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  • Beginner question about CSS and layout and height

    - by vtortola
    Hi, I'm trying to create a very simple page that contains a container, a header, a left column and a footer: [containter] [header /] [content /] [leftBar /] [footer /] [/containter] (Sorry, I cannot paste the code properly, only appears the tag "body" and the rest disapears :S ... ) As you can see, very simple stuff. I want to use the 100% of the height, as I can do with the width, but I simply don`t get it work :S At his moment I'm using min-height, but how could I use the height:100% ? What I like is that the footer is always visible, and you scroll the content. This is what I have till the moment: body { font-family: Verdana; font-size: 0.8em; background-color:#f1f1f1; } container { border:solid 2px Black; position:absolute; left:10%; width:80%; margin:auto; } header { height:20px; background: #DDDDDD; } leftBar { width: 20%; background: #669966; min-height:600px; postion:absolute; top:20px; bottom:20px; } content { float:right; background-color: #cdcde6; position:absolute; left:20%; right:0px; bottom:20px; top:20px; padding:5px; } footer { position:absolute; height:20px; } I'm reading a book about CSS, but I still don't get the part about the height :S Thanks in advance.

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  • Minimizing SpringLdap dependencies.

    - by mP
    I would like to use SpringLDAP to do some simple username/password verification for authentication purposes. WHile the actual jar file is quite small (less than 1 meg) it seems to have a lot of dependencies as listed by link text. By alot i mean it seems to suck in over 50 things many which dont seem right such as spring-jdbc as I dont want any jdbc and only the ldap template class and its bare dependencies. Without wasting too much time is it possible to the spring-ldap with only a bare minimum number of dependencies which amount to something like: spring core spring ldap whatever logging deps they require. spring tx I dont see or appreciate why the rest of thes tuff is reuqired and was wondering can anyone verify they arent really needed in the end if one sticks to the basics. The other stuff i am referring too include: spring-orm // no jdbc beans // i dont want ioc. spring-aop // no need for aop. I intend to wire up the beans i will be using manually. I dont want more crap in there for what ammounts to setting a few properties, and want confirmation that I dont need what is probably there just to do the ioc stuff when all i want is the ldap stuff.

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  • TDD test data loading methods

    - by Dave Hanson
    I am a TDD newb and I would like to figure out how to test the following code. I am trying to write my tests first, but I am having trouble for creating a test that touches my DataAccessor. I can't figure out how to fake it. I've done the extend the shipment class and override the Load() method; to continue testing the object. I feel as though I end up unit testing my Mock objects/stubs and not my real objects. I thought in TDD the unit tests were supposed to hit ALL of the methods on the object; however I can never seem to test that Load() code only the overriden Mock Load My tests were write an object that contains a list of orders based off of shipment number. I have an object that loads itself from the database. public class Shipment { //member variables protected List<string> _listOfOrders = new List<string>(); protected string _id = "" //public properties public List<string> ListOrders { get{ return _listOfOrders; } } public Shipment(string id) { _id = id; Load(); } //PROBLEM METHOD // whenever I write code that needs this Shipment object, this method tries // to hit the DB and fubars my tests // the only way to get around is to have all my tests run on a fake Shipment object. protected void Load() { _listOfOrders = DataAccessor.GetOrders(_id); } } I create my fake shipment class to test the rest of the classes methods .I can't ever test the Real load method without having an actual DB connection public class FakeShipment : Shipment { protected new void Load() { _listOfOrders = new List<string>(); } } Any thoughts? Please advise. Dave

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  • Does this use of Monitor.Wait/Pulse have a race condition?

    - by jw
    I have a simple producer/consumer scenario, where there is only ever a single item being produced/consumed. Also, the producer waits for the worker thread to finish before continuing. I realize that kind of obviates the whole point of multithreading, but please just assume it really needs to be this way (: This code doesn't compile, but I hope you get the idea: // m_data is initially null // This could be called by any number of producer threads simultaneously void SetData(object foo) { lock(x) // Line A { assert(m_data == null); m_data = foo; Monitor.Pulse(x) // Line B while(m_data != null) Monitor.Wait(x) // Line C } } // This is only ever called by a single worker thread void UseData() { lock(x) // Line D { while(m_data == null) Monitor.Wait(x) // Line E // here, do something with m_data m_data = null; Monitor.Pulse(x) // Line F } } Here is the situation that I am not sure about: Suppose many threads call SetData() with different inputs. Only one of them will get inside the lock, and the rest will be blocked on Line A. Suppose the one that got inside the lock sets m_data and makes its way to Line C. Question: Could the Wait() on Line C allow another thread at Line A to obtain the lock and overwrite m_data before the worker thread even gets to it? Supposing that doesn't happen, and the worker thread processes the original m_data, and eventually makes its way to Line F, what happens when that Pulse() goes off? Will only the thread waiting on Line C be able to get the lock? Or will it be competing with all the other threads waiting on Line A as well? Essentially, I want to know if Pulse()/Wait() communicate with each other specially "under the hood" or if they are on the same level with lock(). The solution to these problems, if they exist, is obvious of course - just surround SetData() with another lock - say, lock(y). I'm just curious if it's even an issue to begin with.

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  • Can I copy/clone a function in JavaScript?

    - by Craig Stuntz
    I'm using jQuery with the validators plugin. I would like to replace the "required" validator with one of my own. This is easy: jQuery.validator.addMethod("required", function(value, element, param) { return myRequired(value, element, param); }, jQuery.validator.messages.required); So far, so good. This works just fine. But what I really want to do is call my function in some cases, and the default validator for the rest. Unfortunately, this turns out to be recursive: jQuery.validator.addMethod("required", function(value, element, param) { // handle comboboxes with empty guids if (someTest(element)) { return myRequired(value, element, param); } return jQuery.validator.methods.required(value, element, param); }, jQuery.validator.messages.required); I looked at the source code for the validators, and the default implementation of "required" is defined as an anonymous method at jQuery.validator.messages.required. So there is no other (non-anonymous) reference to the function that I can use. Storing a reference to the function externally before calling addMethod and calling the default validator via that reference makes no difference. What I really need to do is to be able to copy the default required validator function by value instead of by reference. But after quite a bit of searching, I can't figure out how to do that. Is it possible? If it's impossible, then I can copy the source for the original function. But that creates a maintenance problem, and I would rather not do that unless there is no "better way."

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  • Auto-converting numbers to comma-fied versions

    - by Jeff Atwood
    Given the following text /feeds/tag/remote-desktop 1320 17007 22449240 /feeds/tag/terminal-server 1328 15805 20989040 /foo/23211/test 1490 11341 16898090 Let's say we want to convert those numbers to their comma-fied forms, like so /feeds/tag/remote-desktop 1,320 17,007 22,449,240 /feeds/tag/terminal-server 1,328 15,805 20,989,040 /foo/23211/test 1,490 11,341 16,898,090 (don't worry about fixing the fixed-width ASCII spacing, that's a problem for another day) This is the best regex I could come up with; it's based on this JavaScript regex solution from Regex Ninja Steven Levithan: return Regex.Replace(s, @"\b(?<!\/)\d{4,}\b(?<!\/)", delegate(Match match) { string output = ""; string m = match.Value; int len = match.Length; for (int i = len - 1; i >= 0 ; i--) { output = m[i] + output; if ((len - i) % 3 == 0) output = "," + output; } if (output.StartsWith(",")) output = output.Substring(1, output.Length-1); return output; }); In a related question, there is a very clever number comma insertion regex proposed: text = Regex.Replace(text, @"(?<=\d)(?=(\d{3})+$)", ",") However this requires an end anchor $ which, as you can see, I don't have in the above text -- the numbers are "floating" in the rest of the text. I suspect there is a cleaner way to do this than my solution? After writing this, I just realized I could combine them, and put one Regex inside the other, like so: return Regex.Replace(s, @"\b(?<!\/)\d{4,}\b(?<!\/)", delegate(Match match) { return Regex.Replace(match.Value, @"(?<=\d)(?=(\d{3})+$)", ","); });

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  • How can I share variables between a base class and subclass in Perl?

    - by Jonathan
    I have a base class like this: package MyClass; use vars qw/$ME list of vars/; use Exporter; @ISA = qw/Exporter/; @EXPORT_OK = qw/ many variables & functions/; %EXPORT_TAGS = (all => \@EXPORT_OK ); sub my_method { } sub other_methods etc { } --- more code--- I want to subclass MyClass, but only for one method. package MySubclass; use MyClass; use vars qw/@ISA/; @ISA = 'MyClass'; sub my_method { --- new method } And I want to call this MySubclass like I would the original MyClass, and still have access to all of the variables and functions from Exporter. However I am having problems getting the Exporter variables from the original class, MyClass, to export correctly. Do I need to run Exporter again inside the subclass? That seems redundant and unclear. Example file: #!/usr/bin/perl use MySubclass /$ME/; -- rest of code But I get compile errors when I try to import the $ME variable. Any suggestions?

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  • In Ruby, what is good way to filter all the methods of an object that contain the word "time" in it?

    - by Jian Lin
    I tried the following and it was partly working: >> s.methods.map {|n| n if n =~ /time/} => [nil, nil, nil, nil, nil, nil, nil, nil, "skip_time_zone_conversion_for_attri butes", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, ni l, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, ni l, "timestamped_migrations", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, "time_zone_aware _attributes", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, "default_timezone", nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, "recor d_timestamps", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil] >> s.methods.each {|n| p n if n =~ /time/} "skip_time_zone_conversion_for_attributes" "timestamped_migrations" "time_zone_aware_attributes" "default_timezone" "record_timestamps" => ["extended_by", "before_create", "vote_ids=", "save_without_dirty", "_delete" , "touch", "daemonize", "after_destroy", "skip_time_zone_conversion_for_attribut es", "methods", "send", "to_query", "becomes", "after_validation", "store_full_s ti_class?", "save_with_transactions!", "autosave_associated_records_for_votes", "require_library_or_gem", "enum_for", "taint", "instance_variable_defined?", "ac [...] and the rest of the whole array >> s.methods.filter {|n| n =~ /time/} NoMethodError: undefined method `filter' for #<Array:0x4de6b00> from (irb):93

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  • x86_64 Assembly Command Line Arguments

    - by Brandon oubiub
    I'm new to assembly, and I just got familiar with the call stack, so bare with me. To get the command line arguments in x86_64 on Mac OS X, I can do the following: _main: sub rsp, 8 ; 16 bit stack alignment mov rax, 0 mov rdi, format mov rsi, [rsp + 32] call _printf Where format is "%s". rsi gets set to argv[0]. So, from this, I drew out what (I think) the stack looks like initially: top of stack <- rsp after alignment return address <- rsp at beginning (aligned rsp + 8) [something] <- rsp + 16 argc <- rsp + 24 argv[0] <- rsp + 32 argv[1] <- rsp + 40 ... ... bottom of stack And so on. Sorry if that's hard to read. I'm wondering what [something] is. After a few tests, I find that it is usually just 0. However, occasionally, it is some (seemingly) random number. EDIT: Also, could you tell me if the rest of my stack drawing is correct?

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  • How do i transfer this unmanaged code from asp to asp.net 2/mvc?

    - by melaos
    hi guys, i'm a newbie to ASP.net interop features, so what i have right here is some unmanaged dll that i need to call from my asp.net mvc app. the dll name is CTSerialNumChecksum.dll set CheckSumObj = Server.CreateObject("CTSerialNumChecksum.CRC32API") validSno = CheckSumObj.ValidateSerialNumber(no) i know it's unmanaged because when i try to add reference to the dll it doesn't work. i try to follow some tutorials on interop and marshalling but thus far i wasn't able to get the code to work. i'm trying to wrap the object into another static class and just let the rest of the app to call the code. using System; using System.Runtime.InteropServices; namespace OnlineRegisteration.Models { public static class SerialNumberChecksum { [DllImport("CTSerialNumChecksum")] public static extern int ValidateSerialNumber(string serialNo); } } Questions: How do i write the class? And what tool can i use to identify what type of dll a particular file is, i.e. unmanaged c++, etc? Also i intend to make use jquery to do ajax call later so i can use this to validate my form pre-submission. Is there a better way to handle this?

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  • CFHost DNS Resolution - When is it OK to use synchronous API?

    - by Jasarien
    I went to the iPhone Developer Tech Talk a few months ago and asked one of the gurus there about the lack of NSHost on the iPhone. Some code I was porting to the iPhone made significant use of NSHost throughout its networking code. I was told that NSHost is on the iPhone, but its private. I was also told that NSHost is a synchronous API and that I shouldn't use it anyway. (If anyone could elaborate on why it shouldn't be used, as a bonus, that'd be great.) I can see the caveats of using synchronous API's on the main thread in that they'll block until complete - and that's never a good thing with network code because there are so many factors that could cause the API to block the thread for a significant amount of time. My solution was to write a wrapper around CFHost's asynchronous resolution functions. The result works quite well, and I'm considering releasing it into the public domain. But my question is this: Say my app only resolves a hostname once per run, during the connecting phase, and then cache's it for the rest of the session. During the time it is resolving, a modal screen is shown telling the user "Connecting" with a nice spinner. Does it really matter whether or not the resolution is asynchronous?? The user has to wait to connect anyway, and the resolution is only done on the first connection. Subsequent connections use the cached result of the resolution. When is it OK to be synchronous and when should things be asynchronous?

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  • .NET regex's not working - 1# check beginning of text entered #2 check structure

    - by Olly
    OK it has unfortunately been a while since I've used REGEX and I am struggling to wonder why its not working with my project. I have used Regex Tester which says my two tests are valid but when it comes to testing in my project they get rejected. 1) Check the text starts with certain characters [RegularExpression("(spAPP)",ErrorMessage = "Stored procedures must begin with spAPP")] This seems to accept spAPP on it's own, but not something like spAPPabcdef which I want it to. I am struggling to find the "Ignore rest of the text" attribute with REGEX. 2) A bit more complicated. I have certain naming conventions for AD groups, so an example would be "UK ROLE IT APPLICATION DEV ADMIN", up to the role name there are standards (so I need the "UK ROLE IT APPLICATION DEV" checked. [RegularExpression(@"((UK|FRANCE|GERMANY|USA)\s(ROLE)\s(IT|NON-IT)\s(APPLICATION)\s(DEV|TEST|LIVE))", ErrorMessage = "Please use AD naming standards.")] I think it might be the fact I am using () around all the words, but its easier to read in my code. The RegexTester I found seems to indicate that it's right, but again, in my .NET project, it rejects it. Thanks,

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  • Python Twitter library: which one?

    - by Parand
    I realize this is a bit of a lazyweb question, but I wanted to see which python library for Twitter people have had good experiences with. I've used Python Twitter Tools and like its brevity and beauty of interface, but it doesn't seem to be one of the popular ones - it's not even listed on the Twitter Libraries page. There are, however, plenty of others listed: oauth-python-twitter2 by Konpaku Kogasa. Combines python-twitter and oauth-python-twitter to create an evolved OAuth Pokemon. python-twitter by DeWitt Clinton. This library provides a pure Python interface for the Twitter API. python-twyt by Andrew Price. BSD licensed Twitter API interface library and command line client. twitty-twister by Dustin Sallings. A Twisted interface to Twitter. twython by Ryan McGrath. REST and Search library inspired by python-twitter. Tweepy by Josh Roesslein. Supports OAuth, Search API, Streaming API. My requirements are fairly simple: Be able to use OAuth Be able to follow a user Be able to send a direct message Be able to post Streaming API would be nice Twisted one aside (I'm not using twisted in this case), have you used any of the others, and if so, do you recommend them? [Update] FWIW, I ended up going with Python Twitter Tools again. The new version supported OAuth nicely, and it's a very clever API, so I stuck to it.

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  • application packaging

    - by user285825
    The application packaging (software deliverables) is a vague concept to me. I worked in web application before so all I know how to prepare the deliverables ie WAR and then put them into the servlet container and rest of this being taken care of. But when considering other java or c++-based application (.exe or .class) how to prepare the package? What should be considered for preparation of the package and deployment of the application? Like I understand there should be some entries made into the windows registry or some libraries to be put in /usr/bin directory and so on. And during the development phase the execution and testing is done in more informal manner like writing some shell script or so on. But the deployment scenario is a more formal thing. As I said I have only the idea of deploying web applications I am not much knowledgeable in the other areas. Are there any kind of conventions like there are conventions for documentations like javadoc or doxygen/man pages? Application packaging is not that sort of a thing that there are much discussion on books or online materials. This is very disappointing.

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  • Facebook app getting "Warning: fopen......." - Please help!

    - by Poni
    Hello! I'm trying to establish a Facebook application. I'm getting the following PHP notice randomly: Warning: fopen(http://api.facebook.com/restserver.php? … &v=1.0) [function.fopen]: failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request in D:\projects........\facebookapi_php5_restlib.php on line 3391 As said, it happens randomly. My app configuration: IFrame Page host configuration: Windows Vista, Apache 2.2.11, PHP 5.1 No support for cURL is possible at the moment. My aim: Get the user's first name & pic_square along with two other preferences. If these two preferences are not set then I'll set them, after doing some internal job. I understand that the REST API is old. Which interface should I use then? Saw FQL, which seem to be fine, but I see no corresponding getUserPreference/setUserPreference interface. Where is it? How do I combine it with the "first name & pic_square" info that I need in one query? How do I read the results of multi-query query? Also, if I understand correctly, the FQL is also executed with the fopen() function, and as we see here it might fail. That means something went wrong, and then I want to handle it. Any suggestions how to do so efficiently? Less important than the above question though. Thank you all.

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  • embedded php in html to include header (top part of page) into the page

    - by Andy
    Hi there, I'm trying to put the top of my page (which is all html) in a seperate file so I only need to change things once like the menu bar etc. So I googled some and found a solution on this website as well, but it doesn't work and I don't know why. So I have a page like article.html and on the top I have this: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <?php include("/pages/header.php"); ?> <!-- rest of the html code --> In the header.php I have the html that should be on the top of each page and it starts with: <?php /** * @author name * website header */ ?> <!-- html code --> So what's wrong with this. When I open the page article.html and right click on it to view the source, I can see the php from above calling the header.php file. Thanks!

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  • function (blurClass) NOT WORKING IN IE

    - by Erik
    I can't get this plugin to function properly in IE.... Check out my homepage and look at the huge search field toward the top... www.naturalskin.com Whenever I refresh the screen the "blur" looses its function and I'm stuck with text..... Here is the script that I place in an external js page: http://www.naturalskin.com/src/js/javascript/batches.js jQuery.fn.hint = function (blurClass) { if (!blurClass) { blurClass = 'blur'; } return this.each(function () { // get jQuery version of 'this' var $input = jQuery(this), // capture the rest of the variable to allow for reuse title = $input.attr('title'), $form = jQuery(this.form), $win = jQuery(window); function remove() { if ($input.val() === title && $input.hasClass(blurClass)) { $input.val('').removeClass(blurClass); } } // only apply logic if the element has the attribute if (title) { // on blur, set value to title attr if text is blank $input.blur(function () { if (this.value === '') { $input.val(title).addClass(blurClass); } }).focus(remove).blur(); // now change all inputs to title // clear the pre-defined text when form is submitted $form.submit(remove); $win.unload(remove); // handles Firefox's autocomplete } }); }; Erik

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  • JQuery & Wordpress - Hide multiple divs inside unique ID?

    - by steelfrog
    I'm trying to write a short Wordpress JQuery for Wordpress comments that would allow users to toggle specific comments on and off. This is my first script, and I'm having a tough time. Once overtly simplified, the comments are formatted like so: <li id="li-comment-<?php comment_ID() ?>"> <div class="gravatar"><img src="#" /></div> <div class="comment_poster">Username</div> <div class="comment_options">Option buttons</div> <div class="comment_content">Comment</div> </li> In the "comment_options" DIV is a series of buttons that control the individual comments (reply, quote, edit, close, etc.). The close button is what I'm trying to write this script for. I need it to toggle the "gravtar" and "comment_content" DIVs, but leave the rest in place so that it still displays the user ID and controls. However, I can't seem to figure out how to contain the action. This is what I have so far: $(document).ready(function() { $("div.trigger").click(function() { $("div.gravatar").slideToggle(); $("div.comment_content").slideToggle(); }); }); The problem with this is that it closes are the .gravatar and .comment_content on the page, not just the ones found in the same list item. If you're curious, this is the page I'm working on. Any idea how I could resolve this? Again, this is my firs time with JQuery, so I'm a little fuzzy on how it all works. Thanks!

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  • Why is my multithreaded Java program not maxing out all my cores on my machine?

    - by James B
    Hi, I have a program that starts up and creates an in-memory data model and then creates a (command-line-specified) number of threads to run several string checking algorithms against an input set and that data model. The work is divided amongst the threads along the input set of strings, and then each thread iterates the same in-memory data model instance (which is never updated again, so there are no synchronization issues). I'm running this on a Windows 2003 64-bit server with 2 quadcore processors, and from looking at Windows task Manager they aren't being maxed-out, (nor are they looking like they are being particularly taxed) when I run with 10 threads. Is this normal behaviour? It appears that 7 threads all complete a similar amount of work in a similar amount of time, so would you recommend running with 7 threads instead? Should I run it with more threads?...Although I assume this could be detrimental as the JVM will do more context switching between the threads. Alternatively, should I run it with fewer threads? Alternatively, what would be the best tool I could use to measure this?...Would a profiling tool help me out here - indeed, is one of the several profilers better at detecting bottlenecks (assuming I have one here) than the rest? Note, the server is also running SQL Server 2005 (this may or may not be relevant), but nothing much is happening on that database when I am running my program. Note also, the threads are only doing string matching, they aren't doing any I/O or database work or anything else they may need to wait on. Thanks in advance, -James

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  • ASP.NET MVC View Engine Resolution Sequence

    - by intangible02
    I created a simple ASP.NET MVC version 1.0 application. I have a ProductController which has one action Index. In the view, I created a corresponding Index.aspx under Product subfolder. Then I referenced the Spark dll and created Index.spark under the same Product view folder. The Application_Start looks like protected void Application_Start() { RegisterRoutes(RouteTable.Routes); ViewEngines.Engines.Clear(); ViewEngines.Engines.Add(new Spark.Web.Mvc.SparkViewFactory()); ViewEngines.Engines.Add(new WebFormViewEngine()); } My expectation is that since the Spark engine registers before default WebFormViewEngine, when browse the Index action in Product controller, the Spark engine should be used, and WebFormViewEngine should be used for all other urls. However, the test shows that the Index action for Product controller also uses the WebFormViewEngine. If I comment out the registration of WebFormViewEnginer (the last line in the code), I can see that the Index action is rendered by Spark engine and the rest urls generates an error (since the defualt engine is gone), it proves that all my Spark code is correct. Now my question is how the view engine is resolved? Why the registration sequence does not take effect?

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  • iphone certain PDFs rendering as black image

    - by skantner
    I'm trying to draw the pages of a PDF using the code below. Some PDF's render correctly, but others simply show as a completely black image, or have partial portions rendered and the rest black. In comparing what's going on, the ones that show OK seem to have always have "regular" text in them along with some graphics (diagrams, etc.), while the ones that come out black are typically all graphics (like a page of sheet music, for example). Can anyone point me in the right direction on this? I building this on the new 3.2 SDK. Thanks! // PDF page drawing expects a Lower-Left coordinate system, so we flip the coordinate system // before we start drawing. CGContextTranslateCTM(context, 0.0, self.bounds.size.height); CGContextScaleCTM(context, 1.0, -1.0); // Grab the first PDF page CGPDFPageRef page = CGPDFDocumentGetPage(myPDF, pageNo); // We're about to modify the context CTM to draw the PDF page where we want it, so save the graphics state in case we want to do more drawing CGContextSaveGState(context); // CGPDFPageGetDrawingTransform provides an easy way to get the transform for a PDF page. It will scale down to fit, including any // base rotations necessary to display the PDF page correctly. CGAffineTransform pdfTransform = CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, self.bounds, 0, true); // And apply the transform. CGContextConcatCTM(context, pdfTransform); // Finally, we draw the page and restore the graphics state for further manipulations! CGContextDrawPDFPage(context, page); CGContextRestoreGState(context);

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  • trying to make a simple grid-class, non-lvalue in assignment

    - by Tyrfing
    I'm implementing a simple C++ grid class. One Function it should support is accessed through round brackets, so that I can access the elements by writing mygrid(0,0). I overloaded the () operator and i am getting the error message: "non-lvalue in assignment". what I want to be able to do: //main cGrid<cA*> grid(5, 5); grid(0,0) = new cA(); excerpt of my implementation of the grid class: template class cGrid { private: T* data; int mWidth; int mHeight; public: cGrid(int width, int height) : mWidth(width), mHeight(height) { data = new T[width*height]; } ~cGrid() { delete data; } T operator ()(int x, int y) { if (x >= 0 && x <= mWidth) { if (y >= 0 && y <= mHeight) { return data[x + y * mWidth]; } } } const T &operator ()(int x, int y) const { if (x >= 0 && x <= mWidth) { if (y >= 0 && y <= mHeight) { return data[x + y * mWidth]; } } } The rest of the code deals with the implementation of an iterator and should not be releveant.

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  • Understanding byte order and functions like CFSwapInt32HostToBig

    - by Typeoneerror
    I've got an enumeration in my game. A simple string message with an appended PacketType is being sent with the message (so it knows what to do with the message) over GameKit WIFI connection. I used Apple's GKRocket sample code as a starting point. The code itself is working fantastically; I just want to understand what the line with CFSwapInt32HostToBig is doing. What on earth does that do? and why does it need to do it? My guess is that it's making sure the PacketType value can be converted to an unsigned integer so it can send it reliably, but that doesn't sound all that correct to me. The documentation states "Converts a 32-bit integer from big-endian format to the host’s native byte order." but I don't understand what the means really. typedef enum { PacketTypeStart, // packet to notify games to start PacketTypeRequestSetup, // server wants client info PacketTypeSetup, // send client info to server PacketTypeSetupComplete, // round trip made for completion PacketTypeTurn, // packet to notify game that a turn is up PacketTypeRoll, // packet to send roll to players PacketTypeEnd // packet to end game } PacketType; // .... - (void)sendPacket:(NSData *)data ofType:(PacketType)type { NSLog(@"sendPacket:ofType(%d)", type); // create the data with enough space for a uint NSMutableData *newPacket = [NSMutableData dataWithCapacity:([data length]+sizeof(uint32_t))]; // Data is prefixed with the PacketType so the peer knows what to do with it. uint32_t swappedType = CFSwapInt32HostToBig((uint32_t)type); // add uint to data [newPacket appendBytes:&swappedType length:sizeof(uint32_t)]; // add the rest of the data [newPacket appendData:data]; // Send data checking for success or failure NSError *error; BOOL didSend = [_gkSession sendDataToAllPeers:newPacket withDataMode:GKSendDataReliable error:&error]; if (!didSend) { NSLog(@"error in sendDataToPeers: %@", [error localizedDescription]); } }

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  • java BufferedReader specific length returns NUL characters

    - by Bastien
    I have a TCP socket client receiving messages (data) from a server. messages are of the type length (2 bytes) + data (length bytes), delimited by STX & ETX characters. I'm using a bufferedReader to retrieve the two first bytes, decode the length, then read again from the same bufferedReader the appropriate length and put the result in a char array. most of the time, I have no problem, but SOMETIMES (1 out of thousands of messages received), when attempting to read (length) bytes from the reader, I get only part of it, the rest of my array being filled with "NUL" characters. I imagine it's because the buffer has not yet been filled. char[] bufLen = new char[2]; _bufferedReader.read(bufLen); int len = decodeLength(bufLen); char[] _rawMsg = new char[len]; _bufferedReader.read(_rawMsg); return _rawMsg; I solved the problem in several iterative ways: first I tested the last char of my array: if it wasn't ETX I would read chars from the bufferedReader one by one until I would reach ETX, then start over my regular routine. the consequence is that I would basically DROP one message. then, in order to still retrieve that message, I would find the first occurence of the NUL char in my "truncated" message, read & store additional characters one at a time until I reached ETX, and append them to my "truncated" messages, confirming length is ok. it works also, but I'm really thinking there's something I could do better, like checking if the total number of characters I need are available in the buffer before reading it, but can't find the right way to do it... any idea / pointer ? thanks !

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  • Crystal Reports Failed Database Login

    - by Marlon
    Hello, After spending a good 3 to 4 hours on google trying to find any solution to my problem I haven't had much luck. Basically, we use crystal reports for our .NET applications with a sql server back end, we have many clients each with their own server and so our reports need to have their connections dynamically set. Up until a week ago this worked fine. However a few days ago a client reported they were getting a database login prompt for a report (only one report, the rest worked fine). We were quite stumped but we managed to reproduce it on a netbook which didn't have visual studio or sql server installed. In the end the dev decided to reproduce the report in the hope it was just an oddity in that particular report. Unfortunately a new client today also experienced the same problem, but this time for every crystal report they had - and also they worked on the netbook, so we are really quite lost here. Below is a screenshot of what our clients get presented with - and here is the code that I use to set the connection information in the report cI.ServerName = (string)builder["Data Source"]; cI.DatabaseName = (string)builder["Initial Catalog"]; cI.UserID = (string)builder["User ID"]; cI.Password = (string)builder["Password"]; foreach (IConnectionInfo info in cryRpt.DataSourceConnections) { info.SetConnection(cI.ServerName, cI.DatabaseName, cI.UserID, cI.Password); } foreach (ReportDocument sub in cryRpt.Subreports) { foreach (IConnectionInfo info in sub.DataSourceConnections) { info.SetConnection(cI.ServerName, cI.DatabaseName, cI.UserID, cI.Password); } } As always, any help much appreciated.

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