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  • Hidden features of Ruby

    - by squadette
    Continuing the "Hidden features of ..." meme, let's share the lesser-known but useful features of Ruby programming language. Try to limit this discussion with core Ruby, without any Ruby on Rails stuff. See also: Hidden features of C# Hidden features of Java Hidden features of JavaScript Hidden features of Ruby on Rails (Please, just one hidden feature per answer.) Thank you

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  • How to increase mysql table comments length?

    - by opensas
    Seems like max table comments length in mysql is only 60 characters. I'm developing an aplicacion in php symfony, which automatically generates sql ddl sentences, and in many cases those comments are far beyond 60 characters. Is there some way to increase that limit? thanks a lot

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  • MySQL Query Help

    - by Andy
    I need to find the category id in the products table below. However the cms_ecom_categories.id is wrapped with the & character like &12&. Is there some kind of wild card i could use to wrap around? like %cms_ecom_categories.id% ? $sql = "SELECT * FROM cms_ecom_products, cms_ecom_categories WHERE cms_ecom_products.pCategories = cms_ecom_categories.id AND cms_ecom_categories.slug = ".$page.""; Thanks to all in advance who can help.

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  • iPhone GUI for real-time log message display

    - by zer0stimulus
    My goal is to have a screen on my GUI dedicated to logging real-time messages generated by my internal components. A certain limit will be set on the log messages so that older messages are pruned. I'm thinking about implementing using a UITextView with a NSMutableString to store the output. I would have to perform manual pruning somehow on the NSMutableString object. Is a better way to implement this?

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  • How does Wordpress link posts to categories in its database?

    - by bcmcfc
    At present I am displaying a list of the last 5 posts in a site's blog in its footer using this mysql query: SELECT post_title, guid, post_date FROM wp_posts WHERE post_type = 'post' AND post_status = 'Publish' ORDER BY post_date DESC LIMIT 5 How can I edit this query to restrict the search to a particular category id? I thought it would be as simple as looking for a category field in the posts table but it isn't!

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  • Rendering XML document with multiple languages

    - by bdhar
    I have an XML page with some elements in various languages - Arabic, English, Chinese, Japanese.. Which encoding format should I have to choose for that? If I try to render the XML with an XSL (using utf-8 or ISO-8859-6 or ISO-2022-JP), I get this error: An invalid character was found in text content. How shall or solve this? Thanks.

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  • C++ portable end of line

    - by Andrew
    Hi everyone, is there any way to automatically use correct EOL character depending on the OS used? I was thinking of something like std::eol? I know that it is very easy to use preprocessor directives but curious if that is already available.

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  • CVS to Mercurial conversion: end of line problem

    - by mizipzor
    I recently converted a CVS repository to Mercurial. From the looks of it, everything went perfect. Except that every end-of-line character is in Unix style and I want them in Windows style. I know the hg convert command can be used to "convert" a Mercurial repository to a Mercurial repository. Can I use it to do nothing on the repos but fix the line endings?

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  • app engine jpa N-way joins ?

    - by cometta
    may i know is the latest version of jgae support N-way joins? or still limit to 2-way join? reference: http://gae-java-persistence.blogspot.com/2010/03/executing-simple-joins-across-owned.html?showComment=1276491851890_AIe9_BEqp-CCn0bibiOUY8JUbbSFwFE02aF9d68baX0squIcfBnve8K3iIT3IEhPhpJxEBSZQLlz8tH-NMq1XGzOV0fAA8othN4f3zhR2B6xN0WzsTRpyEZJl2vPDonhVY38iUhJGe8Ot9URs3IjYk4HoH9LG41az7l0blTBNNnpJuyI-xl5CDJGoPLGk5jw4tLvtvsCYhq3n7XuiZwJIaBMWjHSDdy7-fB1NYszI0G4f9JRjZ5UdDM4at3o3tAhd-CYK2Af1dnG#c3679507832415682306

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  • ColdFusion Session Variables

    - by Faisal Abid
    Do the session variables in coldfusion expire or purge before the specified limit? Like say if the expiration is set to 24 hours, and the user only interacts with them for 10 minutes, do they expire if there not being used before the 24 hours?

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  • Backslash escaping in RegularExpressionValidator

    - by frogbot
    I need to ensure that the input value contains at least one dot, so i use the following: <asp:RegularExpressionValidator runat="server" ControlToValidate="MyInput" Text="*" ErrorMessage="must contain at least one dot" ValidationExpression="\.+" /> And that doesn't work. By inspecting the page source i can see that ASP.NET escapes the backslash character so in java-script it looks like "\\.+". Why does it do so and how do i prevent RegularExpressionValidator from escaping it?

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  • Regex matching wrong strings

    - by Joe Smalley
    I have this PHP/SQL query: $sql = sprintf("SELECT * FROM %sCubeCart_filemanager WHERE filepath REGEXP '%s[\\/\\\\][^\\/\\\\]+$' AND type = '%d' AND disabled = '0' ORDER BY filepath ASC %s", $this->_config['dbprefix'], str_replace(array('\\','/'),'.',$folder), $type, $limit); if '$folder' == 'iha9' it is finding results like 'iha91' and 'iha99' too. Something is wrong with the regular expression, but I don't know how they work, can anyone help?!

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  • Favorite Visual Studio keyboard remappings?

    - by hoytster
    Stack Overflow has covered favorite short-cuts and add-ins, optimizations and preferences -- great topics all. If this one has been covered, I can't find it -- so thanks in advance for the link. What are your favorite Visual Studio keyboard remappings? Mine are motivated by the fact that I'm a touch-typist. Mouse, function keys, arrow keys, Home, End -- bleh. These are commands I do all day every day, so I've remapped them to sequences I can execute without moving my hands from the home row. The command that is remapped in Tools = Customize = [Keyboard] is shown in parentheses. I'm 100% positive that there are better remappings than these, so please post yours! Please include the command; oft times, figuring it out is a challenge. -- Hoytster Running the app and operating the debugger Ctrl+Q + Ctrl+R Run the application, in debug mode (Debug.Start) Ctrl+Q + Ctrl+Q Quit (stop) the application (Debug.StopDebugging) Ctrl+T Toggle a breakpoint at the current line (Debug.ToggleBreakpoint) Ctrl+K + Ctrl+I Step Into the method (Debug.StepInto) Ctrl+K + Ctrl+O Step Out of the method (Debug.StepOut) Ctrl+N Step over the method to the Next statement (Debug.StepOver) Ctrl+K + Ctrl+C Run the code, stopping at the Cursor position (Debug.RunToCursor) Ctrl+K + Ctrl+E Set then next statement to Execute (Debug.SetNextStatement) Navigating the code Ctrl+S Move a character LEFT (Edit.CharLeft) Ctrl+D Move a character RIGHT (Edit.CharRight) Ctrl+Q + Ctrl+S Move to the LEFT END of the current line (Edit.LineStart) Ctrl+Q + Ctrl+D Move to the RIGHT END of the current line (Edit.LineEnd) Ctrl+E Move a line UP (Edit.LineUp) Ctrl+X Move a line DOWN (Edit.LineDown) Ctrl+K + Ctrl+K Toggle (add or remove) bookmark (Edit.ToggleBookmark) Ctrl+K + Ctrl+N Move to the NEXT bookmark (Edit.NextBookmark) Ctrl+K + Ctrl+P Move to the PREVIOUS bookmark (Edit.PreviousBookmark) Ctrl+Q + Ctrl+W Save all modified Windows (File.SaveAll) Ctrl+L Find the NEXT instance of the search string (Edit.FindNext) Ctrl+K + Ctrl+L Find the PREVIOUS instance of the search string (Edit.FindPrevious) Ctrl+Q + Ctrl+L Drop down the list of open files (Window.ShowEzMDIFileList) The last sequence is like clicking the downward-facing triangle in the upper-right corner of the code editor window. VS will display a list of all the open windows. You can select from the list by typing the file name; the matching file will be selected as you type. Pause for a second and resume typing, and the matching process starts over, so you can select a different file. Nice, VS Team. The key takes you to the tab for the selected file.

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  • substring with linq??

    - by phenevo
    I've got collection of words, and i wanna create collection from this collection limited to 5 chars Input: Car Collection Limited stackoverflow Output: car colle limit stack word.Substring(0,5) throws exception (length) word.Take(10) is not good idea, too... Any good ideas ??

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  • Combining the UNIQUE and CHECK constraints

    - by Bobby
    I have a table with columns a b and c, and if c is false then I only want to allow insertions if columns a and b are unique, but if c is true then a and b do not need to be unique. Example: There can only be one (foo, bar, false) in the table, but no limit on how many (foo, bar, true) there can be. I tried something like CONSTRAINT blah UNIQUE (a,b) AND CHECK (C is TRUE) but I can't figure out the correct syntax.

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  • Yahoo Web Scrapes: What are the limits?

    - by bvandrunen
    We are using a web scraper and have it set up to have a sleep function which has a random function set up (so that it isn't the same time between each scrape) but we are still getting blocked from Yahoo after 20-30 requests. Does any one know if there is a limit (i.e: 20 requests per minutes, 200 an hour) Right now our average between each request is around 3-6 seconds. Thanks for any help

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  • PHP max_execution_time not timing out

    - by Joey Ezekiel
    This is not one of the regular questions if sleep is counted for timeout or stuff like that. Ok, here's the problem: I've set the max_execution_time for PHP as 15 seconds and ideally this should time out when it crosses the set limit, but it doesn't. Apache has been restarted after the change to the php.ini file and an ini_get('max_execution_time') is all fine. Sometimes the script runs for upto 200 seconds which is crazy. I have no database communication whatsoever. All the script does is looking for files on the unix filesystem and in some cases re-directing to another JSP page. There is no sleep() on the script. I calculate the total execution time of the PHP script like this: At the start of the script I set : $_mtime = microtime(); $_mtime = explode(" ",$_mtime); $_mtime = $_mtime[1] + $_mtime[0]; $_gStartTime = $_mtime; and the end time($_gEndTime) is calculated similarly. The total time is calculated in a shutdown function that I've registered: register_shutdown_function('shutdown'); ............. function shutdown() { .............. .............. $_total_time = $_gEndTime - $_gStartTime; .............. switch (connection_status ()) { case CONNECTION_NORMAL: .... break; .... case CONNECTION_TIMEOUT: .... break; ...... } } Note: I cannot use $_SERVER['REQUEST_TIME'] because my PHP version is incompatible. That sucks - I know. 1) Well, my first question obviously is is why is my PHP script executing even after the set timeout limit? 2) Apache has the Timeout directive which is 300 seconds but the PHP binary does not read the Apache config and this should not be a problem. 3) Is there a possibility that something is sending PHP into a sleep mode? 4) Am I calculating the execution time in a wrong way? Is there a better way to do this? I'm stumped at this point. PHP Wizards - please help.

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  • add autocomplete facility for dynamically added input tag

    - by hunt
    I am creating autocomplete functionality on an input tag using following code. $('.query').autocomplete({ serviceUrl:'http://localhost/main/finder.php', minChars:2, delimiter: /(,|;)\s*/, // regex or character maxHeight:400, width:400, zIndex: 9999, deferRequestBy: 0, //miliseconds onSelect: function(value, data){ } }); Now the problem is my input element is added dynamically so for first input tag autocomplete is working but when i add one more input tag then it fails for the second one. so i need some facility that live() provide in jquery ... please do post the solution

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  • Backslashes in gsub (escaping and backreferencing)

    - by polygenelubricants
    Consider the following snippet: puts 'hello'.gsub(/.+/, '\0 \\0 \\\0 \\\\0') This prints (as seen on ideone.com): hello hello \0 \0 This was very surprising, because I'd expect to see something like this instead: hello \0 \hello \\0 My argument is that \ is an escape character, so you write \\ to get a literal backslash, thus \\0 is a literal backslash \ followed by 0, etc. Obviously this is not how gsub is interpreting it, so can someone explain what's going on? And what do I have to do to get the replacement I want above?

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  • SMTP service to send email on my web application

    - by jmoney
    I've been using gmail's SMTP server to send email (notifications, password reminder, etc) in my web application. However, i'm getting to the point where i'm reaching the limit of 500 sent emails per day using gmail's SMTP. Is there any SMTP service's that I can use instead? A friend told me about sendgrid.com, but that's the only one i've heard of.

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