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• How to add Transparency information to a HEX color code?

  - by TK123

  I have to modify some code and the previous developer left this comment: color: color, // e.g. '#RRGGBBFF' - Last 2 digits are alpha information On the page there is a color picker that let's the user change text color. It gives HEX values like so: #RRGGBB And there is a slider that allows the user to change a text's transparency. It runs from 0.1 to 1 Somehow I need to get a 2 digit letter from this transparency amount and append it to the HEX value for it to work. Does anyone know how to append Alpga information to HEX color codes? What is the math formula for it? I guess the question can also be answered if anyone knows how to concert RGBA color values with transparency into HEX: rgba(255, 255, 255, 0.6)

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• antlr: Best practice to integrate generated parser into the system

  - by green

  Here is the background, I am trying to create a DSL to allow customer write simple scripts to query into our mongodb based database. I choose antlr to implement the DSL. From my understanding (and pls let me know if it's not correct) there are 2 approaches to integrate antlr generated parser into the system: Embed code into the grammar file so that the generated parser could be used directly to make query to the database and return result in a certain format (e.g. json encoded) Keep the parser purely a parser, after feed the DSL file to it, and construct the query in another class by retrieving the AST from generated parser class So antlrers, which one do you think is the way I as an antlr newbie should go? Can you list the pros and cos of each approach, or you have other way to recommend?

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• build adobe air to use YouTube API v2.0

  - by Hadi

  I'm trying to use YouTube API v2.0 to let users authenticate into their YouTube account and be able to upload videos from there... but I want to do this application in AS3 as an adobe air application. I searched the api but I couldn't find any proof that I can do this with AS3? thought to drop a line here and ask if it's possible at all? specially being able to upload videos through the adobe air desktop app? If possible, is there any link you could give me to get me started faster?

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• How do I obtain an HtmlHelper<TModel> instance for a model in ASP.NET MVC?

  - by DanM

  Let's say I have an Index view. The model I pass in is actually a collection of models, so the Html property is of type HtmlHelper<List<MyModel>>. If I want to call extension methods (e.g., Display() or DisplayFor() on the individual items in the list, however, I think I need to obtain an HtmlHelper<MyModel>. But how? I tried using the HtmlHelper<TModel> constructor, which looks like this: HtmlHelper<TModel>(ViewContext, IViewDataContainer) But I'm not having any luck with that. I don't know how to obtain the IViewDataContainer for the item, and the documentation on these things is very sparse. A lot of magic apparently happens when I do... return View(List<MyModel>); ...in my controller. How do I recreate that magic on individual items in a list/collection?

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• How can I use git to stage only one line in a file for commit, all from a script?

  - by Sandy

  I'm writing a simple pre-commit git hook that updates the year in copyright headers for files that are staged for commit. After modifying the line with the copyright, I would like the hook to stage that line so that it is part of the commit. It can't just git add the whole file, because there may be other pre-existing changes in there that shouldn't be staged. I don't see any options in the git add manual the let you stage specific lines. I figure I could git stash save --keep-index, apply my change, git add the file, and then git stash pop, but that seems rather crude. Any better approaches?

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• jQuery .ajax request failing

  - by user1644808

  I currently have a jQuery ajax request set up like this $(document).ready( function() { $.ajax({ url : "http://www.my-computer.com:51000/getJson", cache : false, dataType: "json", success : renderPage, error: handleError }) }); If I manually naviate to http://www.my-computer.com:51000/getJson, I see it returns a json string correctly, but with the above request, I always fall into "handleError" method, with textStatus "error" and not much helpful information. Can anyone help? Thanks! EDIT: sorry about the my-computer domain. this stackoverflow submission won't let me input localhost, so I put in an arbitrary domain instead. I've tried firebug, but had no luck in getting the json back.

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• [AS 3.0] How to use the string.match method to find multiple occurrences of the same word in a strin

  - by Steven

  In Actionscript and Adobe Flex, I'm using a pattern and regexp (with the global flag) with the string.match method and it works how I'd like except when the match returns multiple occurrences of the same word in the text. In that case, all the matches for that word point only to the index for the first occurrence of that word. For example, if the text is "cat dog cat cat cow" and the pattern is a search for cat*, the match method returns an array of three occurrences of "cat", however, they all point to only the index of the first occurrence of cat when i use indexOf on a loop through the array. I'm assuming this is just how the string.match method is (although please let me know if i'm doing something wrong or missing something!). I want to find the specific indices of every occurrence of a match, even if it is of a word that was already previously matched. I'm wondering if that is just how the string.match method is and if so, if anyone has any idea what the best way to do this would be. Thanks.

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• Stackoverflow interesting tags

  - by Tom

  So, that's how works Interesting Tags: I add into them my interested tags like php, mysql, jquery and so on. Then, if any of questions has the same tags as mine it makes background orange. I understand how to use jquery to do that (there were related questions to that), but without mysql it can't be done. Now, here is a question. How is it done? I imagine like that: There is a row in mysql for every member, let's call it "interested_tags". After I write and submit my tag through input, it is being written in a row "interested_tags". Then, the main page has a query which shows all answers and it always checks answer's with mine tags with strpos like this if(strpos($question_tags, $my_tags) === true) {        //and here will be made background orange } Am I thinking right or is there any way to do it?

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• QT Question - What are all these extra spaces for ? (pic provided)

  - by mea

  stack overflow wont let me post images so heres the link: http://4m0.org/images/qt.png This is my application. For this question, ignore the top part with the buttons. I have a QScrollArea Filled with many QGroupBoxes Filled with a horizontal box layout of QLabel (on the left) and QGroupBox (on the right) The right side is a vertical box layout of QPushButtons Every single element, the scrollarea, both boxes, the labels, and the buttons all have their style sheets modified so padding is 0px and margin is 0px. Why do i have all this extra space? The scroll area has space on all sides until its inner elements (the blue boxes) start. Then those boxes have space until its inner elements (the white boxes) start. Can someone tell me what is going on?

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• Update existing columns and rows within csv file using Python

  - by wilbev

  So I've been attempting to use the csv module in Python to add data to existing rows and columns, but only specific columns of each row. So for examples let's say my existing csv file has the following: id, name, city, age 1, Ed,, 34 2, Pat,, 23 So basically the city of each person is missing, so I would like to update each row with that person's city. However, the writerow method only seems replace the existing data within the csv file. Changing the open file to append mode just adds the data to a new row. Is there any way to skip the existing data, and only add the city to each row? Thanks

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• PHP - displaying 1 random record for each week

  - by mike

  I want to display 1 random record from a database based on the week. I need to determine if it's a new, and if it is a new week, then select the record and display the new record. I'm thinking I can just use a single day of the week to generate the new record, either way will work. I'm really having a hard time conceptualizing how I'll store the record id and not select a new one when someone visits again the same day or refreshes the page. Any ideas? Let me know if I wasn't clear enough.

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• jQuery display problem?

  - by SLAPme

  How do I hide the #changes-saved code using jQuery? For example let's say the code is displayed when the user clicks the submit button and then leaves the current web page and then returns back to the web page and the #changes-saved is no longer displayed until the submit button is clicked again. Here is the jQuery code. $(function() { $('#changes-saved').hide(); $(".save-button").click(function() { $.post($("#contact-form").attr("action"), $("#contact-form").serialize(), function(html) { $("div.contact-info-form").html(html); $('#changes-saved').append('<li>Changes saved!</li>').show().pause(1000).hide(); }); return false; // Prevent normal submit. }); });

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• Hide twitter bootstrap popover

  - by soft genic

  Following is my jquery code which i am using to display popover . What i wanna do is when a user click anywhere on the screen or on any <span id="close" class="pover"></span> then it hides the current opened popover and show a new popover on which the user clicks on. As You can see below span which contains class="pover" are being poped up by the following jquery kindly let me know how can i hide the opened popup and display a new one accordingly Currently, all the popover are getting displayed on click event. $(document).ready(function() { $('.pover').each(function() { //$('#close').popover( "hide" ); $(this).popover({ title: $(this).attr('abc'), content: $(this).attr('data-content'), delay: "show", trigger: "click" }); }); });

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• Allow users to enter a variable length list of items in asp.net form

  - by EJB

  I need to let my users enter a variable length list of items into something that looks like a grid view (or a series of standard text boxes stacked vertically). Each item could be a few characters or a few hundred characters long, and I just want them to enter a "sentence", and then tab to the next row, and always having another blank one ready to go at the bottom of the list. I don't want to save any data to my SQL Server DB until they enter the entire list and then click on a "save all" button. When they hit the "save all" button they will be given a preview screen where the data will be presented as standard HTML ordered list. If they confirm/save, then each row of the grid will then be saved as a separate row into my SQL Server database (with an index to remember the order). What ASP.Net (or Jquery/javascript) UI control would be the best to use in this situation?

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• How to call a custom php file on magento product page

  - by David

  if getChildHtml('product_type_data') ? maps directly to catalog/product/view/type/simple.phtml by default, how do I map to my own file? If I wanted to create a file that would produce a small image to place on the product page, right under "availability" how would I tell magento to map to where I have put the file? From what I understand getChildHtml('product_type_data') ? defaults to the file path: catalog/product/view/type/simple.phtml so how can I customize the magento defaults and tell it to map to my custom files i've created? I hope I have explained this well enough, if not, please let me know and I will try to explain more. Any help or guidance would be awesome. Thanks.

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• I can't use achiva as a proxy of my remote repository

  - by user1553915

  I want to install Achiva to manage my Maven repositories. I add a new internal repository called "public" and a new remote repository, which is my company's repository. Then I configure the proxy connector to let the repository "public" to be a proxy of the remote one. But When I enter the address "http://localhost:8084/archiva/repository/public/.../....pom" in the web brower,error occurred "Unable to fetch artifact resource". However, if I replace the remote repository with another one such as "http://repository.codehaus.org/", the proxy works. I don't know why this happens, are there something wrong with my remote repository address?

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• How do I rotate a single object on an html 5 canvas?

  - by Kappers

  I'm trying to figure out how to rotate a single object on an html 5 canvas. For example: http://screencast.com/t/NTQ5M2E3Mzct - I want each one of those cards to be rotated at a different degree. So far, all I've seen are articles and examples that demonstrate ways to rotate the entire canvas. Right now, I'm guessing I'll have to rotate the canvas, draw an image, and then rotate the canvas back to it's original position before drawing the second image. If that's the case, then just let me know! I just have a feeling that there's another way. Anyone have any idea? Thanks in advance!

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• Easy one? Access an object's property by using a variable in C# [closed]

  - by ozke

  Possible Duplicate: Property Name and need its value Hi, This one should be easy for most people. I'd like to access a normal variable in an object (let's say example) by using a variable value. E.g.: I have a an array with a list of variable names and I want to get the information from the object by using them. Obviously this is wrong: string[] variable_names = new string[] {"name", "surname"}; myObject.variable_names[0] = 1; myObject.variable_names[1] = 1; In other languages (not C#) I use: myObject[variable_names[0]] = 1; I know the example looks stupid but it was just a way of explaining it. Thanks in advance :)

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• Intersection between sets containing different types of variables

  - by Gacek

  Let's assume we have two collections: List<double> values List<SomePoint> points where SomePoint is a type containing three coordinates of the point: SomePoint { double X; double Y; double Z; } Now, I would like to perform the intersection between these two collections to find out for which points in points the z coordinate is eqal to one of the elements of values I created something like that: HashSet<double> hash = new HashSet<double>(points.Select(p=>p.Z)); hash.IntersectWith(values); var result = new List<SomePoints>(); foreach(var h in hash) result.Add(points.Find(p => p.Z == h)); But it won't return these points for which there is the same Z value, but different X and Y. Is there any better way to do it?

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• OPENGL Android getting the coordinates of my image

  - by Debopam

  I used the codes from the following the website. And it helped a lot to draw the required object on my screen. But the problem I am facing is getting the coordinates of my object. Let me explain. According to the code. You just need to add your graphic images in PNG format and refer it to the class here. What I am trying to achieve is a simple collision detection mechanism. I have added a maze (as PNG). And have a object (as PNG) to go through the blank path within the maze. In order to do this I need to know the blank spaces within the coordinates through which my object will move. Can any one tell me how to get the blank spaces as (x,y) coordinates through which I can take my object?

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• Using Java, can I have one JVM spawn another, and then have the original one exit?

  - by CarlG

  I have a need to have a running JVM start another JVM and then exit. I'm currently trying to do this via Runtime.getRuntime().exec(). The other JVM starts, but my original JVM won't exit until the "child" JVM process stops. It appears that using Runtime.getRuntime().exec() creates a parent-child relationship between the processes. Is there some way to de-couple the spawned process so that the parent can die, or some other mechanism to spawn a process without any relationship to the creating process? Note that this seems exactly like this question: http://stackoverflow.com/questions/2566502/using-java-to-spawn-a-process-and-keep-it-running-after-parent-quits but the accepted answer there doesn't actually work, at least not on my system (Windows 7, Java 5 and 6). It seems that maybe this is a platform-dependent behavior. I'm looking for a platform independent way to reliably invoke the other process and let my original process die.

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• Passing arguments to a python service

  - by Grim

  Hi, I need some help with a python service. I have a service written in Python. What I need to do is to pass it some arguments. Let me give you an example to explain it a bit better. Lets say I have a service, that does nothing but writes something to a log. I'd like to write the same thing into the log several times, so I use a loop. I would like to pass the counter for the loop when I start the service, but I have no idea how. I start the service with: win32serviceutil.HandleCommandLine(WinService) I'm looking for something like win32serviceutil.HandleCommandLine(WinService,10) I don't really care how its done, as long as I can pass arguments to it. Have been trying to get this to work for the better part of the day with no luck. Also, the service isn't run directly, but is imported and then run from there.

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• sIFR: dynamically inserting umlaut causes trouble

  - by arold

  Hi, let me state cleary at the beginning that I know about the embedding issue in flash. So, to the point. If sIFR replaces an umlaut (ä,ö,ü) which is hard coded in the HTML file everythings works fine. But when I want to insert it dynamically it is not displayed. I played around with charset options to specifiy the javascript file i'm referencing but it doesnt change a thing. Here's JavaScript and sIFR code: sIFR.replacements["#image-counter span"][0].replaceText("ö"); I tried as well to replace "ö" by "&ouml;" and "&#246" but this doesnt work around it either. Any ideas?

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• How do I tell gdb how long my zero-length array is?

  - by Joe

  Slightly oxymoronic title! Bonus points for Xcode answer but it's a gdb question. If I have a standard, statically sized array gdb will print all its elements [and Xcode will let me browse through it] but if I have a zero length array, it won't, because it doesn't know. Obviously I can print the array indexes one by one, but I'd like a dump of the whole thing. How do I tell gdb how much space I have allocated for the array to allow it to print the array (or to allow Xcode to view the array). Is it even possible?

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• Visual Studio ate my toobar :'(

  - by j-t-s

  Visual Studio ate my toolbar, I opened a solution for a project I've been working on for a few months, and the toolbar has 135 buttons on it, and while it was loading, the whole toolbar flickered like it was trying to give me a seizure or something, and then it dissappeared. Now when I click Debug, it won't let me do it because all the resources are missing!? I'm using: Visual Studio 2010 C# Express Windows 7 Home Premium 64-bit. I have searched Google and found nothing related. I'm hoping that Visual Studio can also somehow make bowel movements so I can find those missing resources and put everything back together again, but I don't think that's a likely scenario... Has anybody ever experienced this before, and if so, are there any updates/fixes for this?

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