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  • c++: use a #define in printf?

    - by John
    I was wanting to use a constant of some kind for the application ID (so I can use it in printf). I had this: #define _APPID_ "Hello World!" And then the simple printf, calling it into %s (string). It put this out: simple.cpp:32: error: cannot convert ‘_IO_FILE*’ to ‘const char*’ for argument ‘1’ to ‘int printf(const char*, ...)’ What would I use to define the application ID to use in printf? I tried: static const char _APPID_[] = "Hello World"` but it didn't work, same error I think.

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  • Java: pass an event to another component

    - by John
    Sorry I don't know if this is very clear, but I'm pretty new to Java. So I have a JFrame with a BorderLayout containing a JPanel and a JButton. What I want to do is when something happens in my JPanel, I want for example change the text of the JButton, or enable/disable it. How would I do that? How can I access the JButton from the JPanel? I know some ways of doing it but I don't think they're the best way to do it. What would be the best way to do this? Thanks in advance

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  • [Visual C++]Forcing memory alignment of variables/data-structures

    - by John
    I'm looking at using SSE and I gather aligning data on 16byte boundaries is recommended. There are two cases to consider: float data[4]; struct myystruct { float x,y,z,w; }; I'm not sure the first case can be done explicitly, though there's perhaps a compiler option I could use? In the second case I remember being able to control packing in old versions of GCC several years back, is this still possible?

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  • How to understand other people's CSS architectures?

    - by John
    I am reasonably good with CSS. However, when working with someone else's CSS, it's difficult for me to see the "bigger picture" in their architecture (but i have no problem when working with a CSS sheet I wrote myself). For example, I have no problems using Firebug to isolate and fix cross browser compatibility issues, or fixing a floating issue, or changing the height on a particular element. But if I'm asked to do something drastic such as, "I want the right sidebars of pages A, B, C and D to have a red border. I want the right side bars of pages E, F and G to have a blue border if and only if the user mouses over", then it takes me time a long time to map out all the CSS inheritance rules to see the "bigger picture". For some reason, I don't encounter the same difficulty with backend code. After a quick debriefing of how a feature works, and a quick inspection of the controller and model code, I will feel comfortable with the architecture. I will think, "it's reasonable to assume that there will be an Employee class that inherits from the Person Class that's used by a Department controller". If I discover inconvenient details that aren't consistent with overall architectural style, I am confident that I can hammer things back in place. With someone else's CSS work, it's much harder for me to see the "relationships" between different classes, and when and how the classes are used. When there are many inheritance rules, I feel overwhelmed. I'm having trouble articulating my question and issues... All I want to know is, why is it so much harder for me to see the bigger picture in someone else's CSS architecture than compared to someone else's business logic layer? **Does it have any thing to do with CSS being a relatively new technology, and there aren't many popular design patterns?

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  • Templating Word Documents in C#

    - by NullGeo
    I was wondering if there is a library out there such that it could give me the ability to fill in word templates with custom values. For example: Following could be the content of the Word Document {Address} {PhoneNumber} Hello {Name}, How are you doing? In C# I would like to do something like this to replace all the placeholders in the Word document: using(WordDocument doc = WordDocument.Load("Mail.docx")){ var person = new {Name = "John Smith", Address="42 Wallaby Way, Sydney", PhoneNumber="555-555-5555"}; doc.Template(person); doc.Print(); } The resulting document would look like this: 42 Wallaby Way, Sydney 555-555-5555 Hello John Smith, How are you doing? Any libraries out there (preferably free) that let's me do this? Edit: I am not asking you to find anything that let's me do this. If that was the case, I would do a Google search by myself. Honestly, all I am asking is "has anybody used a library in the past to do this exact thing."

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  • Does window.open not work inside an AIR html component?

    - by John Isaacks
    I have a component in AIR like so: <mx:HTML id="html" width="100%" height="100%" location="https://example.com" locationChange="dispatchLocationChange(event)" /> The page it loads contains this: <a onclick="alert('onclick')">Alert</a> <a href="javascript:alert('js')">Alert</a> <a onclick="window.open('http://www.google.com','_blank')">new window</a> The 2 alerts both work. however nothing happens when you click the new window link. all 3 links works when in a real browser so I know its ok. Is there just no support for window.open in the AIR HTML component? or is this a bug? Is there a work around?

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  • Problem deleting .svn directories on Windows XP

    - by John L
    I don't seem to have this problem on my home laptop with Windows XP, but then I don't do much work there. On my work laptop, with Windows XP, I have a problem deleting directories when it has directories that contain .svn directories. When it does eventually work, I have the same issue emptying the Recycle bin. The pop-up window says "Cannot remove folder text-base: The directory is not empty" or prop-base or other folder under .svn This continued to happen after I changed config of TortoiseSVN to stop the TSVN cache process from running and after a reboot of the system. Multiple tries will eventually get it done. But it is a huge annoyance because there are other issues I'm trying to fix, so I'm hoping it is related. 'Connected Backup PC' also runs on the laptop and the real problem is that cygwin commands don't always work. So I keep thinking the dot files and dot directories have something to do with both problems and/or the backup or other process scanning the directories is doing it. But I've run out of ideas of what to try or how to identify the problem further.

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  • What is on the 68000 stack when classic MacOS enters a program?

    - by John Källén
    I'm trying to understand an old classic Mac application's entry point. I've disassembled the first CODE resource (not CODE#0, which is the jump table). The code refers to some variables off the stack: a word at 0004(A7), an array of long words of starting at 000C(A7) whose length is the value at 0004(A7), and a final long word beyond that array that seems to be a pointer to a character string. The array of long words looks like strings at first glance, so it looks superficially like we're dealing with an (int argc, char ** argv) situation, except the "argv" array is inline in the stack frame. What should a program be expecting on its stack / registers when it first gets called by the Mac OS?

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  • WPF WrapPanel - all items should have the same width

    - by John
    I have a ListBox whose ItemsPanel I have replaces with a WrapPanel. The WrapPanel now hosts the databound ListboxItems. Each item has a variable sized text in it, giving each item a different width. However, I want the width to be constant so that all items have the same width as the item with the longest text. Is that possible?

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  • i18n - What are some naming-convention to use in creating language files?

    - by John Himmelman
    I'm developing a CMS that required i18n support. The translation strings are stored as an array in a language file (ie, en.php). Are there any naming conventions for this.. How can I improve on the sample language file below... // General 'general.title' => 'CMS - USA / English', 'general.save' => 'Save', 'general.choose_category' => 'Choose category', 'general.add' => 'Add', 'general.continue' => 'Continue', 'general.finish' => 'Finish', // Navigation 'nav.categories' => 'Categories', 'nav.products' => 'Products', 'nav.collections' => 'Collections', 'nav.styles' => 'Styles', 'nav.experts' => 'Experts', 'nav.shareyourstory' => 'Share Your Story', // Products 'cms.products' => 'Products', 'cms.add_product' => 'Add Product', // Categories 'cms.categories' => 'Categories', 'cms.add_category' => 'Add Category', // Collections 'cms.collections'=> 'Collections', 'cms.add_collections' => 'Add Collection', // Stylists 'cms.styles' => 'Stylists', 'cms.add_style' => 'Add Style', 'cms.add_a_style' => 'Add a style', // Share your story 'cms.share_your_story' => 'Share Your Story', // Styles 'cms.add_style' => 'Add Style',

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  • Java 7 New Features

    - by John W.
    I have done some good reading on the new java.util.concurrent features being introduced with the java 7 release. For instance, Phaser, TransferQueue and the more exciting Fork Join Framework. I recently saw a power point made by Josh Bloch about even more features that are going to be introduced however that link has been lost. For example I remember one change is being able to build a Map the same way you can build an array for: Map myMap = {"1,Dog","2,Cat"}; and so forth (this may not be 100% correct but the idea is there) Does anyone know of a list or just can name some new things to look forward to? Note: I did see a question asked http://stackoverflow.com/questions/213958/new-features-in-java-7 however it was asked ~2 years ago and I am sure the list of updates are more concrete. Thanks!

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  • How do I know if my PHP application is using too much memory?

    - by John
    I'm working on a PHP web application that let's users network with each other, book events, message etc... I launched it a few months ago and at the moment, there's only about 100 users. I set up the application on a VPS with ubuntu 9.10, apache 2, mysql 5 and php 5. I had 360 Mb of RAM, but upgraded to 720 MB a few minutes ago. Lately, my web application has been experiencing outages due to excessive memory usage. From what I can tell in error logs, it seems the server automatically kills apache processes that consume too much memory. As a result, I upgraded memory from 360 MB to 720 MB as a stop-gap measure. So my question is, how do I go about resolving these outage issues? How do I know if my website's need for more memory is due to poor code or if it's part of the website's natural growth? What's the most efficient way to determine which PHP scripts consume the most memory?

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  • what else to do to establish many-to-many associations in Ruby on Rails? thanks!

    - by john
    Hi, I have two classes and I want to establish a many-to-many assications, here is the code: class Category < ActiveRecord::Base has_and_belongs_to_many :events has_and_belongs_to_many :tips end class Tip < ActiveRecord::Base has_and_belongs_to_many :categories However, I kept getting the following errors and I would appreciate it if some one could educate me what is going wrong: PGError: ERROR: relation "categories_tips" does not exist : SELECT "categories".id FROM "categories" INNER JOIN "categories_tips" ON "categories".id = "categories_tips".category_id WHERE ("categories_tips".tip_id = NULL ) the viewer part: 4: <%= text_field :tip, :title %></label></p> 5: 6: <p><label>Categories<br/> 7: <%= select_tag('categories[]', options_for_select(Category.find(:all).collect {|c| [c.name, c.id] }, @tip.category_ids), :multiple => true ) %></label></p> 8: 9: <p><label>Location<br/> 10: <%= text_field_with_auto_complete :tip, :abstract %></label></p>

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  • money_format() options

    - by John Isaacks
    I am looking at the money_format function in php and confused on how to get it to format the way I want. I do not want USD in front of my string, I want a comma every 3 digits and 2 decimal points so 12345.67 will be formated to $12,345.67 Thanks.

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  • Hudson - Maven is failing (cannot create /dev/null/.m2) on Tomcat-6 - Gentoo

    - by John
    Hi there. I'm having major issues with getting Hudson up and running on a gentoo server with Tomcat 6. I'm able to deploy Hudson just fine, and I can browse the web-application, configure it and set up builds etc. However, when I try to run a build (in example "clean test" on a Maven2 project) I get this error ERROR: Failed to create /dev/null/.m2 I've google'd and for some it seems to be helping to put -DHUDSON_HOME=/home/hudson and -DMAVEN_HOME=/home/hudson in /etc/init.d/tomcat-6's JAVA_OPTS. However, I've tried that and by doing the same in /etc/conf.d/tomcat-6 , but I'm still getting this error. Has any of you had to deal with this before?

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  • mod_rewrite htaccess redirect on specific request

    - by John
    is there a way to make mod_rewrite redirect all urls contain the following request: ?do=page&f=* to a specific page? for example: http://example.com/index.php?do=page&f=2 http://example.com/index2.php?do=page&f=4 http://example.com/page.php?do=page&f=22 to: http://example.com/custom.php

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  • PHP - How to determine if request is coming from a specific file.

    - by John
    I have fileA.php on SERVER_A and fileB.php on SERVER_B fileB.php makes a curl request to fileA.php for it's contents How can fileA.php determine that the request is coming specifically from fileB.php? -- I was thinking about sending the $_SERVER['SCRIPT_NAME'] in fileB.php to fileA.php but since someone can go into fileB.php or any file in general and just do $_SERVER['SCRIPT_NAME'] = 'fileB.php'; it's not really that secure. So how can I determine, for security reasons, that the request is coming from a specific file on a different server?

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  • whats wrong with this piece of code for saving contacts

    - by Shadow
    Hi, i am using the latest Nokia Qt SDK. i have tried to add the contacts, its not getting added.. what is missing here.. // Construct contact manager for default contact backend QContactManager* cm = new QContactManager("simulator"); // QContactManager* cm = new QContactManager("memory"); // i tried this, its also not working // Create example contact QContact example; // Add contact name QContactName name; name.setFirstName("John"); name.setLastName("Doe"); example.saveDetail(&name); // Add contact email address //QContactEmailAddress email; // email.setContexts(QContactDetail::ContextHome); //email.setEmailAddress(“[email protected]”); // example.saveDetail(&email); // Finally, save the contact details cm->saveContact(&example); delete cm; Thanks

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