com/jsf/html]. JAR containing the TLD may not be in the classpath

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  • Data transmission through USB

    - by ASHOK
    I want to develop code to transmit data from system to PIC through USB. Can anybody give good link regarding data transmission through USB. because i am new to this. NOTE: Very simple is code is enough to me. Thanks in Advance

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  • CGRect in C code

    - by Leif Andersen
    A simple google search for: CGRect + C or CGRect in C brings back only Apple, iPhone, and Objective-C websites. However, I remember hearing that Core Graphics was part of C at my university. Did I hear incorrectly, or is CGRect something that I can use in C, or even C++ as it's Object oriented?

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  • How to do a join that removes values?

    - by Georg
    Customers Holidays id | name customer_id | start | end ---+------ ------------+--------+------ 1 | Peter 1 | 5 | 10 2 | Simon 1 | 15 | 20 3 | Mary 2 | 5 | 20 How should my SQL query look that out of start=11,end=14 I get these customers: Peter Mary Is this even manageable with a simple SQL join, or do I need to use sub-queries?

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  • Result set mapping in Grails / GORM

    - by armandino
    I want to map the result of a native SQL query to a simple bean in grails, similar to what the @SqlResultSetMapping annotation does. For example, given a query select x.foo, y.bar, z.baz from //etc... map the result to class FooBarBaz { String foo String bar String baz } Can anyone provide an example of how to do this in grails? Thanks in advance.

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  • Grails Liferay portlet not invoking action

    - by RJ Regenold
    I am trying to create a simple portlet for Liferay 5.2.2 using Grails 1.2.1 with the grails-portlets 0.7 and grails-portlets-liferay 0.2 plugins. I created and deployed a stock portlet (just updated title, description, etc...). It deploys correctly and the view renders correctly. However, when I submit the default form that is in view.gsp it never hits the actionView function. Here are the relevant code bits: SearchPortlet.groovy class SearchPortlet { def title = 'Search' def description = ''' A simple search portlet. ''' def displayName = 'Search' def supports = ['text/html':['view', 'edit', 'help']] // Liferay server specific configurations def liferay_display_category = 'Category' def actionView = { println "In action view" } def renderView = { println "In render view" //TODO Define render phase. Return the map of the variables bound to the view ['mykey':'myvalue'] } ... } view.gsp <%@ taglib uri="http://java.sun.com/portlet" prefix="portlet" %> <div> <h1>View Page</h1> The map returned by renderView is passed in. Value of mykey: ${mykey} <form action="${portletResponse.createActionURL()}"> <input type="submit" value="Submit"/> </form> </div> The tomcat terminal prints In render view whenever I view the portlet, and after I press the submit button. It never prints the In action view statement. Any ideas? Update I turned on logging and this is what I see whenever I click the submit button in the portlet: [localhost].[/gportlet] - servletPath=/Search, pathInfo=/invoke, queryString=null, name=null [localhost].[/gportlet] - Path Based Include portlets.GrailsDispatcherPortlet - DispatcherPortlet with name 'Search' received render request portlets.GrailsDispatcherPortlet - Bound render request context to thread: com.liferay.portlet.RenderRequestImpl@7a158e portlets.GrailsDispatcherPortlet - Testing handler map [org.codehaus.grails.portlets.GrailsPortletHandlerMapping@1f06283] in DispatcherPortlet with name 'Search' portlets.GrailsDispatcherPortlet - Testing handler adapter [org.codehaus.grails.portlets.GrailsPortletHandlerAdapter@74f72b] portlets.GrailsPortletHandlerAdapter - portlet.handleMinimised not set, proceeding with normal render portlet.SearchPortlet - In render view portlets.GrailsPortletHandlerAdapter - Couldn't resolve action view /search/null.gsp portlets.GrailsPortletHandlerAdapter - Trying to render mode view /search/view.gsp portlets.GrailsDispatcherPortlet - Setting portlet response content type to view-determined type [text/html;charset=ISO-8859-1] [localhost].[/gportlet] - servletPath=/WEB-INF/servlet/view, pathInfo=null, queryString=null, name=null [localhost].[/gportlet] - Path Based Include portlets.GrailsDispatcherPortlet - Cleared thread-bound render request context: com.liferay.portlet.RenderRequestImpl@7a158e portlets.GrailsDispatcherPortlet - Successfully completed request The fourth line in that log snippet says Bound render request..., which I don't understand because the action in the form that is in the portlet is to the action url. I would've thought that should be an action request.

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  • Synchronous and asynchronous callbacks

    - by csharpbaby
    I get confused with some terms while reading MSDN documents and code samples. What are callbacks in C#? In particular, what are synchronous and asynchronous callbacks ? Please explain these from a layman's point of view. Also, please explain the IAsyncResult interface. How can we implement it? (with very simple example) Thanks in advance. EDITED: Fixed spelling, grammar

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  • amfPHP Function Input Trouble

    - by she hates me
    Hello, I'm writing an amfPHP function which should take string input. It takes alphanumeric characters without a problem, but unfortunately it returns data as "2" if I send "2.UgnFl4kAWovazp_tVo6fHg__.86400.1260025200-571701419" as parameter. here is the function (real simple as you can see) function checkOpenSession($guid, $session_key) { return $session_key; }

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  • UISlider to control AVAudioPlayer

    - by David Pollak
    hi everyone, I'm trying to implement a little function in my app. I am currently playing sounds as AVAudioPlayers and that works fine. What I would like to add is to control the sound's position (currentTime) with an UISlider: is there a simple way to do it ? I looked at an Apple project but it was quite messy....have you got samples or suggestions ? Thanks to everyone in advance

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