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  • functions inside or outside jquery document ready

    - by Hans
    Up until now I just put all my jQuery goodness inside the $(document).ready() function, including simple functions used in certain user interactions. But functions that don´t require the DOM document to be loaded or are only called afterwards anyway, can be placed outside the $(document).ready() as well. Consider for example a very simple validation function such as: function hexvalidate(color) { // Validates 3-digit or 6-digit hex color codes var reg = /^(#)?([0-9a-fA-F]{3})([0-9a-fA-F]{3})?$/; return reg.test(color); } The function is only called from within the $(document).ready() function though. What is best practice (syntax, speed); placing such a function inside or outside the jquery document ready function?

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  • What is the fastest way to learn JPA ?

    - by Jacques René Mesrine
    I'm looking for the best resources (books, frameworks, tutorials) that will help me get up to speed with JPA. I've been happily using iBatis/JDBC for my persistence needs, so I need resources that will hopefully provide comparable functions on how to do things. e.g. how to I set the isolation level for each transaction ? I know there might be 10 books on the topic, so hopefully, your recommendation could narrow down to the best 2 books. Should I start with OpenJPA or are there other opensource JPA frameworks to use ? P.S. Do suggest if I should learn JPA2 or JPA1 ? My goal ultimately is to be able to write a Google App Engine app (which uses JPA1). Thanks Jacque

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  • Asp.net Site on GoDaddy Loads Slowly

    - by Randy
    I just published a very small site to GoDaddy that I programmed in Microsoft Visual Web Developer 2008. The site only contains 6 sheets, none of which are data intensive. Each has a few small images that serve mostly to navigate to the other sheets. There is no data, no SQL, nothing like that. There is one master page that governs the page layout for all of the pages. Everything works fine, for the most part. I am posting because the site loads quite slowly, particularly considering how little content is being loaded. Can anybody give me any advice about what I should look at to speed this thing up a little bit? Is this an asp.net issue? Use of master pages? Godaddy? Something else? I'm a newbie, so speak slowly. Thanks.

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  • How well does Solr scale over large number of facet values?

    - by Continuation
    I'm using Solr and I want to facet over a field "group". Since "group" is created by users, potentially there can be a huge number of values for "group". Would Solr be able to handle a use case like this? Or is Solr not really appropriate for facet fields with a large number of values? I understand that I can set facet.limit to restrict the number of values returned for a facet field. Would this help in my case? Say there are 100,000 matching values for "group" in a search, if I set facet.limit to 50. would that speed up the query, or would the query still be slow because Solr still needs to process and sort through all the facet values and return the top 50 ones? Any tips on how to tune Solr for large number of facet values? Thanks.

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  • Slowness of Netbeans Platform Apps - how to mitigate?

    - by user559298
    Hi, We are developing a commerical application (pretty complex) in java using Netbeans IDE. We have 2 options in netbeans to create it- 1. Develop Java desktop app 2. Netbeans Platform app We have requirement that application startup and response times should be very very fast, should be modular etc. We did Proof of Technology by creating apps using both approaches mentioned above. We found Netbeans platform apps are very slow during startup and during screen navigation compared to pure Swing based desktop apps. We tried to implement suggestions provided at http://wiki.netbeans.org/Category:Performance:FAQ and in other blogs and forums to improve on speed of the app but were not successful. We feel for creating a complex desktop app Netbeans platform app would be better suited, but its not meeting our performance requirements (startup and response times, memory footprints, CPU usage guidelines etc). Can any one guide us on how to mitigate our problem of improving performance of Netbeans Platforms apps? Thanks in advance for your help. -bhan

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  • Fermat factorization method limit

    - by Fakrudeen
    I am trying to implement Fermat's factorization [Algorithm C in Art of computer programming Vol. 2]. Unfortunately in my edition [ISBN 81-7758-335-2], this algorithm is printed incorrectly. what should be the condition on factor-inner loop below? I am running the loop till y <= n [passed in as limit]. (if (< limit y) 0 (factor-inner x (+ y 2) (- r y) limit)) Is there anyway to avoid this condition altogether, as it will double the speed of loop? (define (factor n) (let ( ( square-root (inexact->exact (floor (sqrt n))) ) ) (factor-inner (+ (* 2 square-root) 1) 1 (- (* square-root square-root) n) n) ) ) (define (factor-inner x y r limit) (if (= r 0) (/ (- x y) 2) (begin (display x)(display " ")(display y)(display " ")(display r)(newline) ;(sleep-current-thread 1) (if (< r 0) (factor-inner (+ x 2) y (+ r x) limit) (if (< limit y) 0 (factor-inner x (+ y 2) (- r y) limit)) ) ) ) )

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  • SQL Server - Storing multiple decimal values in a column?

    - by cshah
    I know storing multiple values in a column. Not a good idea. It violates first normal form --- which states NO multi valued attributes. Normalize period... I am using SQL Server 2005 I have a table that require to store lower limit and uppper limit for a measurement, think of it as a minimum and maximum speed limit... only problem is only 2 % out of hundread i need upper limit. I will only have data for lower limit. I was thinking to store both values in a column (Sparse column introduces in 2008 so not for me) Is there a way...? Not sure about XML..

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  • Super Noob C++ variable help

    - by julian
    Ok, I must preface this by stating that I know so so little about c++ and am hoping someone can just help me out... I have the below code: string GoogleMapControl::CreatePolyLine(RideItem *ride) { std::vector<RideFilePoint> intervalPoints; ostringstream oss; int cp; int intervalTime = 30; // 30 seconds int zone =ride->zoneRange(); if(zone >= 0) { cp = 300; // default cp to 300 watts } else { cp = ride->zones->getCP(zone); } foreach(RideFilePoint* rfp, ride->ride()->dataPoints()) { intervalPoints.push_back(*rfp); if((intervalPoints.back().secs - intervalPoints.front().secs) > intervalTime) { // find the avg power and color code it and create a polyline... AvgPower avgPower = for_each(intervalPoints.begin(), intervalPoints.end(), AvgPower()); // find the color QColor color = GetColor(cp,avgPower); // create the polyline CreateSubPolyLine(intervalPoints,oss,color); intervalPoints.clear(); intervalPoints.push_back(*rfp); } } return oss.str(); } void GoogleMapControl::CreateSubPolyLine(const std::vector<RideFilePoint> &points, std::ostringstream &oss, QColor color) { oss.precision(6); QString colorstr = color.name(); oss.setf(ios::fixed,ios::floatfield); oss << "var polyline = new GPolyline(["; BOOST_FOREACH(RideFilePoint rfp, points) { if (ceil(rfp.lat) != 180 && ceil(rfp.lon) != 180) { oss << "new GLatLng(" << rfp.lat << "," << rfp.lon << ")," << endl; } } oss << "],\"" << colorstr.toStdString() << "\",4);"; oss << "GEvent.addListener(polyline, 'mouseover', function() {" << endl << "var tooltip_text = 'Avg watts:" << avgPower <<" <br> Avg Speed: <br> Color: "<< colorstr.toStdString() <<"';" << endl << "var ss={'weight':8};" << endl << "this.setStrokeStyle(ss);" << endl << "this.overlay = new MapTooltip(this,tooltip_text);" << endl << "map.addOverlay(this.overlay);" << endl << "});" << endl << "GEvent.addListener(polyline, 'mouseout', function() {" << endl << "map.removeOverlay(this.overlay);" << endl << "var ss={'weight':5};" << endl << "this.setStrokeStyle(ss);" << endl << "});" << endl; oss << "map.addOverlay (polyline);" << endl; } And I'm trying to get the avgPower from this part: AvgPower avgPower = for_each(intervalPoints.begin(), intervalPoints.end(), AvgPower()); the first part to cary over to the second part: << "var tooltip_text = 'Avg watts:" << avgPower <<" <br> Avg Speed: <br> Color: "<< colorstr.toStdString() <<"';" << endl But of course I haven't the slightest clue how to do it... anyone feeling generous today? Thanks in advance

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  • Microsoft SQL Server 2008 - 99% fragmentation on non-clustered, non-unique index

    - by user550441
    I have a table with several indexes (defined below). One of the indexes (IX_external_guid_3) has 99% fragmentation regardless of rebuilding/reorganizing the index. Anyone have any idea as to what might cause this, or the best way to fix it? We are using Entity Framework 4.0 to query this, the EF queries on the other indexed fields about 10x faster on average then the external_guid_3 field, however an ADO.Net query is roughly the same speed on both (though 2x slower than the EF Query to indexed fields). Table id(PK, int, not null) guid(uniqueidentifier, null, rowguid) external_guid_1(uniqueidentifier, not null) external_guid_2(uniqueidentifier, null) state(varchar(32), null) value(varchar(max), null) infoset(XML(.), null) -- usually 2-4K created_time(datetime, null) updated_time(datetime, null) external_guid_3(uniqueidentifier, not null) FK_id(FK, int, null) locking_guid(uniqueidentifer, null) locked_time(datetime, null) external_guid_4(uniqueidentifier, null) corrected_time(datetime, null) is_add(bit, not null) score(int, null) row_version(timestamp, null) Indexes PK_table(Clustered) IX_created_time(Non-Unique, Non-Clustered) IX_external_guid_1(Non-Unique, Non-Clustered) IX_guid(Non-Unique, Non-Clustered) IX_external_guid_3(Non-Unique, Non-Clustered) IX_state(Non-Unique, Non-Clustered)

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  • What is faster? Drawing or Compositing?

    - by mystify
    I make extensive use of -drawRect: to do some nice animations. A timer tries to fire 30 times per second with -setNeedsDisplay, but it feels like just 20 times. Also I can't use -setNeedsDisplayInRect: because the animation covers the entire thing. Would it help to take some of those drawing operations out of -drawRect: and move them to a subview? -drawRect has to do less then, but instead the OS will have more work with compositing views. Is there a rule of thumb which one is more worse? I remember from an apple text that they claimed Core Animation doesn't redraw during animation. So is that their secret of speed? Using subviews in animations?

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  • What is a flexible, hybrid python collection object?

    - by Naveen
    As a way to get used to python, I am trying to translate some of my code to python from Autohotkey_L. I am immediately running into tons of choices for collection objects. Can you help me figure out a built in type or a 3rd party contributed type that has as much as possible, the functionality of the AutoHotkey_L object type and its methods. AutoHotkey_L Objects have features of a python dict, list, and a class instance. I understand that there are tradeoffs for space and speed, but I am just interested in functionality rather than optimization issues.

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  • Display data requested by an ajax.load() call once complete, not during the call.

    - by niczoom
    My jQuery code (using ajax) request's data from a php script (pgiproxy.php) using the following function: function grabPage($pageURL) { $homepage = file_get_contents($pageURL); echo $homepage; } I then extract the html code i need from the returned data using jQuery and insert it into a div called #BFX, as follows: $("#btnNewLoadMethod1").click(function(){ $('#temp1').load('pgiproxy.php', { data : $("#formdata").serialize(), mode : "graph"} , function() { $('#temp').html( $('#temp1').find('center').html() ); $('#BFX').html( $('#temp').html() ); }); }); This works fine. I get the html data (which is a gif image) i need displayed on screen in the correct div. The problem is i can see the html data loading into the div (dependant on network speed), but what I want is to insert the extracted html code into #BFX ONLY when the ajax request has fully completed.

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  • How do you use data binding in C# development ?

    - by MemoryLeak
    Recently I use data binding to speed up my development of C# winforms application. But I found that data binding is just useful when the control is Textbox or textare and text kind of controls. If things come to be radio button, image control or datagridview, it's hard for me to use data binding. For example, it's hard for me to bind a group of radio button to a database field. It's hard for me to pre-process the data in database and then bind to datagridview control(I know I can use view to do this, but it is not that convenient) So I really want to know, most of you guys when will use data binding? And how will you use it ?

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  • jQuery timer, ajax, and "nice time"

    - by Mil
    So for this is what I've got: $(document).ready(function () { $("#div p").load("/update/temp.php"); function addOne() { var number = parseInt($("#div p").html()); return number + 1; } setInterval(function () { $("#div p").text(addOne()); }, 1000); setInterval(function () { $("#geupdate p").load("/update/temp.php");} ,10000); }); So this grabs a a UNIX timestamp from temp.php and puts into into #div p, and then adds 1 to it every second, and then every 10 seconds it will check the original file to keep it up to speed. My problem is that I need to format this UNIX timestamp into a format such as "1 day 3 hours 56 minutes and 3 seconds ago", while also doing all the incrementation and ajax calls. I'm not very experienced with jquery/javascript, so I might be missing something basic.

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  • UISwitch quick toggle multiple times.

    - by Tejaswi Yerukalapudi
    I was playing around my app and I was toggling a UISwitch really fast (who can resist?). So, I toggled it really fast for 10-15 times, an array that should contain the data from the table view cell that I have my switch in either has extra copies of the same cell sometimes, just one copy (the correct case) a few times and no data in it at all some times. The app works fine if it's toggled at normal speed. I'm pretty sure this scenario won't really happen with my users, but I'm still curious as to why it's happening. Thanks, Teja

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  • Is there a chance that sending an email via a thread could ever fail to complete?

    - by Benjamin Dell
    I have a project where I send a couple of emails via a seperet thread, to speed up the process for the end-user. It works successfully, but i was just wondering whether there were any potfalls that i might not have considered? My greatest fear is that the user clicks a button, it says that the message has been sent (as it will have been sent to the thread for sending) but for some reason the thread might fail to send it. Are there any situations where a thread could be aborted prematurely? Please note, that i am not talking about network outages or obvious issues with an email recipient not existing. For simplicites sake please assume that the connect is up, the mail server alive and the recipient valid. Is it possible, for example, for the thread to abort prematurely if the user kills the browser before the thread has completed? This might be a silly question, but i just wanted to make sure i knew the full ramifications of using a thread in this manner. Thanks, in advance, for your help.

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  • Is there a lightweight datagrid alternative in Flex ?

    - by Wayne
    What is the most performant way of displaying a table of data in Flex? Are there alternatives to the native Flex Datagrid Component? Alternatives that are noted for their rendering speed? Are there other ways to display a table? I have a datagrid with roughly 70 lines and 7 columns of simple text data. This is currently created and loaded in memory. This is being refreshed rapidly (about 800 msec) and there is a slight lag in other animations when it is rendering the table... So I am trying to cut down this render time.

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  • A resource for installation or setup folder hierarchy of various applications

    - by Luay
    Is there a web site (or something else) that has information on folders and their hierarchy where various programs and applications are installed? Please let me explain. I am writing an application that (part of what it does) references certain files installed by other application. To be able to determine the file paths for these folders I have to download and install each application seperatly on my development pc, search for the file I want, and then write its path in my application. This method is very time consuming and, frankly, boring, as it requires downloading and installing each application (some of them in excess of 600MB) and then locating the required file just to be able to "know" its path. So, I was wondering if there is something that could speed things up. like, for example, a website that would have such information. I tried each of the applications own website for information but no dice. Any help from you will be much appreciated. Many thanks

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  • iPhone StoreKit development: Can't create a test user?

    - by Cruinh
    I'm trying to get up to speed on how to develop an in-app store using the new 3.0 SDK... but I'm a bit stuck in that I don't seem to be able to create a test account. The iTunes Connect FAQ states "To create test users for your sandbox environment, go to the Manage Users section of iTunes Connect and select In App Purchase Test User. Your test users will not have iTunes Connect access. They will just have access to the sandbox environment." ...but when I go to that Manage Users section, there's no mention of any sort of "In App Purschase Test User" or how to make one. Did I miss doing something to enable that? There is another section of that same FAQ that seems to suggest I need to have a paid app in the store first? Is that the reason I can't even use the test environment?

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  • Java creation of new set too slow

    - by Mgccl
    I have this program where it have some recursive function similar to this: lambda(HashSet<Integer> s){ for(int i=0;i<w;i++){ HashSet<Integer> p = (HashSet) s.clone(); p.addAll(get_next_set()); lambda(p); } } What I'm doing is union every set with the set s. And run lambda on each one of the union. I run a profiler and found the c.clone() operation took 100% of the time of my code. Are there any way to speed this up considerably?

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  • Vim Editor is very smart?

    - by Narek
    I am programming in C++ or Java. So I want to use Vim editor, because it is very flexible. I have heard that I can configure the Vim editor to be able to go from object to the definition from function to the definition from class name to the definition Do we have any professional Vim-er that could tell me how exactly to configure Vim for that? Thanks in advance. P.S. In case readers will consider this question is not connected with programming, I would say that this is improving speed of programming. So it is a help to the programmer. So please don't close this question. EDIT: Also I would like to know how vim works with code completion and can vim hint the list of methods that are available for the certain object? If yes, then I would like to know how to configure these options too?

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  • How to update control state in asp.net/ajax?

    - by darth_alexious
    I'm trying to update certain controls according to a selection in a dropdown list. For example, in the "selectedIndexChanged" event of a dropDownList, if a user selects the value "sport-car" the text box "payload" is disabled and the textbox "max speed" is enabled. private sub dropDownList1_SelectedIndexChanged(byval sender as object, byval e as eventargs) handles dropDownList1.SelectedIndexChanged If dropDownList1.selectedValue = "sport-car" then textBox_payLoad.enabled = false textBox_maxSpeed.enabled = true end if end sub When I'm doing something like this, the controls aren't enabled/disabled, even the event (wich I've added a breakpoint) seems not to be raised (sometimes several time after it is raised). Also, when the instructions in the condition is executed, nothing changes. What am I doing wrong? Maybe this is a very easy issue, but I'm a begginer in MS Visual Web Developer.

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  • MySQL, how can I SELECT WHERE one field value doesn't occurs in another?

    - by Jules
    I'm trying to do a search on my test server, speed isn't so important. I want to find if a phrase, the whole contents of one field, occurs in any part (as a whole) doesn't occur in another field. Heres my current query which finds if the phrase does occur SELECT pads.padid, pads.programname, keywords.word FROM Pads JOIN keywords ON Pads.Padid = keywords.Padid WHERE pads.Programname = keywords.word AND RemoveMeDate = '2001-01-01 00:00:00' My problem is that the field word contains other words too. I need to produce a count of where there isn't a keywords record with keywords.word equal to pads.programname ? EDIT: So if I have these records Pads: PadID=3 ProgramName=my prog PadID=4 ProgramName=Bad prog PadID=5 ProgramName=Good prog PadID=6 ProgramName=other prog Keywords: PadID=3 word=fox prog PadID=3 word=pig prog PadID=4 word=big prog PadID=4 word=nice prog PadID=5 word=fox prog PadID=6 word=bad prog PadID=6 word=fox prog The query I want would retun a count of 3 and record 6 has bad prog

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  • different small js files per page VS. 1x site-wide js file?

    - by Haroldo
    Different pages of my site have different js needs (plugins mainly), some need a lightbox, some dont, some need a carousel, some dont etc. With regards to pageloading speed should i option 1 - reference each js file when it is needed: so one page might have: <script type="text/javascript" src="js/carousel/scrollable.js"></script> <script type="text/javascript" src="js/jquery.easydrag.js"></script> <script type="text/javascript" src="js/colorbox/jquery.colorbox-min.js"></script> and another have: <script type="text/javascript" src="st_wd_assets/js/carousel/scrollable.js"></script> <script type="text/javascript" src="st_wd_assets/js/typewatch.js"></script> option 2 - combine and compress into one site_wide.js file: so each page would reference: <script type="text/javascript" src="js/site_wide.js"></script> there would be unused selectors/event listeners though, how bad is this? I would include any plugin notes/accreditations at the top of the site_wide.js file

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  • Book recommendation for a Ruby dev learning Java

    - by cpjolicoeur
    I've been a Ruby developer for the past 4-5 years, and prior to that coded in Perl and a language called ProvideX for years. As hard as it may seem, I've never written a Java application short of the basic Hello World app probably a decade ago. I'm beginning to start doing some Android development to port some iPhone applications we did for a client over to the Android platform. As such, I'm wondering what the best reference book I can buy is to get up to speed quickly with the features (and peculiarities) of Java. There are numerous "Learn Ruby for Java programmers" out there, but not really any reference books for going the otherway of Ruby-to-Java. I'm looking for something preferably like the "Learn Perl the Hard Way" book. I know how to code, I just need a reference on learning the proper mechanics of Java after having done Ruby (and a bit of Obj-C) work exclusively for the past few years.

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