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  • Improve long mysql query

    - by John Adawan
    I have a php mysql query like this $query = "SELECT * FROM articles FORCE INDEX (articleindex) WHERE category='$thiscat' and did>'$thisdid' and mid!='$thismid' and status='1' and group='$thisgroup' and pid>'$thispid' LIMIT 10"; As optimization, I've indexed all the parameters in articleindex and I use force index to force mysql to use the index, supposedly for faster processing. But it seems that this query is still quite slow and it's causing a jam and maxing out the max mysql connection limit. Let's discuss how we can improve on such long query.

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  • Improve long mysql query

    - by John Adawan
    I have a php mysql query like this $query = "SELECT * FROM articles FORCE INDEX (articleindex) WHERE category='$thiscat' and did>'$thisdid' and mid!='$thismid' and status='1' and group='$thisgroup' and pid>'$thispid' LIMIT 10"; As optimization, I've indexed all the parameters in articleindex and I use force index to force mysql to use the index, supposedly for faster processing. But it seems that this query is still quite slow and it's causing a jam and maxing out the max mysql connection limit. Let's discuss how we can improve on such long query.

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  • dijit hovering MenuItem issue

    - by John
    I have a dijit.layout.TabContainer on my form. I resize the browser window in such a way that all tabs won't fit in a single screen. In this case dijit automatically adds a drop-down button at the right end of the TabContainer (I get this for free). If I click on the drop-down button then I get the full List of Tab Names. Hovering over the List of Tab Names (which is in fact a collection of menu items) it blanks out the menu item name which I'm currently over. e.g. Full List: Tab1 Tab2 Tab3 Hovering over Tab2 I get: Tab1 Tab3 I get the same issue with any other dijit.Menu, dijit.MenuItem AND I get the same issue on IE, Firefox, Chrome. I haven't tested on any other browser. Thanks.

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  • C++: How would I get unix time?

    - by John D.
    I need a function or way to get the UNIX epoch in seconds, much like how I can in PHP using the time function. I can't find any method except the time() in ctime which seems to only output a formatted date, or the clock() function which has seconds but seems to always be a multiple of 1 million, nothing with any resolution. I wish to measure execution time in a program, I just wanted to calculate the diff between start and end; how would a C++ programmer do this? EDIT: time() and difftime only allow resolution by seconds, not ms or anything too btw.

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  • How is location accuracy measured in Android?

    - by John Palmer
    Does anyone know the proper interpretation of the accuracy measurements returned by getAccuracy()? For instance, are they calculated as: Circular Error Probability (meaning, if i understand correctly, radius of a 50% confidence circle)? Radius of 95% confidence circle? something else? Many thanks for any advice you can give me.

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  • MVC binding form data problem.

    - by John
    I am using an object that matches all the fields in my form. I then use the default binding to populate the object in my action, like this; public ActionResult GetDivisionData(DivisionObj FormData) My DivisionObj initializes all it's values to string.empty in the constructor. The problem is that when the binder populates the model from the posted form data, any data that is not posted is set to null in the object, eventhough I initialized the object to contain empty strings. Is there a way to change this so that unposted data will be an empty string.

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  • Django Form field initial value on failed validation

    - by John
    Hi, how do I set the value of a field element after a form has been submitted but has failed validation? e.g. if form.is_valid(): form.save() else: form.data['my_field'] = 'some different data' I don't really want to put it in the view though and would rather have it as part of the form class. Thanks

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  • Changing A Different Class Display on Hover with Jquery

    - by John K
    Ok, here's what I'm trying to do. I have a DIV box with a child element set with DISPLAY: NONE;. I'm trying to use Jquery so that when the mouse enters the parent DIV box, the child element is made visible, and then hides when the mouse leaves the parent DV. There will be multiple divs on the page with these classes. For some reason it's not working. Any ideas? Here's my code: HTML: <div class="parent"> <span class="handle" style="display: none;">My Handle</span> <p>Child Text</p> </div> Javascript: $(document).ready(function () { $('.parent').mouseenter(function(){ $(this).next('.handle').show(); }); $('.parent').mouseleave(function(){ $(this).next('.handle').hide(); }); })

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  • django-admin.py startproject mysite not working well on windows 7

    - by john
    Hi I'm learning django and I did successfully start a site on Window XP by following the tutorial. However, on Window 7 when I issued: django-admin.py startproject mysite python.exe was started and a window appeared to ask me to choose either python.exe or other program to open a file.... did I do anthing wrong or there are more tricks for window 7? thanks.

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  • Multipage forms for joomla (looking outside the box)

    - by John Snow
    I have created a number of forms using various Joomla components which have more or less worked successfully. Recently I have attempted to create mult-page forms - the forms work...but they are slow as molasses. Having spent a couple of weeks trying to resolve this and not seeing any signs of improvement ...... I wonder if anyone has experience of using hosted forms services in Joomla either using a wrapper or as a static page within a Joomla site. Any pointers or recommendations would be appreciated.

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  • How can I use the compile time constant __LINE__ in a string?

    - by John
    I can use __LINE__ as a method parameter just fine, but I would like an easy way to use it in a function that uses strings. For instance say I have this: 11 string myTest() 12 { 13 if(!testCondition) 14 return logError("testcondition failed"); 15 } And I want the result of the function to be: "myTest line 14: testcondition failed" How can I write logError? Does it have to be some monstrosity of a macro?

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  • How can I get `find` to ignore .svn directories?

    - by John Kugelman
    I often use the find command to search through source code, delete files, whatever. Annoyingly, because Subversion stores duplicates of each file in its .svn/text-base/ directories my simple searches end up getting lots of duplicate results. For example, I want to recursively search for uint in multiple messages.h and messages.cpp files: # find -name 'messages.*' -exec grep -Iw uint {} + ./messages.cpp: Log::verbose << "Discarding out of date message: id " << uint(olderMessage.id) ./messages.cpp: Log::verbose << "Added to send queue: " << *message << ": id " << uint(preparedMessage->id) ./messages.cpp: Log::error << "Received message with invalid SHA-1 hash: id " << uint(incomingMessage.id) ./messages.cpp: Log::verbose << "Received " << *message << ": id " << uint(incomingMessage.id) ./messages.cpp: Log::verbose << "Sent message: id " << uint(preparedMessage->id) ./messages.cpp: Log::verbose << "Discarding unsent message: id " << uint(preparedMessage->id) ./messages.cpp: for (uint i = 0; i < 10 && !_stopThreads; ++i) { ./.svn/text-base/messages.cpp.svn-base: Log::verbose << "Discarding out of date message: id " << uint(olderMessage.id) ./.svn/text-base/messages.cpp.svn-base: Log::verbose << "Added to send queue: " << *message << ": id " << uint(preparedMessage->id) ./.svn/text-base/messages.cpp.svn-base: Log::error << "Received message with invalid SHA-1 hash: id " << uint(incomingMessage.id) ./.svn/text-base/messages.cpp.svn-base: Log::verbose << "Received " << *message << ": id " << uint(incomingMessage.id) ./.svn/text-base/messages.cpp.svn-base: Log::verbose << "Sent message: id " << uint(preparedMessage->id) ./.svn/text-base/messages.cpp.svn-base: Log::verbose << "Discarding unsent message: id " << uint(preparedMessage->id) ./.svn/text-base/messages.cpp.svn-base: for (uint i = 0; i < 10 && !_stopThreads; ++i) { ./virus/messages.cpp:void VsMessageProcessor::_progress(const string &fileName, uint scanCount) ./virus/messages.cpp:ProgressMessage::ProgressMessage(const string &fileName, uint scanCount) ./virus/messages.h: void _progress(const std::string &fileName, uint scanCount); ./virus/messages.h: ProgressMessage(const std::string &fileName, uint scanCount); ./virus/messages.h: uint _scanCount; ./virus/.svn/text-base/messages.cpp.svn-base:void VsMessageProcessor::_progress(const string &fileName, uint scanCount) ./virus/.svn/text-base/messages.cpp.svn-base:ProgressMessage::ProgressMessage(const string &fileName, uint scanCount) ./virus/.svn/text-base/messages.h.svn-base: void _progress(const std::string &fileName, uint scanCount); ./virus/.svn/text-base/messages.h.svn-base: ProgressMessage(const std::string &fileName, uint scanCount); ./virus/.svn/text-base/messages.h.svn-base: uint _scanCount; How can I tell find to ignore the .svn directories?

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  • C++ - Access array (in main) from methods outside main

    - by John Smith
    I have an array in my main class that holds objects that I need to print out for a menu listing. The array is declared and initialized in main. I need to, however, access the same array in a sub-menu function. If I copy the code (for loop that prints out the values) to the sub-menu, nothing is printed (presumably because it can't access the original array and has made a new, blank one). Is there any way (without making the array a global variable) that I can access the array in this sub-menu? Both the main and the sub-menu function are in the same file and the sub-menu is called from main. Maybe to put it more simply, can I use scope resolution to bring me up one 'level' in scope?

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  • SWIG-Lua question on class returning another class

    - by John Smith
    I am concreting a question I had earlier. I have two classes in C++ and I use SWIG to wrap them. A method in one class can return a pointer to the other class. How can I get Lua to see it as more than just a userdata? More concretely: I have class fruit { int numberofseeds; //some other stuff about fruit constructors etc... public: getseedcount() { return numberofseeds; } } class tree { fruit * apple; public: //constructors and whatnot fruit * getfruit() { return apple; } } I wrap these two class with SWIG so I can access them in Lua So I can get in Lua the object x=pomona.tree(grannysmith). My question now is: How can I arrange for things so that when I type y=x:getfruit() I will get a pomona:fruit type object? Where I can write something line y:getseedcount()? At the moment all I get is userdata which not edible.

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  • unwanted space before and after nested html table using Internet Explorer 8

    - by John
    I have an html table nested in an html table cell. I want the nested table to use the full size of the cell it is nested in. When I use firefox or google chrome I get the result I want but when I use Internet Explorer 8 (even if I use td style="height="100%") the height of the nested cell depends on it's content. As a result I get whitespace before and after my nested table.

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  • Where is mpx386.6 and start.c in Minix 3.2?

    - by John Bowlinger
    I'm trying to follow along in Operating Systems and Implementation 3rd edition and I'm now at the part in the book where Tanenbaum is discussing bootup and kernel process switching. He keeps referring to these 2 files (mpx386.s, start.c) that are supposedly in a directory called kernel, but I can't seem to find them. In the root directory, when I go to boot/minix/3.2.0/kernel, kernel just seems to be a binary file that is illegible in terminal. There also seems to be a bunch of mod01-mod12 gz binary files as well in the 3.2.0 directory. Am I in the wrong directory, or is there something I need to install and do to read kernel? I would like to follow along with the book to what's on my screen, instead of constantly flipping back and forth. I realize alot of files are completely different from this book published in 2006 and I accept that, but this seems to be a critical juncture of the book and the operating system as a whole. If it's any consolation, I'm running the OS in Virtualbox on a 64-bit Macbook.

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  • Foreign Keys Duplicated in DataGridView

    - by John Doe
    I created a Windows Forms Application to which I added a DataGridView and LINQ to SQL Classes from one of my databases. I can successfully bind one of my database's tables to my DataGridView: var dataSource = from c in _db.NetworkedEquipments select c; dataGridView1.DataSource = dataSource; However, the foreign keys get duplicated, that is, the columns appear twice. How can I prevent this?

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