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  • How to find the largest square in the number (Java)

    - by Ypsilon IV
    Hello everyone, I want to find the largest square in the number, but I am stuck at some point. I would really appreciate some suggestions. This is what I've done so far: I take the number on the input, factorize into prime numbers, and put the sequence of prime numbers to ArrayList. Numbers are sorted, in a sense, thus the numbers in the sequence are increasing. For example, 996 is 2 2 3 83 1000 is 2 2 2 5 5 5 100000 is 2 2 2 2 2 5 5 5 5 5 My idea now is to count number of occurrences of each elements in the sequence, so if the number of occurrences is divisible by two, then this is the square. In this way, I can get another sequence, where the right most element divisible by two is the largest square. What is the most efficient way to count occurrences in the ArrayList? Or is there any better way to find the largest square? Many thanks in advance!

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  • Same html file for different topics on Help Files

    - by Gpoy Gwapo
    I have a problem with the help files. For example i have this html file named search.html and there are 2 topics on my table of contents namely Name Search and Account Search. The same search.html will be used for the 2 topics. Now, i want to open the help file and point it to Name Search but instead, the treeview item that is opened on the table of contents is for the Account Search. How can i set it so that the the Name Search will be the one selected on the table of contents?

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  • Need a Javascript Expert, IE slow script

    - by Aaron Carlino
    I have a jQuery plugin running on my site that is executing very, very slowly in IE7/8 to the point that it throws a slow script warning to the user. It doesn't happen in any other browser, and I can't figure out what might be going on. If you go to this page: http://dev.xeetic.org/projects You'll see that there are 16 results on each page, and each one has a "flip" behavior attached, using the jQuery plugin "quickflip." Attaching this behavior is very slow in IE. If I reduce the result set to 8 or 4 per page, it's faster, but still very bogged down. I have contacted the author of the script with no success. I am willing to pay for a solution, if I'm allowed to offer such a thing on this site. Very desperate. Please help!

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  • Consolidating values in a junction table

    - by senloe
    I have the following schema: Parcels Segments SegmentsParcels ========= ========== ================= ParcelID SegmentID ParcelID ... Name SegmentID ... id A user of the data wants to consolidate Segments.Names and gave me a list of current Segment.Names mapped to new Segment.Names (all of which currently exist). So now I have this list in a temporary table with the currentID and newID to map to. What I want to do is update the SegmentID in SegmentsParcels based on this map. I could use the statement: update SegmentParcels set segmentID = [newID] from newsegments where segmentID = currentid but this will create some duplicates I have a unique constraint on ParcelID and SegmentID in SegmentParcels. What is the best way to go about this? I considered removing the constraint and then dealing with removing the duplicates (which I did at one point and could probably do again) but I was hoping there was a simpler way.

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  • detect if extended desktop is to the left or to the right

    - by bobobobo
    So, I have a screen capture utility (it takes full screen shots and saves it to png files) I've written, and it uses SM_CXVIRTUALSCREEN and SM_CYVIRTUALSCREEN to determine the width and height of the desktop. I then get the desktop DC and copy out the bits and save them as png. BitBlt( backDC, 0, 0, backBufferCX, backBufferCX, desktopDC, X_SRC, 0, SRCCOPY ); Here X_SRC is usually 0, UNLESS THE DESKTOP HAS BEEN EXTENDED "TO THE LEFT". In that case it needs to be -1280px, for example, if the left monitor measures 1280px. How can I determine if the desktop's starting point is negative (if the user has extended his desktop to the left?)

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  • Serve static symbolic links with nginx

    - by mirceapasoi
    I'm using nginx to serve some static files that are actually symbolic links. When I do this the Last-Modified headers sent by nginx use the timestamp of the target file, not of the link itself. So, if I now have link C pointing to A, and I change it to point it to B (A and B have the same timestamp) I still see the content of A in the browser. I don't know if it's from the browser cache (because it has the same Last-Modified header) or from nginx. Any idea on how to fix this?

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  • BlackBerry. How to define direction of Scroll or Focus change?

    - by Lyubomyr Dutko
    Hi, does BlackBerry has any possibility to track focus or scroll change direction? I will describe a case. On UI we have a list and some horizontal tab bar (tab bar at top and below the list actually). If User is somewhere in the middle of a list and decides to click another tab, it appears a little difficult to put focus on the Tab control, so User scrolls to the first list item and after changes focus to tab (as a result very long operation). The point here How to catch event of horizontal scroll to change currently focused tab? And after if you scroll (by trackball) vertically you go back to list. Possibly you can advice with the right approach how to resolve such issues? Thanks Lyubomyr

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  • form tag - is it required on ajax sites?

    - by benpage
    i recently was working on an ASP.NET MVC site that basically serves static html and uses ajax gets to return data to the page when inputs are changed. there is actually no posting or getting from an html input tag on the pages at all. (it is a specific style of site that is not used by the general public, so having compatibility problems for people without javascript is not an issue) after designing the site, i realised that i hadn't even included any form tags. as the site does not use any direct posts or gets, and apart from it being just good html design, i wondered, in my particular situation, if there was any point to having any form tags on the page?

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  • Where should I define custom routes in my ZF 1.10 app?

    - by Ross
    With the new Zend_Application/Zend_Application_Bootstrap classes I'm confused as to where I should be applying my custom routes. For example, at the moment I have one route: protected function _initRouter() { $router = new Zend_Controller_Router_Rewrite; $route = new Zend_Controller_Router_Route('news/:id', array('controller' => 'news', 'action' => 'view')); $router->addRoute('postArchive', $route); } This method is in my Zend_Application_Bootstrap_Bootstrap and is definitely run. The route is also applied in $router. As I see it I could be doing two things wrong - either the wrong place to add these routes, or not adding to the correct router. Can anyone point me in the right direction with this?

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  • Updating XML using attribute to identify value in SQL server

    - by Tadhg
    I have a XML structure in a XML column on a SQL Server table as follows: <Customizations> <Customization name="OtherValue"> <value>Test</value> </Customization> . . . . <Customization name="Year"> <value>2009</value> </Customization> </Customizations> and I'm looking to update the value of Customization with the element with the attribute Year. Been looking at this for a while and best attempt is: UPDATE TestTable SET XmlColumn.modify( ' replace value of (/Customizations/Customization/@name[.="Year"]/value)[1] with ( "2010" ) ') Can someone help point out where I'm going wrong?

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  • Java multidimensional array and scanner novice Q

    - by Max
    I'm new to Java and trying to in essence implement a grid with a character, and if the user inputs 'w' 'a' 's' or 'd' the character moves up/down/left/right within the plane. I created a multidimensional array sized 10x10 public static String[][] grid = new String[10][10]; And then just used a for loop to print "*"s in a 10x10 grid, except for grid[a][b] which is equal to character "A" i.e. my thing to be moved around. That seemed to work alright, then I needed to detect the 'wasd' input from the user so I set up a: Scanner in = new Scanner (System.in); while (in.hasNext()) And I had then: String s = in.next(); char ch = s.charAt(0); switch (ch) but I couldn't make this work, and it wasn't because I didn't complete the "switch" statement, I did, I just see it void copying and pasting the entire thing. I'm sure its incredibly easy slight thing I am missing, can you please point it out for me?

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  • centering ul so that columns will be centered too

    - by user1815176
    In my page I want it so that when you resize the page past the point of the pictures, that the pictures will go into another row, all the way so each picture has it's own row. And then potentially I won't need any media queries. But unfortunaltely I can't find a way to center. I have tried everything I can think of, aside of making hundreds of media queries with different positioning. I can't make it a block because then it won't go into rows, I have tried margin: 0 auto;. I have tried changing the padding, I have even tried using the html align="center". Nothing is working. Here is the website http://spencedesign.netau.net/singaporehome.html Also I have a minor issue, sorry to croud this with two questions. But when it is in it's mobile state, there is no 10px padding at the bottom, and the singapore title is on the left side rather than floating. Here is my code <html> <head> <title> Singapore - Home </title> <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" /> <meta name="viewport" content="width=device-width, initial scale=1.0"> <style> * { margin: 0; padding: 0; } body { background: url('woodbackground.jpg'); background-size: cover; min-height: 100%; min-width: 100%; position: relative; top: 0; bottom: 0; left: 0; right: 0; } #container { width: 90%; margin: 0 auto; } h1 { font: bold 65px Helvetica, Arial, Sans-serif; text-align: center; color: #eee; position: relative; top: 60px; } h3 { font: 25px Helvetica, Arial, Sans-serif; text-align: center; color: #eee; position: relative; top: 80px; } ul#gallery { list-style: none; display: inline; margin: 0 auto; position: relative; top: 175px; width: 1300px; } ul#gallery li a { float: left; padding: 10px 10px 25px 10px; background-color: #eee; border: 1px solid #fff; -moz-box-shadow: 0px 2px 15px #333; position: relative; margin: 10px; text-decoration: none; } ul#gallery li a:hover { position: relative; top: -15px; } ul#gallery li a img { height: 150px; width: 250px; max-width: 100%; } ul#gallery li a p { margin-top: 25px; text-align: center; color: #000; font: Helvetica, Arial, Sans-serif; text-decoration: none; font-size: 20px; } @media screen and (max-width: 640px)    { ul#gallery {   left: 2.2%;   width: 600px; }   ul#gallery li a:hover {   top: 0px; } } </style> <body> <div id="container"> <h1> Singapore </h1> <h3><i> Singapore is the worlds first machine that works </i>- Lee Kuan Yew </h3> <ul id="gallery"> <li><a href="#"> <img src="gallery.jpg" alt="gallery" /> <p> Gallery </p> </a></li> <li><a href="#"> <img src="facts.jpg" alt="facts" /> <p> Facts </p></a></li> <li><a href="#"> <img src="tour.jpg" alt="tour" /> <p> Tour </p></a></li> <li><a href="#"> <img src="author.jpg" alt="author" /> <p> Author </p> </a></li> </ul> <br/> </div><!-- Container --> </body> <html> Thanks!

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  • Why it is necessary to put comments on check-ins? [closed]

    - by Mik Kardash
    In fact, I always have something to put in when I perform a check-in of my code. However, the question I have is - Is it really so necessary? Does it help so much? How? From one point of view, comments can help you to keep track of changes performed with every check-in. Thus, I will be able to analyze the changes and identify a hypothetic problem a little bit quicker. On the other hand, it takes some time to write useful information into check-in. Is it worth it? What are the pros and cons of writing comments to every check-in? Is there any way to write "efficient" check-in comments?

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  • Is SHA sufficient for checking file duplication? (sha1_file in PHP)

    - by wag2639
    Suppose you wanted to make a file hosting site for people to upload their files and send a link to their friends to retrieve it later and you want to insure files are duplicated where we store them, is PHP's sha1_file good enough for the task? Is there any reason to not use md5_file instead? For the frontend, it'll be obscured using the original file name store in a database but some additional concerns would be if this would reveal anything about the original poster. Does a file inherit any meta information with it like last modified or who posted it or is this stuff based in the file system? Also, is using a salt frivolous since security in regards of rainbow table attack mean nothing to this and the hash could later be used as a checksum? One last thing, scalability? initially, it's only going to be used for small files a couple of megs big but eventually... Edit 1: The point of the hash is primarily to avoid file duplication, not to create obscurity.

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  • Setting a preferred item of a many-to-one in Django

    - by Mike DeSimone
    I'm trying to create a Django model that handles the following: An Item can have several Names. One of the Names for an Item is its primary Name, i.e. the Name displayed given an Item. (The model names were changed to protect the innocent.) The models.py I've got looks like: class Item(models.Model): primaryName = models.OneToOneField("Name", verbose_name="Primary Name", related_name="_unused") def __unicode__(self): return self.primaryName.name class Name(models.Model): item = models.ForeignKey(Item) name = models.CharField(max_length=32, unique=True) def __unicode__(self): return self.name class Meta: ordering = [ 'name' ] The admin.py looks like: class NameInline(admin.TabularInline): model = Name class ItemAdmin(admin.ModelAdmin): inlines = [ NameInline ] admin.site.register(Item, ItemAdmin) It looks like the database schema is working fine, but I'm having trouble with the admin, so I'm not sure of anything at this point. My main questions are: How do I explain to the admin that primaryName needs to be one of the Names of the item being edited? Is there a way to automatically set primaryName to the first Name found, if primaryName is not set, since I'm using inline admin for the names?

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  • SOLVED - UBIFS partition mounting at startup [closed]

    - by Bartlomiej Grzeskowiak
    [SOLVED] - add ubi.mtd=volume_name to bootargs in uboot I want to mount UBIFS partition via /etc/fstab at startup. I created UBIFS and Volume: # ubiformat /dev/mtdX # ubiattach -p /dev/mtdX # ubimkvol /dev/ubi0 -N volume_name -s 64MiB # ubiupdatevol /dev/ubi0_0 /path/to/ubifs.img # mount -t ubifs ubi0:volume_name /mount/point but after reboot this line in etc/fstab doesn't work: ubi0:volume_name /mnt/user ubifs defaults 0 0 There is no fs mounted in /mnt/user. Also when I try to call mount -a: mount: mounting ubi0:volume_name on /mnt/user failed: No such device There are no ubi0,ubi0_0 in /dev. I also don't see any UBI calls in dmesg like here: UBIFS boot error

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  • In a Linux user space process what is the address of the vsyscall page?

    - by TomMD
    I would like to acquire the address of the vsyscall page for my own uses. I only have two ideas here: alter the compiler to store this information in some known location after it is given to __start, or read /proc/[pid]/maps. I really don't want to read /proc/ as that is slow and shouldn't be necessary. I also don't want to make compiler modifications. Does anyone have an alternative? Is there a symbol I should know about? Its at the point I'm tempted to stuff this functionality into an ioctl call in a module I've developed as part of this work!

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  • What is the precision of the priority field in sitemap.xml?

    - by Christoph
    Unfortunately the specification does not tell anything about precision. The xml scheme definition states that it is of the type xsd:decimal: <xsd:restriction base="xsd:decimal"> <xsd:minInclusive value="0.0"/> <xsd:maxInclusive value="1.0"/> </xsd:restriction> I have a sitemap generator that uses up to 10 positions after decimal point. Where often only the last few positions differ. These numbers are perfectly right according to the xsd, but yet i found some pages(3,4) that state that only 0.0, 0.1, 0.2, .., 1.0 are valid values. How will the search engines react to such a sitemap? Will some just round the value? I know that it is unlikely that someone can provide an answer to that question, unless he works for that search engine, but i think experiences will also do.

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  • Force Decimal Regex

    - by babyangel86
    Hi, I'm looking for a regex or a way to format the NumberValidator so that only decimal places are allowed. The domain="real" allows you to put integer values, but I need to force the user to but in 2.0 if they want an integer. This is because they pass through a Castor mapping file, it complains if it gets an integer when it expects a decimal. I dont want to restrict the number of decimal places, just insist that there must be a point, and a number after it. Any help would be much appreciated.

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  • Drawing rubber band line during user drag

    - by Pete W
    In my iPhone app, I would like the user to be able to "connect" two of my views by: 1) starting a drag in View A 2) as they drag towards View B, a straight line with one end in View A and the other end under at the current drag point, animates in a rubber-band fashion 3) when/if they release in View B, the line is then shown between the two views I've seen examples of dragging and dropping views, and other examples of animations, but I haven't seen one that is a simple example of this kind of user-directed animation. Any pointers towards examples or the specific docs I should be looking at would be appreciated. If this turns out to be trivial - my apologies. Although I've done quite a bit of development, I'm just getting started in the iPhone SDK and Core Graphics.

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  • How to end a thread in java?

    - by beagleguy
    hi all, I have 2 pools of threads ioThreads = (ThreadPoolExecutor)Executors.newCachedThreadPool(); cpuThreads = (ThreadPoolExecutor)Executors.newFixedThreadPool(numCpus); I have a simple web crawler that I want to create an iothread, pass it a url, it will then fetch the url and pass the contents over to a cpuThread to be processed and the ioThread will then fetch another url, etc... At some point the IO thread will not have any new pages to crawl and I want to update my database that this session is complete. How can I best tell when the threads are all done processing and the program can be ended?

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  • Can't run the ActionBarCompat sample

    - by David Miler
    I am having trouble compiling and running the ActionBarCompat sample of Android 16. I have API level 16 as the build target selected, which seems to build fine, but when I try to debug these errors pop up. Of course I could change the min API level in the manifest, but what would be the point of that? I have made no changes to the sample, so how come it is not working properly? Class requires API level 14 (current min is 3): android.view.ActionProvider SimpleMenuItem.java /ActionBarCompat/src/com/example/android/actionbarcompat line 129 Android Lint Problem Class requires API level 14 (current min is 3): android.view.ActionProvider SimpleMenuItem.java /ActionBarCompat/src/com/example/android/actionbarcompat line 134 Android Lint Problem Class requires API level 14 (current min is 3): android.view.MenuItem.OnActionExpandListener SimpleMenuItem.java /ActionBarCompat/src/com/example/android/actionbarcompat line 155 Android Lint Problem I am thoroughly confused, any help would be appreciated.

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  • C++ USB Programming

    - by JB_SO
    Hi, I am new to hardware programming(especially USB) so please bear with me and my questions. I am using C++ and I need to send/receive some data (a byte array) to/from a USB port on a microprocessor board. Now, I have done some serial port programming before and I know that for a serial port you have to open a port, setup, perform i/o and finally close the port. I am guessing to use a USB port, it is not as simple as what I mentioned above. I do know that I want to use Microsoft standard drivers and implement standard Windows IO commands to accomplish this, since I believe there are no drivers for the microprocessor board for me to interact with. If somebody can point me in the right direction as to the steps needed to "talk" to a USB port (open, setup, i/o) via standard Windows IO commands, I would truly and greatly appreciate it. Thanks you so much!!

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  • Override Django inlineformset_factory has_changed() to always return True

    - by John
    Hi, I am using the django inlineformset_factory function. a = get_object_or_404(ModelA, pk=id) FormSet = inlineformset_factory(ModelA, ModelB) if request.method == 'POST': metaform = FormSet (instance=a, data=request.POST) if metaform.is_valid(): f = metaform.save(commit=False) for instance in f: instance.updated_by = request.user instance.save() else: metaform = FormSet(instance=a) return render_to_response('nodes/form.html', {'form':metaform}) What is happening is that if I change any of the data then everything works ok and all the data gets updated. However if I don't change any of the data then the data is not updated. i.e. only entries which are changed go through the for loop to be saved. I guess this makes sense as there is no point saving data if it has not changed. However I need to go through and save every object in the form regardless of whether it has any changes on not. So my question is how do I override this so that it goes through and saves every record whether it has any changes or not? Hope this makes sense Thanks

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  • C++ streams question (explanation of comment in code)

    - by skyeagle
    I am playing around with the fastCGI application found here. The following comment is in the code: if (content) delete []content; // If the output streambufs had non-zero bufsizes and // were constructed outside of the accept loop (i.e. // their destructor won't be called here), they would // have to be flushed here. My knowledge of C++ streams is rather weak. Could someone please explain the following: which streambufs are being referred to in the comment? under what conditions would the streambufs had non-zero bufsizes? last but not the least, can someone point to a resource (pun intended) online that provides a clear but gentle introduction to C++ IO streams?

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