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• What data type to use for variable length data (for performance)?

  - by jiewmeng

  What data type should I use for data that can be very short, eg. html link (think twitter), or very long eg. html blog post (think wordpress). I am thinking if I use varchar(4000), it maybe too short for a html formated blog entry? but if I use text, it will take up more space and is less efficient?

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• eliminating multiple occurrences of whitespace in a string in python

  - by tipu

  If I have a string "this is a string" How can I shorten it so that I only have one space between the words rather than multiple? (The number of white spaces is random) "this is a string"

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• Deleting document attachments in CouchDb

  - by henrik_lundgren

  In CouchDb's documentation, the described method of deleting document attachments is to send a DELETE call to the attachment's url. However, I have noticed that if you edit the document and remove the attachment stub from the _attachment field, it will not be accessible anymore. If i remove foo.txt from the document below and save to CouchDb it will be gone the next time I access the document: { "_id":"attachment_doc", "_rev":1589456116, "_attachments": { "foo.txt": { "stub":true, "content_type":"text/plain", "length":29 } } } Is the attachment actually deleted on disk or is just the reference to it deleted?

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• Is there any small linux distribution which comes with a complete C devleopment environment

  - by hits_lucky

  Hi, I have installed "Damn Small Linux" on my home computer for doing C development in unix. But the distribution doesn't by default come with the C development environment and I am facing some issues when trying to install the gcc. Is there any other small Linux distribution which by default has the required packages for the C development. And also I don't want additional software which takes up lot of space but still would like to have the graphical environment. Thanks

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• How do I keep website footer on bottom of the window?

  - by taw

  Coding footer naively, if there's not enough content, then there will be empty space between footer and bottom of page. I would like to get rid of this and move footer to the bottom of the window. On the other hand when there is more content, I want the content to push the footer down (so position: fixed; bottom: 0; won't do). How do I achieve this?

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• WPF: Canvas Events Not working

  - by user279244

  Hi I have set Mouse Events on a canvas as follows MouseUp="CanvasUp" MouseDown="CanvasDown" MouseMove="CanvasMove" But these are active only on the child elements like Images and Rectangles, but not on the empty space. Please tell me how to solve Thanks

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• prevent listview to lose selected item

  - by gad83

  Hi, I'm currently working on a listview in winform c# and everytime I click on an empty space on the listview, the selected item is lost. please help ed

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• Question about fwrite API

  - by michael

  Hi, In C++, there is a fwrite() which writes a buffer to a file on disk: http://www.cplusplus.com/reference/clibrary/cstdio/fwrite/ Can you please tell me if there is any buffer inside that fwrite implementation? i.e. if I call fwrite() multiple times (say 10 times), does it actually invoke file i/o 10 different times? Thank you.

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• What is a good metaphor for c memory management?

  - by fsmc

  I'm trying to find a good metaphor to explain memory allocation, initialization and freeing in c to a non technical audience. I've heard pass-by-reference/value talked about quite well with postal service usage, but not so much for allocation/deallocation. So for I've thought about using the idea of renting a space might work, but I wonder if the SO crew can provide something better.

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• How do I perform multiple replacements with Perl?

  - by duenguyen

  I have Perl code: my $s = "The+quick+brown+fox+jumps+over+the+lazy+dog+that+is+my+dog"; I want to replace every + with space and dog with cat. I have this regular expression: $s =~ s/\+(.*)dog/ ${1}cat/g; But, it only matches the first occurrence of + and last dog.

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• How should i center my page?

  - by acidzombie24

  I have two parts to my site. The main body and the sidebar. The body is 6in and sidebar will probably be 200px. How do i center my page? So there is equal space on the left and right side? It should center no matter the resolution. Using XHTML 1.0 Strict. Should work on all major browsers or at least Firefox and chrome.

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• Supporting twitter-like user page urls with apache/php?

  - by user246114

  Hi, I'm using php on apache with mysql. I want to let users enter a url into their browser to see a custom user page for themselves, just like twitter does. For example, they could enter urls like: www.mysite.com/johndoe www.mysite.com/janedoe and see that user's page. How could I do this with php and apache? I don't want to create a folder on disk for every user like above, I'd instead kind of like to catch the url and generate the page on the fly for them, Thanks

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• ASP print xml formatted string

  - by Primetime

  I have: tXML = "<type p_type=\"All\"/>"; if I do Response.Write(tXML); I get a blank space. Is there anyway to output this string so I know it is being created?

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• How can I send images to x264 one by one?

  - by Ole Jak

  I've got an image generator written in C. Now I want to pass those images to x264 to encode them and write it to a file. Every 100th image should be a key frame in order to save the video to disk every 100th frame. The image generator calls onImageGenerated() after each image. I'd appreciate any pointers on how to set up x264 in this way.

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• Integer separated by comma

  - by FrenchiInLa

  What's the best regular expression for integer separated by comma? It can also contain space between comma, and the field is not required which means it could be blank. 123,98549 43446 etc..

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• How to convert the amount of indentation in a source code file?

  - by toby

  I find that I now often work with code bases that have different amounts of indentation. Some use 2 spaces, some use 4 space, some even use tabs! Once in a while, I have to share code between these codebases, or, sometimes I use an incorrect amount of indentation by mistake. Is there a tool or a text editor feature that will convert between different amounts of indentation?

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• Building an AIR application with ANT

  - by jonbcampos

  I keep getting "Java Heap Space" error. What is the JVM Memory requirements to build AIR apps with ant?

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• why tempspace results here??

  - by SubPortal

  if we supposed that "A.B." is a value for an xml element called given-names the following code converts this value to "A.tempspacetempspaceB." instead of "A. B." foreach (XElement initial in doc.XPathSelectElements("//given-names")) { string v = initial.Value.Replace(".", ". ").TrimEnd(' '); initial.SetValue(v); } So why tempspace comes here instead of literal space?? thank you for any help.

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• jQuery and HTML visual glitches on table cell .toggle

  - by Forkrul Assail

  I have table that gets dynamically created. When using jQuery and toggle, everything works. I however get a small visual glitch - it seems the HTML sometimes get selected. How would I disable this on a faulty drag or mouse operation? Is there a difference in the DOM between text in a cell and 'not text' or buffered space in a td? Thanks in advance.

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• Expanding Java Memory-Mapped Byte Buffer

  - by geeko

  Greetings All, Is there a way to expand the Java memory-mapped byte buffer such that the new size is reflected back to the mapped file on disk ? Thank you !

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• orderered list in ie7 not spacing on two digit numbers

  - by kevin

  I have an ordered list in ie7 and the list-style-type decimal is not allowing space on two digit numbers E.G 1. blah blah, blah 12.blah, blah, blah anyone know of a answer?

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• How to swap out a memory block?

  - by ctinnist

  How to make a block of memory allocated by malloc() or new: - immediately swapped out, - or lazily initialized. In fact, I'm trying to reserve an address space. How to accomplish this?

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• snmp and platform specific information

  - by reza

  I need to come with a strategy to use gather information about the health of my linux platform, hardware health such as high CPU temperature and may be disk space usage, etc... I know my examples are not very good ones. Essentially, I have an SNMP agent running on Linux and I need it to provide platform specific health and state information. Are there any Linux packages that do this, what MIBs to use, Dell Open Manager functionality??? Any thoughts and comments are appreciated.

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• What does CPU Time consist of? [closed]

  - by Sid

  What does CPU time exactly consist of? For instance, is the time taken to access a page from the RAM (at which point, the CPU is most likely idling) part of the CPU time? I'm not talking about fetching the page from the disk here, just fetching it from the RAM. Thanks

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• Euler rotation of direction vector

  - by Tom Savage

  I have defined an object in 3D space with position, rotation and scale values (all defined as 3D vectors). It also has upwards and forwards direction vectors. When I rotate the object, I need these direction vectors to rotate with it. Assuming my up vector is (0, 1, 0) and my forwards vector is (0, 0, 1) at zero rotation, how might I achieve this?

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