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• css to crop an image instead of stretching it

  - by amit

  i am taking an image from a source, say, facebook. now when i want to insert that image in a container with fixed width and height, the image stretches to fit that space. is there a way the image can display in its normal size and the rest of the area clipped out?

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• Regular Expression

  - by Malcolm

  I want regular expression that checks that the string doesnt start with an empty space. Some what like this i want to do : Is the below ValidationExpression right for it : string ValidationExpression = @"/^[^ ]/"; if (!String.IsNullOrEmpty(GroupName) && !Regex.IsMatch(GroupName, ValidationExpression)) { }

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• Export symbol as png

  - by Etiennebr

  I'd like to export plotting symbols form R as a png graphic. But I haven't found a perfect way yet. Using png("symbol.png",width=20, height=20, bg="transparent") par(mar=c(0,0,0,0)) plot.new() symbols(1, 1, circles=0.3, bg=2, inches=FALSE, lwd=2, bty="n") dev.off() creates a little border around the symbol (I'd like it to be transparent) and the symbol isn't filling the whole space. Is there a more specific way of doing this ?

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• numerical computation locks up ruby

  - by kolosy

  i'm trying to implement an id obfuscation scheme, with a simple hash borrowed elsewhere. i've added a method on the application helper: @@M_ID = 2**31-1 @@PRIME = 1580030173 @@PRIME_INVERSE = 59260789 # (calculated from MAXID and PRIME offline) def obfuscate_id(x) if x return ((x * @@PRIME) & @@M_ID) else x end end for some reason, whenever this is called, ruby locks up, and starts eating up disk space on my mac... like - gigs of it. any ideas?

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• Change size of a custom page in Inno Setup

  - by Paja

  The following image shows the size of a standard custom page: I've intentionally removed the panel on top, where you usually see Caption, Description and Logo. So you can see that the actual size of the page is quite small - there are gaps on top, left and right sides. Is there any way to resize the page, so there are no gaps? I want the image to take the whole space. I create the page using CreateCustomPage function.

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• read length of string from stdin

  - by teoz

  I want to take a string from stdin but I don't want a static array of fixed size I know that scanf need something where save the stdin input, but I can't do something like this: char string[10] scanf("%s",string); becouse I need to know before how long will be the string in order to allocate the right memory space. Can you help me to resolve this problem?

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• ASP.NET Checkboxes/RadioLists Arrow Keys

  - by rlb.usa

  I have an ASP.NET web application for data entry, and we have big lists of radiobuttons, and long lists of checkboxes, in some sections. The client wants to be able to be able to navigate and manipulate these controls with their keyboard, like the tab/space/enter/right-left-up-down-arrow-keys. Are there any ASP.NET controls that I can use?

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• Regular expression help

  - by moustafa

  in twitter when you write @moustafa will change to <a href='user/moustafa'>@moustafa</a> now i want make the same thing when write @moustafa + space its change @moustafa only

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• How do I write a Oracle SQl query for this tricky question...

  - by atrueguy

  Here is the table data with the column name as Ships. +--------------+ Ships | +--------------+ Duke of north | ---------------+ Prince of Wales| ---------------+ Baltic | ---------------+ In the Outcomes table, transform names of the ships containing more than one space, as follows: Replace all characters between the first and the last spaces (excluding these spaces) by symbols of an asterisk (*). The number of asterisks must be equal to number

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• finding and returning a string with a specified prefix

  - by tipu

  I am close but I am not sure what to do with the restuling match object. If I do p = re.search('[/@.* /]', str) I'll get any words that start with @ and end up with a space. This is what I want. However this returns a Match object that I dont' know what to do with. What's the most computationally efficient way of finding and returning a string which is prefixed with a @? For example, "Hi there @guy" After doing the proper calculations, I would be returned guy

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• Convolve a column vector

  - by Geoff

  This is an OpenCV2 question. I have a matrix: cv::Mat_<Point3f> points; representing some space curve. I want to smooth it (using, for example a Gaussian kernel). I have tried using: cv::Mat_<Point3f> result; cv::GaussianBlur(points, result, cv::Size(4 * sigma, 1), sigma, sigma, cv::BORDER_WRAP); But I get the error: Assertion failed (columnBorderType != BORDER_WRAP)

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• How do you return stolen packets back to Netfilter

  - by meg18019

  Let's say I have intercepted a packet from Netfilter and subsequently returned NF_STOLEN. At some point I want to re-inject that packet back to, in this case, the TCP stream it came from. I want to do this from Kernel space. So far I have been unable to find a way to do this. Thanks for the help.

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• app engine modify xml

  - by Hoax

  Hi I am writing a GWT app running on App Engine, which needs to modify a XML File serverside. As far as I know there is no way to modify a XML file in the WAR directory or any subdirectories. What other possibilities do I have to store that data? Can I use the Data Store somehow or should I look for storage space somewhere else and access it there (if so any recommendations?)? Any help is appreciated!

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• Seprating binary encryption data

  - by lnk1347

  Does a binary encrypted string could contain a 'space' or 'carriage return'? What's the best way to put a separator between two encrypted byte[] arrays?

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• What is the total amount of public IPv4 addresses?

  - by Earlz

  Yes, I am needing to know what the total number possible IPs in the public IPv4 space. I'm not sure where to even get a neat list of all the IP address ranges, so could someone point me to a resource to calculate this myself or calculate the total number of IPs for me? Also, by Public IPs I mean not counting reserved or private-range IP addresses.. Only the ones that can be access through the internet.

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• What's the best way to draw a fullscreen quad in OpenGL 3.2?

  - by Phineas

  I'm doing ray casting in the fragment shader. I can think of a couple ways to draw a fullscreen quad for this purpose. Either draw a quad in clip space with the projection matrix set to the identity matrix, or use the geometry shader to turn a point into a triangle strip. The former uses immediate mode, deprecated in OpenGL 3.2. The latter I use out of novelty, but it still uses immediate mode to draw a point.

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• Implementing a hilbert map of the internet

  - by Martin

  In the XKCD comic 195 a design for a map of the internet address space is suggested using a hilbert curve so that items from a similar IPs will be clustered together. Given an IP address, how would I calculate the 2D coordinates (in the range zero to one) that this IP is located on such a map?

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• Given a 1TB data set on disk with around 1KB per data record, how can I find duplicates using 512MB

  - by user288609

  There is 1TB data on a disk with around 1KB per data record. How to find duplicates using 512MB RAM and infinite disk space?

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• writing to an ioport resulting in segfaults...

  - by Sniperchild

  I'm writing for an atmel at91sam9260 arm 9 cored single board computer [glomation gesbc9260] Using request_mem_region(0xFFFFFC00,0x100,"name"); //port range runs from fc00 to fcff that works fine and shows up in /proc/iomem then i try to write to the last bit of the port at fc20 with writel(0x1, 0xFFFFFC20); and i segfault...specifically "unable to handle kernel paging request at virtual address fffffc20. I'm of the mind that i'm not allocating the right memory space... any helpful insight would be great...

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• Getting line by line in Apple Script from Address Books Note Field

  - by Axwack

  I have two lines in my address book's note field Test 1 Test 2 I would like to get each line as a separate value or get the last line from the notes field. I tried doing it this way: tell application "Address Book" set AppleScript's text item delimiters to "space" get the note of person in group "Test Group" end tell but the result is {"Test 1 Test 2"} I'm looking for : {"Test1","Test2"} What am I doing incorrect?

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• Dynamic memory managment under Linux

  - by petersohn

  I know that under Windows, there are API functions like global_alloc() and such, which allocate memory, and return a handle, then this handle can be locked and a pointer returned, then unlocked again. When unlocked, the system can move this piece of memory around when it runs low on space, optimising memory usage. My question is that is there something similar under Linux, and if not, how does Linux optimize its memory usage?

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• How does the garbage collector determine whether an object is garbage?

  - by n0vic3c0d3r

  How does the garbage collector determine whether an object is garbage? Does it refer to the stack to check the references to the space allocated in the heap?

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• (C) how does a heap allocator handle a 4-byte block header, while only returning addresses that are

  - by hatorade

  It doesn't seem to make sense, unless we just ignore any potential excess space at the beginning of a segment, and then have the first allocated chunk be at the first multiple of 8 (with its corresponding first header being that address -4). This would leave however many bytes before that unused. Is that what's generally done?

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• Using CreateOrthographicOffCenter in XNA

  - by Jeffrey Kern

  I'm trying to figure out how to draw graphics in XNA, and someone else suggested this. But before I attempt to use this... If I create and use this camera, and set LEFT,TOP to 0 and WIDTH=256 and HEIGHT=240, anything I render to the screen will use these coordinates? So a box with a width and height of 1, if set to 0,0 will take up space from 0,0 to 1,1?

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• How to turn string into readable by php server way? (ActionScript)

  - by Ole Jak

  So I know that my server on real form submit turns %CE%EB%E5%E3+%DF%EA%F3%F8%EA%E8%ED into ???? ??????? . How to peform string transfer from ???? ??????? into %CE%EB%E5%E3+%DF%EA%F3%F8%EA%E8%ED using ActionScript? (Its ok if a space character as %20, not + , PHP should handle that fine.)

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