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Search found 337 results on 14 pages for 'christopher klein'.

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  • In Javascript, is there a technique where I can execute code after a return?

    - by Christopher Altman
    Is there a technique where I can execute code after a return? I want to return a value then reset the value without introducing a temporary variable. My current code is: function(a){ var b; if(b){ var temp = b; //I want to avoid this step b = false; return temp; }else{ b = a; return false; }; }; I want to avoid the temp var. Is that possible? var b holds a value between function calls because it is a memoization styled function.

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  • Blurred PNGs on UIView, using Interface Builder

    - by Christopher Stamper
    Hey everyone, I've added some UIImageViews with png images to my view, using interface builder. Initially they are added off-screen. Later, I animate them onto the screen with CoreAnimation, like so: [UIView beginAnimations:@"slide" context:nil]; [UIView setAnimationDuration:0.1f]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDelegate:self]; image.frame = CGRectMake(81+1, 390, 150, 80); [UIView commitAnimations]; Once they appear onscreen, they look really blurred or fuzzy. I've heard of this happening before. Does anyone have any idea how to fix it?

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  • Does margin-left:2px; render faster than margin:0 0 0 2px;?

    - by Christopher Altman
    Douglas Crockford describes the consequence of Javascript inquiring a node's style. How simply asking for the margin of a div causes the browser to 'reflow' the div in the browser's rendering engine four times. So that made me wonder, during the initial rendering of a page (or in Crockford's jargon a "web scroll") is it faster to write CSS that defines only the non-zero/non-default values? To provide an example: div{ margin-left:2px; } Than div{ margin:0 0 0 2px; } I know consequence of this 'savings' is insignificant, but I think it is still important to understand how the technologies are implemented. Also, this is not a question about formatting CSS--this is a question about the implementations of browsers rendering CSS. Reference: http://developer.yahoo.com/yui/theater/video.php?v=crockonjs-4

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  • Using thrift to mix development languages

    - by christopher-mccann
    I am currently developing an application which will require multiple different development languages. I want to use PHP as the final piece of the puzzle - the physical web page construction. This PHP web app will need to contact multiple web services which could be coded in anything from Java to Erlang to Python. Each of these web services will be implemented with an API. My plan is to use Thrift to allow this mix to work. Is this the correct approach or am I mixing up what the whole point of Thrift is?

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  • Do I have to create a static library to test my application?

    - by Christopher Gateley
    I'm just getting started with TDD and am curious as to what approaches others take to run their tests. For reference, I am using the google testing framework, but I believe the question is applicable to most other testing frameworks and to languages other than C/C++. My general approach so far has been to do either one of three things: Write the majority of the application in a static library, then create two executables. One executable is the application itself, while the other is the test runner with all of the tests. Both link to the static library. Embed the testing code directly into the application itself, and enable or disable the testing code using compiler flags. This is probably the best approach I've used so far, but clutters up the code a bit. Embed the testing code directly into the application itself, and, given certain command-line switches either run the application itself or run the tests embedded in the application. None of these solutions are particularly elegant... How do you do it?

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  • MySQL get row closest to NOW()

    - by Christopher McCann
    I have a table with User data such as name, address etc and another table which has a paragraph of text about the user. The reason that they are separate is because we need to record all the old about data. So if the user changes their paragraph - the old one should still be stored. Each bit of about data has a primary key aboutMeID. What I want to do is have a join that pulls their name, address etc and the latest bit of aboutMe data from the other table. I am not sure though how I can order the join to only get the latest about me data. Can someone help?

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  • How do I add a .jar file to the compilation of .java files

    - by Christopher Schroeder
    My makefile is below Also, I would appreciate it if you told me how to move my .class files to ../bin/ JFLAGS = -cp JAR = "RSBot*.jar" JC = javac .SUFFIXES: .java .class .java.class: $(JC) $(JFLAGS) $(JAR) $*.java CLASSES = \ src/Banker.java \ src/Eater.java \ src/Fighter.java \ src/grotgui.java \ src/InventTab.java \ src/Looter.java \ src/Potter.java \ src/W8babyGrotworm.java \ src/Walker.java default: classes classes: $(CLASSES:.java=.class) clean: $(RM) *.class

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  • DRb connecting to linux client from windows

    - by Christopher Dancy
    I have a few DRb services running on different windows machines and they can all connect and talk with each other just fine. When I put these DRb services on Linux machines and try to connect from windows nothing happens and I get a DRB:ConnError ... the service on Linux is never touched. So I did a netstat on the linux box and the service(port) were not listed anywhere even though the program is clearly running. Is there someting that I'm missing when talking to DRb services on Linux from a windows machine?

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  • Ant task does not return properly if slept longer than 9 seconds executing from jruby.

    - by Christopher Dancy
    So here is a strange error/bug/idk ... I'm running jruby 1.4 with ant 1.8 ... from within jruby I execute an ant task with system(command_to_execute_ant_script) and everything works as expected ... however if the ant should sleep for longer than 9 seconds the script does not return EVER from within jruby. If the script sleeps for exactly 9 seconds or less the script returns properly. I've tried using jruby.1.5.0.rc1 as well as older versions of ant and still the same problem ... Any ideas?

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  • Multiple robots.txt for subdomains in rails

    - by Christopher
    I have a site with multiple subdomains and I want the named subdomains robots.txt to be different from the www one. I tried to use .htaccess, but the FastCGI doesn't look at it. So, I was trying to set up routes, but it doesn't seem that you can't do a direct rewrite since every routes needs a controller: map.connect '/robots.txt', :controller => ?, :path => '/robots.www.txt', :conditions => { :subdomain => 'www' } map.connect '/robots.txt', :controller => ?, :path => '/robots.club.txt' What would be the best way to approach this problem? (I am using the request_routing plugin for subdomains)

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  • What is recursion? -- In plain english.

    - by Christopher Altman
    I hear this word everyday, but cannot give a meaningful, concise, or plain-english answer to what it is. Recursion is defined by the bastian of knowledge as: Recursion in computer science is a method where the solution to a problem depends on solutions to smaller instances of the same problem.1 The approach can be applied to many types of problems, and is one of the central ideas of computer science.[2] Source Is recursion simply something that repeats itself to get a solution? I am looking for a "Recursion for Dummies" definition, and maybe simple examples. My goal is to be able to understand and explain recursion in my own words. I do not like simply thinking I know the meaning of something because I hear it referenced daily, but have not paused to form my own understanding.

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  • Implementing a scalable and high-performing web app

    - by Christopher McCann
    I have asked a few questions on here before about various things relating to this but this is more of a consolidation question as I would like to check I have got the gist of everything. I am in the middle of developing a social media web app and although I have a lot of experience coding in Java and in PHP I am trying things a bit different this time. I have modularised each component of the application. So for example one component of the application allows users to private message each other and I have split this off into its own private messaging service. I have also created a user data service the purpose of which is to return data about the user for example their name, address, age etc etc from the database. Their is also another service, the friends service, which will work off the neo4j database to create a social graph. My reason for doing all this is to allow me up to update seperate modules when I need to - so while they mostly all run off MySQL right now I could move one to Cassandra later if I thought it approriate. The actual code of the web app is really just used for the final construction. The modules behind it dont really follow any strict REST or SOAP protocol. Basically each method on our API is turned into a PHP procedural script. This then may make calls to other back-end code which tends to be OO. The web app makes CURL requests to these pages and POSTs data to them or GETs data from them. These pages then return JSON where data is required. I'm still a little mixed up about how I actually identify which user is logged in at that moment. Do I just use sessions for that? Like if we called the get-messages.php script which equates to the getMessages() method for that user - returning all the private messages for that user - how would the back-end code know which user it is as posting the users ID to the script would not be secure. Anyone could do that and get all the messages. So I thought I would use sessions for it. Am I correct on this? Can anyone spot any other problems with what I am doing here? Thanks

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  • display base64 image in html

    - by Christopher
    Having trouble displaying a base64 image inline. Can someone point me in the right direction? <!DOCTYPE html> <html> <head> <title>Display Image</title> </head> <body> <img style='display:block; width:100px;height:100px;' id='base64image' src='data:image/jpeg;base64, LzlqLzRBQ...<!-- base64 data -->' /> </body>

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  • C# Retrieving Data From XML File

    - by Christopher MacKinnon
    I seem to be having a problem with retrieving XML values with C#, which I know it is due to my very limited knowledge of C# and .XML. I was given the following XML file <PowerBuilderRunTimes> <PowerBuilderRunTime> <Version>12</Version> <Files> <File>EasySoap110.dll</File> <File>exPat110.dll</File> <File>pbacc110.dll</File> </File> </PowerBuilderRunTime> </PowerBuilderRunTimes> I am to process the XML file and make sure that each of the files in the exist in the folder (that's the easy part). It's the processing of the XML file that I have having a hard time with. Here is what I have done thus far: var runtimeXml = File.ReadAllText(string.Format("{0}\\{1}", configPath, Resource.PBRuntimes)); var doc = XDocument.Parse(runtimeXml); var topElement = doc.Element("PowerBuilderRunTimes"); var elements = topElement.Elements("PowerBuilderRunTime"); foreach (XElement section in elements) { //pbVersion is grabbed earlier. It is the version of PowerBuilder if( section.Element("Version").Value.Equals(string.Format("{0}", pbVersion ) ) ) { var files = section.Elements("Files"); var fileList = new List<string>(); foreach (XElement area in files) { fileList.Add(area.Element("File").Value); } } } My issue is that the String List is only ever populated with one value, "EasySoap110.dll", and everything else is ignored. Can someone please help me, as I am at a loss.

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  • Connecting a PHP front-end to a back-end java service

    - by christopher-mccann
    I am currently using various back-end services and I want to use PHP to simply query these services and perform the final page construction. These services could be coded in any number of programming langauges such as Erlang, Java, Python etc. However I am unsure of the best way to actually interface the back-end services with the web app. Requests to these services would be both synchronous and asynchronous. Would I use something like SOAP or JSON-RPC?? Any help greatly appreciated.

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  • Mass update of data in sql from int to varchar

    - by Christopher Kelly
    we have a large table (5608782 rows and growing) that has 3 columns Zip1,Zip2, distance all columns are currently int, we would like to convert this table to use varchars for international usage but need to do a mass import into the new table convert zip < 5 digits to 0 padded varchars 123 becomes 00123 etc. is there a way to do this short of looping over each row and doing the translation programmaticly?

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  • gwtQuery's outerWidth(true) and IE8 not working without putting a delay

    - by Christopher
    I recently came across an odd behavior when trying to calculate the width (with margins) of an element using gwtQuery. The goal is to get the width (including padding, borders and margins) of a given element as a child of a certain parent. This parent may define specific CSS rules for some children so I clone it, add my element to this parent, call .outerWidth(true) to get the width and finally remove the clone from the parent. It works fine on Chrome, Firefox and IE 10, but randomly fails (outputs 0) on IE 8. However I noticed that if I put a "sleep" between the moment I add the element to the DOM and the moment I get the outer width, it always succeeds. I obviously don't want to keep that sleep. So my question is does anyone has any insights on how to work around this behavior or even a better way of achieving the same goal? Thank you! Here's a code snippet private Integer computeTabWidth(IsWidget tab) { GQuery $tab = $("<li></li>").append($(tab).clone()); $(containerPanel).append($tab); // IE 8 debug. sleep(100); Integer tabWidth = $tab.outerWidth(true); $tab.remove(); return tabWidth; } private void sleep(int i) { long time = new Date().getTime() + i; while (time > new Date().getTime()); }

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