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  • Is the Unix Philosophy still relevant in the Web 2.0 world?

    - by David Titarenco
    Introduction Hello, let me give you some background before I begin. I started programming when I was 5 or 6 on my dad's PSION II (some primitive BASIC-like language), then I learned more and more, eventually inching my way up to C, C++, Java, PHP, JS, etc. I think I'm a pretty decent coder. I think most people would agree. I'm not a complete social recluse, but I do stuff like write a virtual machine for fun. I've never taken a computer course in college because I've been in and out for the past couple of years and have only been taking core classes; never having been particularly amazing at school, perhaps I'm missing some basic tenet that most learn in CS101. I'm currently reading Coders at Work and this question is based on some ideas I read in there. A Brief (Fictionalized) Example So a certain sunny day I get an idea. I hire a designer and hammer away at some C/C++ code for a couple of months, soon thereafter releasing silvr.com, a website that transmutes lead into silver. Yep, I started my very own start-up and even gave it a clever web 2.0 name with a vowel missing. Mom and dad are proud. I come up with some numbers I should be seeing after 1, 2, 3, 6, 9, 12 months and set sail. Obviously, my transmuting server isn't perfect, sometimes it segfaults, sometimes it leaks memory. I fix it and keep truckin'. After all, gdb is my best friend. Eventually, I'm at a position where a very small community of people are happily transmuting lead into silver on a semi-regular basis, but they want to let their friends on MySpace know how many grams of lead they transmuted today. And they want to post images of their lead and silver nuggets on flickr. I'm losing out on potential traffic unless I let them log in with their Yahoo, Google, and Facebook accounts. They want webcam support and live cock fighting, merry-go-rounds and Jabberwockies. All these things seem necessary. The Aftermath Of course, I have to re-write the transmuting server! After all, I've been losing money all these months. I need OAuth libraries and OpenID libraries, JSON support, and the only stable Jabberwocky API is for Java. C++ isn't even an option anymore. I'm just one guy! The Java binary just grows and grows since I need some legacy Apache include for the JSON library, and some antiquated Sun dependency for OAuth support. Then I pick up a book like Coders at Work and read what people like jwz say about complexity... I think to myself.. Keep it simple, stupid. I like simple things. I've always loved the Unix Philosophy but even after trying to keep the new server source modular and sleek, I loathe having to write one more line of code. It feels that I'm just piling crap on top of other crap. Maybe I'm naive thinking every piece of software can be simple and clever. Maybe it's just a phase.. or is the Unix Philosophy basically dead when it comes to the current state of (web) development? I'm just kind of disheartened :(

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  • How can I add complete binaries to a Mercurial patch?

    - by David Corley
    I want to use Mercurial to capture changes made to the vanilla installation of a piece of software we use. Everytime we upgrade the software, we need to manually edit the various configuration files and add 3rd party libraries that we use in the current version of the software. Creating patches for the configuration files changes are fine, but how do I add 3rd party libraries (binaries) to a Mercurial patch? Is it even possible?

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  • Suppress indentation after environment in LaTeX

    - by David
    I'm trying to create a new environment in my LaTeX document where indentation in the next paragraph following the environment is suppressed. I have been told (TeXbook and LaTeX source) that by setting \everypar to {\setbox0\lastbox}, the TeX typesetter will execute this at the beginning of the next paragraph and thus remove the indentation: \everypar{\setbox0\lastbox} So this is what I do, but to no effect (following paragraph is still indented): \newenvironment{example} {\begin{list} {} {\setlength\leftmargin{2em}}} {\end{list}\everypar{\setbox0\lastbox}} I have studied LaTeX's internals as well as I could manage. It seems that the \end routine says \endgroup and \par at some point, which may be the reason LaTeX ignores my \everypar setting. \global doesn't help either. I know about \noindent but want to do this automatically. Example document fragment: This is paragraph text. This is paragraph text, too. \begin{example} \item This is the first item in the list. \item This is the second item in the list. \end{example} This is more paragraph text. I don't want this indented, please. Internal routines and switches of interest seem to be \@endpetrue, \@endparenv and others. Thanks for your help.

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  • Cast from Void* to TYPE* using C++ style cast: static_cast or reinterpret_cast

    - by David Relihan
    So if your converting from Void* to Type* or from Type* to Void* should you use: void func(void *p) { Params *params = static_cast<Params*>(p); } or void func(void *p) { Params *params = reinterpret_cast<Params*>(p); } To me static_cast seems the more correct but I've seen both used for the same purpose. Also, does the direction of the conversion matter. i.e. should I still use static_cast for: _beginthread(func,0,static_cast<void*>(params) I have read the other questions on C++ style casting but I'm still not sure what the correct way is for this scenario (I think it is static_cast)

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  • UIView animation along a round path?

    - by david
    I need to make my little guy (in a UIIamgeView) jump forward and it has to look natural. I want to know is there a way to do it with CoreAnimation (beginAnimation/commitAnimation)? I could do it by setting a point in between in the air but the movement looks not natural :P

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  • JQUERY UI Dialog Box - Close Function

    - by David Bonnici
    Hi Guys, I have a problem with the jquery-ui dialog box. The problem is that when I close the dialog box and then I click on the link that triggers it, it does not pop-up again unless I refresh the page. How can I call the dialog box back without refreshing the actual page. Have a look: $(document).ready(function() { $('#showTerms').click(function() { $('#terms').css('display','inline'); $('#terms').dialog({resizable: false, modal: true, width: 400, height: 450, overlay: { backgroundColor: "#000", opacity: 0.5 }, buttons:{ "Close": function() { $(this).dialog("close"); } }, close: function(ev, ui) { $(this).remove(); }, }); }); Thanks

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  • Localization as an afterthought-- screwed?

    - by David
    So I signed on with a startup web development company as a subcontractor. They are putting together a large, complex user/product management system for a company that needs to support multiple levels of hierarchial localization. I signed a 3 month contract, and upon looking at their code, wish I hadn't. They opted to write their own MVC framework (I guess the client company didn't want to use a prewritten one) and it's extremely poorly written. There's SQL scattered throughout almost every model view and controller (and there's no parameter-based find methods, it's all SQL) and they haven't even THOUGHT about localization yet-- something that will have an affect on nearly EVERY query. The due date is 4 months away, and I honestly think we'd make good progress by scrapping the whole thing and going with CakePHP. Have any of you been in a similar situation, and what did you do? PS: This is written in PHP/MySQL.

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  • PList Chicken/Egg Scenario

    - by David van Dugteren
    Hi, I want to read/write to cache.plist If I want to read an existing premade plist file stored in the resources folder I can go: path = [[NSBundle mainBundle] bundlePath]; NSString *finalPath = [path stringByAppendingPathWithComponent@"cache.plist"]; NSMutableDictionary *root = ... But then I wish to read it from the iPhone. Can't, the Resources folder is only readable. So I need to use: NSDocumentDirectory, NSUserDomain,YES So how can I have my plist file preinstalled to the Document Directory location? Thus meaning I don't have to mess around with untidy code copying the plist file over at startup. (Unless that's the only way).

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  • NavigationBar from UINavigationController not positioned correctly

    - by David Liu
    So, my iPad program has a pseudo-split view controller (one that I implemented, not base SDK one), and was working correctly a while ago. It has the basic layout (UINavController for master, content view controller for detail on right), but I have it so the master view doesn't disappear when rotated into portrait view. Recently, I added in a UITabBarController to contain the entire split view, which has made the navigation bar go wonky, while all the other views are positioned fine. In addition, the navigation bar only gets mispositioned when the program starts up while the iPad is in landscape, or upside-down portrait. If it starts out in portrait, everything is fine. Relevant Code: RootViewController.m: - (void)loadView { navController = [[NavigationBreadcrumbsController_Pad alloc] init]; ABTableViewController_Pad * tableViewController = [[ABTableViewController_Pad alloc] initWithNibName:@"ABTableView"]; master = [[UINavigationController_Pad alloc] initWithRootViewController:tableViewController]; [tableViewController release]; // Dummy blank UIViewcontroller detail = [[UIViewController alloc] init]; detail.view = [[[UIView alloc] init] autorelease]; [detail.view setBackgroundColor:[UIColor grayColor]]; self.view = [[[UIView alloc] init] autorelease]; self.view.backgroundColor = [UIColor blackColor]; [self positionViews]; [self.view addSubview:navToolbarController.view]; [self.view addSubview:master.view]; [self.view addSubview:detail.view]; } // Handles the respositioning of view into it's current orientation -(void)positionViews{ CGFloat tabBarOffset = 0; if(self.tabBarController){ tabBarOffset = self.tabBarController.tabBar.frame.size.height; } if(self.interfaceOrientation == UIInterfaceOrientationPortrait || self.interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) { self.view.frame = CGRectMake(0, 0, 768, 1004); navController.view.frame = CGRectMake(0,0,768,44); //adjust master view [master.view setFrame:CGRectMake(0, 44, 320, 1024 - 44 - 20 - tabBarOffset)]; //adjust detail view [detail.view setFrame:CGRectMake(321,44, 448, 1024 - 44 - 20 - tabBarOffset)]; } // Landscape Layout else{ self.view.frame = CGRectMake(0, 0, 748, 1024); navToolbarController.view.frame = CGRectMake(0,0,1024,44); //adjust master view [master.view setFrame:CGRectMake(0, 44, 320, 768 - 44 - 20 - tabBarOffset)]; //adjust detail view [detail.view setFrame:CGRectMake(321,44, 1024 - 320, 768 - 44 - 20 - tabBarOffset)]; } }

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  • How do I memoize expensive calculations on Django model objects?

    - by David Eyk
    I have several TextField columns on my UserProfile object which contain JSON objects. I've also defined a setter/getter property for each column which encapsulates the logic for serializing and deserializing the JSON into python datastructures. The nature of this data ensures that it will be accessed many times by view and template logic within a single Request. To save on deserialization costs, I would like to memoize the python datastructures on read, invalidating on direct write to the property or save signal from the model object. Where/How do I store the memo? I'm nervous about using instance variables, as I don't understand the magic behind how any particular UserProfile is instantiated by a query. Is __init__ safe to use, or do I need to check the existence of the memo attribute via hasattr() at each read? Here's an example of my current implementation: class UserProfile(Model): text_json = models.TextField(default=text_defaults) @property def text(self): if not hasattr(self, "text_memo"): self.text_memo = None self.text_memo = self.text_memo or simplejson.loads(self.text_json) return self.text_memo @text.setter def text(self, value=None): self.text_memo = None self.text_json = simplejson.dumps(value)

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  • preg_match_all and newlines inside quotes

    - by David
    Another noob regex problem/question. I'm probably doing something silly so I thought I'd exploit the general ingenuity of the SO regulars ;) Trying to match newlines but only if they occur within either double quotes or single quotes. I also want to catch strings that are between quotes but contain no newlines. Okay so there's what i got, with output. Below that, will be the output I would like to get. Any help would be greatly appreciated! :) I use Regex Coach to help me create my patterns, being a novice and all. According to RC, The pattern I supply does match all occurances within the data, but in my PHP, it skips over the multi-line part. I have tried with the 'm' pattern modifier already, to no avail. Contents of $CompressedData: <?php $Var = "test"; $Var2 = "test2"; $Var3 = "blah blah blah blah blah blah blah blah blah"; $Var4 = "hello"; ?> Pattern / Code: preg_match_all('!(\'|")(\b.*\b\n*)*(\'|")!', $CompressedData, $Matches); Current print_r output of $Matches: Array ( [0] => Array ( [0] => "test" [1] => "test2" [2] => "hello" ) ... } DESIRED print_r output of $Matches: Array ( [0] => Array ( [0] => "test" [1] => "test2" [2] => "blah blah blah blah blah blah blah blah blah" [3] => "hello" ) ... }

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  • JQUERY Dialog Box

    - by David Bonnici
    Hi Guys, Im trying to do a dialog box with jquery. In this dialog box Im going to have terms and conditions. The problem is that the dialog box is only displayed for the FIRST TIME. This is the code JAVASCRIPT CODE: function showTOC() { $("#TOC").dialog({ modal: true, overlay: { opacity: 0.7, background: "black" } }) } HTML Code (A HREF) class="TOClink" href="javascript:showTOC();">View Terms & Conditions</> <div>id="example" title="Terms & Conditions">1..2.. </div> The problem I think is that when you close the dialog box the DIV is destroyed from the html code therfore it can never be displayed again on screen. Can you please help! Thanks

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  • Communication between modules

    - by David Elentok
    I have an application that consists from the following three modules: Search (to search for objects) List (to display the search results) Painter (to allow me to edit objects) - this module isn't always loaded (Each object is a figure that I can edit in the painter). When I open an object in the painter it's added to the objects that are already in the painter and I can move it and alter it. I'm using an object similar to the EventAggregator to communicate between the modules. For example, to show the search results I publish a "ShowList" event that is caught by the List module (I'm not sure this is the best way to do this, if anyone has better idea please comment...). One of the features of the search module requires it to get the selected object in the painter (if the painter is available), and I'm not sure what would be the best way to do that... I thought of these solutions: Whenever the selected object in the painter changes it will publish a "PainterSelectedObjectChanged" event which will be caught by the search module and stored for later use. When the selected object is needed by the search module it will publish a "RequestingPainterSelectedObject" event which will be caught by the painter module. The painter module will then set the "SelectedObject" property in the EventArgs object, and when the publish is complete and we're back in the search module we will have the painter's selected object in the EventArgs object. What do you think? what is the right way to do this?

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  • What is the most you've charged for a single programming job?

    - by David Murdoch
    This question/wiki is more aimed at my fellow freelancers rather than companies or groups...but any and all feedback definitely is welcome. When quoting jobs for anything over $10,000 I always feel uneasy and unsure about the estimate I'm providing (though, I'm not sure why, I know what I'm worth [ I think :-) ] and I charge appropriately. I'm sure there are more (noob) freelancers here on S.O. that feel the same way. In danger of being voted closed because of its subjective (but factual) nature - the question(s): What is the largest amount you have charged for a single programming job (not including maintenance, support, or residual income). What are some of the details of the specific job? (research, q&a, challenges, etc) What languages did you use to get the job done? Assuming you bill your work at an hourly rate, what was the rate? How long did the job actually take you to complete? (from start to deployment, how many weeks, months, years?)

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  • Compiling a bunch of stuff in the folder (java, on a mac)

    - by David
    two questions: how do i compile a .java file that isn't on my username (like something in documents or some other sub folder) if i have multiple .java files and i compile one that contains method that are contained in the others does the compiler compile those other files. heres an example of the second question. example1.java: class example1 { main () { example2.method () } } example2.java: class example2 { method () } When i compile example1.java will example2.java also be compiled?

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  • XmlHttpRequest in a bookmarklet returns empty responseText on GET?

    - by David Eyk
    I'm trying to build a javascript bookmarklet for a special URL shortening service we've built at http://esv.to for shortening scripture references (i.e. "Matthew 5" becomes "http://esv.to/Mt5". The bookmarklet is supposed to do a GET request to http://api.esv.to/Matthew+5, which returns a text/plain response of http://esv.to/Mt5. The code for the bookmarklet itself looks like this (expanded for readability): var body = document.getElementsByTagName('body')[0], script = document.createElement('script'); script.type = 'text/javascript'; script.src = 'http://esv.to/media/js/bookmarklet.js'; body.appendChild(script); void(0); The code from http://esv.to/media/js/bookmarklet.js looks like this: (function() { function shorten(ref, callback) { var url = "http://esv.to/api/" + escape(ref); var req = new XMLHttpRequest(); req.onreadystatechange = function shortenIt() { if ( this.readyState == 4 && this.status == 200 ) { callback(req.responseText); }; }; req.open( "GET", url ); req.send(); }; function doBookmarklet() { var ref = prompt("Enter a scripture reference or keyword search to link to:", "") shorten(ref, function (short) { prompt("Here is your shortened ESV URL:", short); }); }; doBookmarklet(); })(); When called from http://esv.to itself, the bookmarklet works correctly. But when used on another page, it does not. The strange thing is, when I watch the request from Firebug, the response is 200 OK, the browser downloads 17 bytes (the length of the returned string), but the response body is empty! No error is thrown, just an empty responseText on the XmlHttpRequest object. Now, according to http://stackoverflow.com/questions/664689/ajax-call-from-bookmarklet, GET shouldn't violate the same origin policy. Is this a bug? Is there a workaround?

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  • Backing Up Transaction Logs to Tape?

    - by David Stein
    I'm about to put my database in Full Recovery Model and start taking transaction log backups. I am taking a full nightly backup to another server and later in the evening this file and many others are backed up to tape. My question is this. I will take hourly (or more if necessary) t-log backups and store them on the other server as well. However, if my full backups are passing DBCC and integrity checks, do I need to put my T-Logs on tape? If someone wants point in time recovery to yesterday at 2pm, I would need the previous full backup and the transaction logs. However, other than that case, if I know my full back ups are good, is there value in keeping the previous day's transaction log backups?

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  • ASP.NET The underlying connection was closed: Could not establish trust relat

    - by David Lively
    When attempting to use HttpWebRequest to retrieve a page from my dev server, I get a web exception: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel." The remote certificate is invalid according to the validation procedure... The url I'm attempting to read from is a plain-old http://myserver.com/mypage.asp - no SSL. The production server has a valid certificate so this shouldn't be an issue, but our dev server doesn't. Help!

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  • How to convert a PCRE to a POSIX RE?

    - by David M
    This interesting question http://stackoverflow.com/questions/2837267/ concerned how to do a negative look-ahead in MySQL. The poster wanted to get the effect of Kansas(?! State) because MySQL doesn't implement look-ahead assertions, a number of answers came up the equivalent Kansas($|[^ ]| ($|[^S])| S($|[^t])| St($|[^a])| Sta($|[^t])| Stat($|[^e])) The poster pointed out that's a PITA to do for potentially lots of expressions. Is there a script/utility/mode of PCRE (or some other package) that will convert a PCRE (if possible) to an equivalent regex that doesn't use Perl's snazzy features? I'm fully aware that some Perl-style regexes cannot be stated as an ordinary regex, so I would not expect the tool to do the impossible, of course!

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  • How Does Entourage 2008 (for Mac) Decide Which Emails Form a Conversation?

    - by David M
    This is a little bit like http://stackoverflow.com/questions/288757/how-to-identify-email-belongs-to-existing-thread-or-conversation but I am more interested in how Entourage 2008 really does threading as opposed to how it ought to. I have the parent message that has something like Message-ID: <[email protected]/> then some replies that have (in addition to their own Message-ID) In-Reply-To: <[email protected]/> However, these show up as two conversations! The first conversation consists solely of the parent message, and the second conversation consists of the other replies. Would adding a References: header (as described in RFC 2822) resolve this?

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