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• Weird Scrolling Issue Using UITableView

  - by Scott Elder

  I am a working UINavigationController pushing two different UITableViews on and off the stack. All of my functionality is working correctly except scrolling. When either table is scrolled above the top row, or below the bottom row, it stays there exposing the margin above/below the table. I am looking for the table to "bounce" back so that only the table is visible and not the white space area beyond - just like any other iPhone app. One of my UITableViews is being loaded by NIB and the other is being created programatically - both of which have the exact same result. I have tried all the bounce and scrolling settings in the Nib, but nothing seems to work. Can someone tell me what I am doing wrong? Please let me know if I can be more specific in detailing my problem. Thanks, -Scott

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• Is their an optimal config/format for a TIFF when using Tesseract or other OCR?

  - by Zando

  I'm having a bizarre problem with Tesseract. I have a name, "Janice" that is in a 200x40 pixel tiff, that Tesseract interprets as a blank. I'm running hundreds of names through Tesseract and they are processed fine. What I'm actually doing, though, is breaking up a larger TIFF into smaller tiffs of one word each. In the larger TIFF, tesseract recognizes "Janice". What could cause it to hiccup in a TIFF that solely contains that word (and there's enough space around the word to not truncate any of the pixels)? I'm using ImageMagick to split the big TIFF, are there options I should set when reconstituting the new TIFF files?

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• Do not show partial items in a WPF listbox

  - by David Martin

  I've tried Google and I've tried Bing to no avail. Does anyone here have an idea on how to prevent partial items from appearing in a listbox in WPF? In case that does not make sense here is an example: Listbox is 200 pixels tall - each item is 35 pixels tall. That means I can show 5.7 items. 7/10 of an item is undesirable. I'd like to limit it to showing only 5 items. The user could then scroll to see the additional items. Should I A) try to dynamically size the listbox or ScrollViewer ViewPort so that it fits perfectly? Or B) implement a custom panel that would not arrange a child whose desired height is more than the remaining vertical space? Any thoughts would be greatly appreciated. Last note: If anyone knows of a 3rd party control (listbox or grid) that does this I would be interested in that as well.

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• Import a Collada model doesn't align to pixels

  - by Dan Friedman

  Assume I have a model that is simply a cube. (It is more complicated than a cube, but for the purposes of this discussion, we will simplify.) So when I am in Sketchup, the cube is Xmm by Xmm by Xmm, where X is an integer. I then export the a Collada file and subsequently load that into threejs. Now if I look at the geometry bounding box, the values are floats, not integers. So now assume I am putting cubes next to each other with a small space in between say 1 pixel. Because screens can't draw half pixels, sometimes I see one pixel and sometimes I see two, which causes a lack of uniformity. I think I can resolve this satisfactorily if I can somehow get the imported model to have integer dimensions. I have full access to all parts of the model starting with Sketchup, so any point in the process is fair game. Is it possible? Thanks.

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• Allow single-line accessor (getter/setter) syntax with Checkstyle

  - by Sam3

  We'd like to have trivial Java property accessors using a single line syntax, so they take up much much less space, and are more readable (in terms of 'seeing' the set of accessors quickly). But we do want to enforce multi-line method syntax for everything else in our checkstyle configuration. But I'm not sure how to make this exception for accessors in Checkstyle config and suspect it may not be possible. So we'd like our accessors to look something like this: public String getFoo() { return foo; } public void setFoo(String foo) { this.foo = foo; } [In fact we'd rather not have trivial accessors at all and instead just annotate the private member variables with @Property or something and have the accessors generated for us, since writing endless get and set code delivers no real benefit, but that's a general Java frustration and an aside as far as this question goes.]

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• Python character count

  - by user74283

  I have been going over python tutorials in this resource. Everything is pretty clear in the below code which counts number of characters. Only section that i dont understand is the section where count assigned to a list and multiplied by 120. Can anyone explain what is the purpose of this in plain english please. def display(i): if i == 10: return 'LF' if i == 13: return 'CR' if i == 32: return 'SPACE' return chr(i) infile = open('alice_in_wonderland.txt', 'r') text = infile.read() infile.close() counts = 128 * [0] for letter in text: counts[ord(letter)] += 1 outfile = open('alice_counts.dat', 'w') outfile.write("%-12s%s\n" % ("Character", "Count")) outfile.write("=================\n") for i in range(len(counts)): if counts[i]: outfile.write("%-12s%d\n" % (display(i), counts[i])) outfile.close()

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• scanf("%d", char*) - char-as-int format string?

  - by SF.

  What is the format string modifier for char-as-number? I want to read in a number never exceeding 255 (actually much less) into an unsigned char type variable using sscanf. Using the typical char source[] = "x32"; char separator; unsigned char dest; int len; len = sscanf(source,"%c%d",&separator,&dest); // validate and proceed... I'm getting the expected warning: argument 4 of sscanf is type char*, int* expected. As I understand the specs, there is no modifier for char (like %sd for short, or %lld for 64-bit long) is it dangerous? (will overflow just overflow (roll-over) the variable or will it write outside the allocated space?) is there a prettier way to achieve that than allocating a temporary int variable? ...or would you suggest an entirely different approach altogether?

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• GWT vertical layout

  - by skrat

  I need a vertical layout, which would fill browser's viewport top to bottom, with on overflow (scrollbars). I need to layout widgets on the top, and on the bottom, and have one widget in the center which would stretch to fill the remaining space. There seems to be DockLayoutPanel for this purpose, the problem with it is that it forces me to specify widget sizes, and I don't know the sizes of the top/bottom widgets before the browser does it's layouting job, which is tricky (buggy) to track. I cannot find the right moment when to measure my widgets, and I don't want to do this kind of layouting code anyway.

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• Command line switches parsed out of executable's path

  - by Roger Pate

  Why do Windows programs parse command-line switches out of their executable's path? (The latter being what is commonly known as argv[0].) For example, xcopy: C:\Temp\foo>c:/windows/system32/xcopy.exe /f /r /i /d /y * ..\bar\ Invalid number of parameters C:\Temp\foo>c:\windows\system32\xcopy.exe /f /r /i /d /y * ..\bar\ C:\Temp\foo\blah -> C:\Temp\bar\blah 1 File(s) copied What behavior should I follow in my own programs? Are there many users that expect to type command-line switches without a space (e.g. program/? instead of program /?), and should I try to support this, or should I just report an error and exit immediately? What other caveats do I need to be aware of? (In addition to Anon.'s comment below that "debug/program" runs debug.exe from PATH even if "debug\program.exe" exists.)

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• GetDiskFreeSpaceEx reports wrong number of free bytes

  - by rboorgapally

  __int64 i64FreeBytes unsigned __int64 lpFreeBytesAvailableToCaller, lpTotalNumberOfBytes, lpTotalNumberOfFreeBytes; // variables used to obtain // the free space on the drive GetDiskFreeSpaceEx (Manager.capDir, (PULARGE_INTEGER)&lpFreeBytesAvailableToCaller, (PULARGE_INTEGER)&lpTotalNumberOfBytes, (PULARGE_INTEGER)&lpTotalNumberOfFreeBytes); i64FreeBytes = lpTotalNumberOfFreeBytes; _tprintf(_T ("Number of bytes free on the drive:%I64u \n"), lpTotalNumberOfFreeBytes); I am working on a data management routine which is a Windows CE command line application. The above code shows how I get the number of free bytes on a particular drive which contains the folder Manager.capdir (it is the variable containing the full path name of the directory). My question is, the number of free bytes reported by the above code (the _tprintf statement) doesn't match with the number of free bytes of the drive (which i check by doing a right click on the drive). I wish to know if the reason for this difference?

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• Sanitize Content: removing markup from Amazon's content

  - by StackOverflowNewbie

  I'm using Amazon Web Service to get product descriptions of various items. The problem is that Amazon's content contains mark up that is sometimes destructive to the layout of my web page (e.g. unclosed DIVs, etc.). I want to sanitize the content I get from Amazon. My solution would be to do the following (my initial list so far): Remove unnecessary tags such as div, span, etc. while keeping tags like p, ul, ol, etc. Remove all attributes from all the tags (e.g. seems like there are style attributes in some of the tags) Remove excess white space (e.g. multiple spaces, carriage returns, new lines, tabs, etc.) Etc. Before I go off trying to build my solution, I'm wondering if anyone has a better idea (or an already existing solution). Thanks.

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• C# Localization - unexpected behaviour

  - by vikp

  Hi, I have the following line of code: <%= Html.Label((string) GetLocalResourceObject("Label_Email")) %> This generates a label within an HTML page. In the local resource file I have the following entry: Name: Label_Email Value:Email For some very strange reason when I load the page in the browser, it generates an HTML label with a value of "Email Address" instead of "Email". This is a serious problem for me because I need to localize the application and not have english word "address". When I replace Value in the local resouce file with "Email " (notice extra space), everything works fine, but this is a hack and I need to understand why my application is behaving this way. Thank you

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• Random access gzip stream

  - by jkff

  I'd like to be able to do random access into a gzipped file. I can afford to do some preprocessing on it (say, build some kind of index), provided that the result of the preprocessing is much smaller than the file itself. Any advice? My thoughts were: Hack on an existing gzip implementation and serialize its decompressor state every, say, 1 megabyte of compressed data. Then to do random access, deserialize the decompressor state and read from the megabyte boundary. This seems hard, especially since I'm working with Java and I couldn't find a pure-java gzip implementation :( Re-compress the file in chunks of 1Mb and do same as above. This has the disadvantage of doubling the required disk space. Write a simple parser of the gzip format that doesn't do any decompressing and only detects and indexes block boundaries (if there even are any blocks: I haven't yet read the gzip format description)

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• Is it really wrong to version documents using CouchDB's default behaviour?

  - by Tomas Sedovic

  This is one of those "I know I shouldn't do this but it's oh so convenient." questions. Sorry about that. I plan to use CouchDB for storing a bunch of documents and keeping their entire revision history. CouchDB does the versioning automatically, but it is strongly discouraged for programmer's use: "You cannot rely on document revisions for any other purpose than concurrency control." From what I've found on the CouchDB wiki, the versions can get deleted either during compaction or during replication. As far as I can tell, Compaction must always be triggered manually and Replication occurs only when there's more than one database server. The question is: if I won't run compaction and will use only single database instance for my documents, can I just use CouchDB's document versioning and expect it to work? What other problems I might run into? E.g. does not running compaction hurt the performance or consume significantly more disk space (than if I did handle the versioning manually)?

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• Container fix width. Center div dynamic width. want left right divs to fill out remaining width equally

  - by james

  Have Three columns..Combine width of all three is fixed.. 2nd ( center ) column will have dynamic content.. I need left and right column to fill out remaining space ( container width - center column dynamic width )equally. Example: http://jsfiddle.net/htKje/ <div class="container"> <div class="bg"></div> <div>Lorem Ipsum</div> <div class="bg"></div> </div> CSS : .container { width:500px; } .bg {backgrould:#CCC; }

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• Why is memory management so visible in Java VM?

  - by Emil

  I'm playing around with writing some simple Spring-based web apps and deploying them to Tomcat. Almost immediately, I run into the need to customize the Tomcat's JVM settings with -XX:MaxPermSize (and -Xmx and -Xms); without this, the server easily runs out of PermGen space. Why is this such an issue for Java VMs compared to other garbage collected languages? Comparing counts of "tune X memory usage" for X in Java, Ruby, Perl and Python, shows that Java has easily an order of magnitude more hits in Google than the other languages combined. I'd also be interested in references to technical papers/blog-posts/etc explaining design choices behind JVM GC implementations, across different JVMs or compared to other interpreted language VMs (e.g. comparing Sun or IBM JVM to Parrot). Are there technical reasons why JVM users still have to deal with non-auto-tuning heap/permgen sizes?

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• iPhone/Android: How to Send Keystrokes To Laptop Over Wifi?

  - by Cirrostratus

  How can I best implement a system for send keystrokes/commands via an iPhone and/or Droid to a desktop or laptop computer via WiFi or bluetooth? There are apps for VLC, Keynote and other applications that do this, so I know it's possible but don't know what technology base to use. The implementation is probably different on Windows and OS X, but if they could be similar that'd be a big win. If VNC-type technology is used, that'd be fine but I only need to send key commands and mouse clicks—I don't need to be able to navigate the screen space.

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• Apache Prefork Configuration

  - by user1618606

  I'm newbie on VPS configuration. So, I've installed apache, php and mysql and now I need to know how to configure Prefork to optimize Apache. The system configuration is: CPU Cores 2 x 2 Ghz @ 4 Ghz RAM Memory 2304 MB DDR3 Burst Memory 3 GB DDR3 Disk Space 30 GB SSD Bandwidth 3 TB SwitchPort 1 Gbps Actually, after linux, mysql, apache and php, there are 250 MB memory in use. Well, I don't have idea to calculate. I saw in some websistes, some vars like: KeepAlive On KeepAliveTimeout 1 MaxKeepAliveRequests 100 StartServers 15 MinSpareServers 15 MaxSpareServers 15 MaxClients 20 MaxRequestsPerChild 0 or StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 How I could to do: Prefork or worker? Where and how the vars are placed? In httpd.conf? Big hug, Claudio.

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• Why is this leaking memory? UIImage `cellForRowAtIndexPath:`

  - by Emil

  Hey. Instruments' Leaks tells me that this UIImage is leaking: UIImage *image = [[UIImage alloc] initWithContentsOfFile:[imagesPath stringByAppendingPathComponent:[NSString stringWithFormat:@"/%@.png", [postsArrayID objectAtIndex:indexPath.row]]]]; // If image contains anything, set cellImage to image. If image is empty, try one more time or use noImage.png, set in IB if (image != nil){ // If image != nil, set cellImage to that image cell.cellImage.image = image; } image = nil; [image release]; (class cell (custom table view cell) also releases cellImage in dealloc method). I haven't got a clue of why it's leaking, but it certainly is. The images gets loaded multiple times in a cellForRowAtIndexPath:-method. The first three cells' image does not leak (130px high, all the space avaliable). Leaks gives me no other info than that a UIImage allocated here in the code leaks. Can you help me figure it out? Thanks :)

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• weird characters in HTML email

  - by sims

  Hi stackers! I'm reading email from a maildir and some emails have weird sets of characters in them: =3D =09 I think =3D is = and =09 is a space. There are some others, but I'm not sure: =E2 =80 =93 Does anyone know what these are and what encoding issues I'm dealing with here? BTW, I tried fetching these email via POP3 and it's the same thing. The reason I'm posting this on SO is not because I'm using a regular mail client to read the data. I'm reading via PHP out of maildir files. Perhaps a regular email client would detect what encoding this is and deal with it. Thanks!

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• Turn a collection of headings, paragraphs and lists into one hyperlink

  - by Moak

  Is there a valid non js way to turn a collection of headings, paragraphs and lists into one url? (like in advertisements?) <a href="http://www.example.com" class="allclickable"> <h2>Fresh Bread</h2> <p>Delivered to your door</p> <ul> <li>Daily</li> <li>Fresh</li> <li>Bread</li> </ul> </a> This does not validate and I do want the href to be display as block element (so also the space around the text is clickable). Cheers

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• Jasper Sub reports not showing in main report

  - by BlackPanther

  I am having one jasper report.Inside of the that main report I am adding one sub report.I am passing collections and parameters using java class(Not using sql query directly).It is compiling successfully. But while running it shows only main report.It is not showing the sub report.And also it is not making any error. It is just giving some empty space for that place. Can any one tell me how to solve this? What are all the rules I have to follow while adding subreport in jasper?

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• Strange padding in Safari when using SVG images

  - by Naman Goel

  I thought I was having issues with margins but then on a closer look I found that SVGs are acting funky in Safari 6. I am building a simple Hexagon based website. Of course I used negative vertical margins to for a little overlap to 'inter-lock' the hexagons. And to save space I was using SVG images for the hexagons. It works great in chrome and firefox, but in Safari, there is a strange padding in the SVG images. I'm using simple img tags for the svg images. Everything works when I switch to PNG, but I'd prefer to stick to SVGs. Any insight? Can I perhaps delve into the SVG code and somehow fix the SVG problem in Safari? or is it some sort of bug, that I can do nothing about without browser sniffing?

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• Removing a character from a string

  - by Prasanth Madhavan

  i have a string. I want to delete the last character of the string if it is a space. i tried the following code, str.erase(remove_if(str.begin(), str.end(), isspace), str.end()); but my g++ compiler gives me an error saying: error: no matching function for call to ‘remove_if(__gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, <unresolved overloaded function type>)’ please help.

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• margin at the top that i dont want

  - by Luke

  For some reason, I am getting a gap at the top of the page. The html: <body> <div id="main"> <div id="topcontainer"> <div id="topmenu"> asdasdsa </div> </div> The css: body { background-color:#FFF; font-family:Arial, Helvetica, sans-serif; } #main { width: 1024px; margin: 0 auto 0 auto; } #topcontainer { height: 80px; } #topmenu { height:40px; background-image:url('../siteimages/topmenu.jpg'); } #secondmenu { height:40px; } There is just a small amount of white space at the top, any ideas?

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