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  • Make a USB Device, Control It In Java

    - by yar
    I'm thinking about making a physical controller (device?) with knobs, buttons, and LEDs. I'd like to interact with it using Java (respond to the knobs, light up LEDs, etc). The reason I mention Java is two-fold: first, I know Java well1. Second, I've written the rest of the program I need to interface with in Java (though there are ways to talk to the Java program from another language). I would like the device to connect via USB and be (computer-)platform independent. I haven't the slightest idea of where to start, except to start reading the Arduino website. Is this my best/only option? Is there something better suited for communicating with Java? Note: I know that Arduino has something to do with Java (not sure what), but it seems like code must be written in a subset of C. How would I get moving on this topic? 1 - No laughter, please.

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  • What is an appropriate way to programmatically exit an application?

    - by denchr
    I am evaluating user inputs as commands for my application. If the user presses Q, or q, and then hits enter, the application quits and execution terminates. Is there a proper context, or best practices on how to do that? I do not have any resources to release, or anything like that. Should I just use System.exit(0);? Is there a recommended way to do that? As my first approach I do something like this: while (true){ try{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); //Other logic goes here... if (br.readLine().equalsIgnoreCase("Q")){ System.exit(0); } } catch (IOException ioe) { System.out.println("IO error trying to read your selection"); } }

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  • Copy a value based on criteria Salesforce

    - by Robert
    Hi all, On a Salesforce.com opportunity I have a number of custom fields that are potential options that the end client will eventually select. Option 1 (Desc Field) Option 1 (Value) Option 2 (Desc Field) Option 2 (Value) Option 3 (Desc Field) Option 3 (Value) At a future point the user will ultimately choose one of the options as the preferred option. What I want is then the value for the chosen option to be stored in another field without the user having to enter it again. A “nice to have” would also be that all 3 option descriptions, values and selected value are locked once this is done. Any ideas?

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  • Line formatting with Ruby.

    - by dbtek
    There is a text file containing words with 1 space between each of them. And there is also a command line entry that gives the length of line (output) wanted. Output will be words that fit into the length of the line (taken from command line). Also the first word will be on the left side of the line and the last word will be right side of it. The spaces between each word will be same. Any help will be appreciated thanks for replying.

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  • Python: How can I read in the characters from a line in a file and convert them to floats and strs, depending on if they are numbers or letters?

    - by user1467577
    I have a file that looks like: 1 1 C C 1.9873 2.347 3.88776 1 2 C Si 4.887 9.009 1.21 I would like to read in the contents of the file, line-by-line. When I only had numbers on the lines I used: for line in readlines(file): data = map(float, line.split) But this only works when all the elements of line.split are numbers. How can I make it store the letters as strings and the numbers as floats?

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  • C#: reading in a text file more 'intelligently'

    - by DarthSheldon
    I have a text file which contains a list of alphabetically organized variables with their variable numbers next to them formatted something like follows: aabcdef 208 abcdefghijk 1191 bcdefga 7 cdefgab 12 defgab 100 efgabcd 999 fgabc 86 gabcdef 9 h 11 ijk 80 ... ... I would like to read each text as a string and keep it's designated id# something like read "aabcdef" and store it into an array at spot 208. The 2 issues I'm running into are: I've never read from file in C#, is there a way to read, say from start of line to whitespace as a string? and then the next string as an int until the end of line? given the nature and size of these files I do not know the highest ID value of each file (not all numbers are used so some files could house a number like 3000, but only actually list 200 variables) So how could I make a flexible way to store these variables when I don't know how big the array/list/stack/etc.. would need to be.

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  • Is it me or is pygame.key.get_pressed() not working?

    - by user1321527
    okay, so I am making a basic space-ship game. I can't get rotation to work because it scrambles the bitmap, but that's for another question.Should I even use a gif? any other filetype suggestions? back to the actual point here, so: k = pygame.key.get_pressed() yeah, self explanatory. this doesn't work, as it returns each key as pressed. so, somewhere else: d = k[pygame.K_d] and another line: print d and another: if d: So, k returns as each key on the keyboard pressed. d returns 0 indefinitely, whether or not d is pressed. d is always 0. the statement about d therefore is never true. Why is this happening?

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  • Has anyone succeeded in converting files to the mpg-format that a Sony Digital Camera can play?

    - by user645552
    I'm trying to play a mpeg movie on my Sony Cybershot digital camera, it's from a DV-camera converted to MPEG1. But sony refuses to play it with File error. The only files sony can play are from my previous Sony camera. The other way around gives no problem, the movies the camera takes play on various software media players. Has anyone succeeded in converting files to the mpg-format that a Sony Digital Camera can play?

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  • ASP.Net MVC - how to post values to the server that are not in an input element

    - by David Carter
    Problem As was mentioned in a previous blog I am building a web page that allows the user to select dates in a calendar and then shows the dates in an unordered list. The problem now is that those dates need to be sent to the server on page submit so that they can be saved to the database. If I was storing the dates in an input element, say a textbox, that wouldn't be an issue but because they are in an html element whose contents are not posted to the server an alternative strategy needs to be developed. Solution The approach that I took to solve this problem is as follows: 1. Place a hidden input field on the form <input id="hiddenDates" name="hiddenDates" type="hidden" value="" /> ASP.Net MVC has an Html helper with a method called Hidden() that will do this for you @Html.Hidden("hiddenDates"). 2. Copy the values from the html element to the hidden input field before submitting the form The following javascript is added to the page:        $(function () {          $('#formCreate').submit(function () {               PopulateHiddenDates();          });        });            function PopulateHiddenDates() {          var dateValues = '';          $($('#dateList').children('li')).each(function(index) {             dateValues += $(this).attr("id") + ",";          });          $('#hiddenDates').val(dateValues);        } I'm using jQuery to bind to the form submit event so that my method to populate the hidden field gets called before the form is submitted. The dateList element is an unordered list and by using the jQuery each function I can itterate through all the <li> items that it contains, get each items id attribute (to which I have assigned the value of the date in millisecs) and write them to the hidden field as a comma delimited string. 3. Process the dates on the server        [HttpPost]         public ActionResult Create(string hiddenDates, string utcOffset)         {            List<DateTime> dates = GetDates(hiddenDates, utcOffset);         }         private List<DateTime> GetDates(string hiddenDates, int utcOffset)         {             List<DateTime> dates = new List<DateTime>();             var values = hiddenDates.Split(",".ToCharArray(),StringSplitOptions.RemoveEmptyEntries);             foreach (var item in values)             {                 DateTime newDate = new DateTime(1970, 1, 1).AddMilliseconds(double.Parse(item)).AddMinutes(utcOffset*-1);                 dates.Add(newDate);                }             return dates;         } By declaring a parameter with the same name as the hidden field ASP.Net will take care of finding the corresponding entry in the form collection posted back to the server and binding it to the hiddenDates parameter! Excellent! I now have my dates the user selected and I can save them to the database. I have also used the same technique to pass back a utcOffset so that I know what timezone the user is in and I can show the dates correctly to users in other timezones if necessary (this isn't strictly necessary at the moment but I plan to introduce times later), Saving multiple dates from an unordered list - DONE!

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  • Using sscanf for the dynamic delimiters (inputted by users) in parsing an input string in C? [migrated]

    - by Zuhakasa
    I'm encountering a problem in parsing a string using sscanf() function. My function gets 2 string parameters. One for input string and another one for a dynamic list of delimiters. How can I use sscanf to parse the input string with the defined delimiters inputted by users. For example: Myfunction(char * input_string, char * delimiter_list){ scanf("%s", input_string); scanf("%s", delimiter_list); sscanf(input_string, ???...); ................ }

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  • How to get the mic on the Creative X-Mod soundcard working correctly?

    - by Nyamiou The Galeanthrope
    Well, I have this problem for a while now. When my computer start the mic seem to work but it's like it's muted. I have to go to a terminal and type alsamixer -c 1 and then I set up PCM Capture Source on Line and set up it back to Mic to get the mic actually working. Is there is a way to do this automatically or to solve the problem. I use a special workaround on this card because of the bug #429642. My workaround is having this at the end of my /usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf : [Mapping xmod-stereo-out] device-strings = surround51:%f description = Analog Stereo Creative Xmod channel-map = front-left,front-right paths-output = analog-output analog-output-headphones analog-output-mono analog-output-lfe-on-mono paths-input = analog-input analog-input-mic analog-input-linein analog-input-aux analog-input-video analog-input-tvtuner analog-input-fm analog-input-mic-line priority = 10 Maybe the bug come from here, maybe I have to change something. Thank you for any help.

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  • extjs input text maskRe

    - by user121196
    In EXTJS, the following maskRe doesn't work in that it doesn't put the restriction of max 5 characters on the text field, why? { xtype: 'textfield', fieldLabel: '* Zip Code', allowBlank: false, maskRe: /\d{0,5}/i }

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  • Android: How can I validate EditText input?

    - by Stefan
    I need to do form validation on a series of EditTexts. I'm using OnFocusChangeListeners to trigger the validation, but this doesn't behave as desired for the final EditText. If I click on the "Done" button while typing into the final EditText then the InputMethod is disconnected, but technically focus is never lost on the EditText (and so validation never occurs). What's the best solution? Should I be monitoring when the InputMethod unbinds from each EditText rather than when focus changes? If so, how?

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  • jquery masked input with asp.net control problem

    - by Eyla
    Hi, I have problem while using jquery maskedinput with asp.net textbox. I have a check box that when I check will set a mask to the textbox and when uncheck it change the mask. the problem that when the focus is lost before the mask completed to be filled the text box will empty. how can I fix the problem??? here is my code: <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> <script src="js/jquery-1.4.1.js" type="text/javascript"></script> <script src="js/jquery.maskedinput-1.2.2.js" type="text/javascript"></script> <script type="text/javascript"> function mycheck() { if ($('#<%=chk.ClientID %>').is(':checked')) { $("#<%=txt.ClientID %>").unmask(); $("#<%=txt.ClientID %>").val(""); $("#<%=txt.ClientID %>").mask("999999999999"); } else { $("#<%=txt.ClientID %>").unmask(); $("#<%=txt.ClientID %>").val(""); $("#<%=txt.ClientID %>").mask("(999)999-9999"); } } </script> <style type="text/css"> #form1 { margin-top: 0px; } </style> </head> <body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" /> <div> <p> <asp:CheckBox ID="chk" runat="server" CssClass="kk" onclick="mycheck()" /> </p> <p> <asp:TextBox ID="txt" runat="server" CssClass="tt" ></asp:TextBox> </p> </div> </form> </body> </html>

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  • Can't focus fancybox iframe input

    - by bswinnerton
    So I'm using fancybox to load up a login iframe, and I would like it onComplete to bring focus to the username field. If someone could take a look at this code and let me know what's wrong, that'd be great. Gracias. /* Function to resize the height of the fancybox window */ (function($){ $.fn.resize = function(width, height) { if (!width || (width == "inherit")) inner_width = parent.$("#fancybox-inner").width(); if (!height || (height == "inherit")) inner_height = parent.$("#fancybox-inner").height(); inner_width = width; outer_width = (inner_width + 14); inner_height = height; outer_height = (inner_height + 14); parent.$("#fancybox-inner").css({'width':inner_width, 'height':inner_height}); parent.$("#fancybox-outer").css({'width':outer_width, 'height':outer_height}); } })(jQuery); $(document).ready(function(){ var pasturl = parent.location.href; $("a.iframe#register").fancybox({ 'transitionIn' : 'fade', 'transitionOut' : 'fade', 'speedIn' : 600, 'speedOut' : 350, 'width' : 450, 'height' : 385, 'scrolling' : 'no', 'autoScale' : false, 'autoDimensions' : false, 'overlayShow' : true, 'overlayOpacity' : 0.7, 'padding' : 7, 'hideOnContentClick': false, 'titleShow' : false, 'onStart' : function() { $.fn.resize(450,385); }, 'onComplete' : function() { $("#realname").focus(); }, 'onClosed' : function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); } }); $("a.iframe#login").fancybox({ 'transitionIn' : 'fade', 'transitionOut' : 'fade', 'speedIn' : 600, 'speedOut' : 350, 'width' : 400, 'height' : 250, 'scrolling' : 'no', 'autoScale' : false, 'overlayShow' : true, 'overlayOpacity' : 0.7, 'padding' : 7, 'hideOnContentClick': false, 'titleShow' : false, 'onStart' : function() { $.fn.resize(400,250); }, 'onComplete' : function() { $("#login_username").focus(); }, 'onClosed' : function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); } }); $("#register").click(function() { $("#login_form").hide(); $(".registertext").hide(); $.fn.resize(450,385); $("label").addClass("#register_form label"); }); $("#login").click(function() { $.fn.resize(400,250); $("label").addClass("#login_form label"); }); $("#register_form").bind("submit", function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); if ($("#realname").val().length < 1 || $("#password").val().length < 1 || $("#username").val().length < 1) { $("#no_fields").addClass("warningmsg").show().resize(inherit,405); return false; } if ($("#password").val() != $("#password2").val()) { $("#no_pass_match").addClass("errormsg").show().resize(); return false; } $.fancybox.showActivity(); $.post( "../../admin/users/create_submit.php", { realname:$('#realname').val(), email:$('#email').val(), username:$('#username').val(), password:MD5($('#password').val()), rand:Math.random() } ,function(data){ if(data == "OK"){ $(".registerbox").hide(); $.fancybox.hideActivity(); $.fn.resize(inherit,300); $("#successful_login").addClass("successfulmsg").show(); } else if(data == "user_taken"){ $.fancybox.hideActivity(); $("#user_taken").addClass("errormsg").show().resize(inherit,405); $("#username").val(""); } else { $.fancybox.hideActivity(); document.write("Well, that was weird. Give me a shout at [email protected]."); } return false; }); return false; }); $("#login_form").bind("submit", function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); if ($("#login_username").val().length < 1 || $("#login_password").val().length < 1) { $("#no_fields").addClass("warningmsg").show().resize(inherit,280); return false; } $.fancybox.showActivity(); $.post( "../../admin/users/login_submit.php", { username:$('#login_username').val(), password:MD5($('#login_password').val()), rand:Math.random() } ,function(data){ if(data == "authenticated"){ $(".loginbox").hide(); $(".registertext").hide(); $.fancybox.hideActivity(); $("#successful_login").addClass("successfulmsg").show(); parent.document.location.href=pasturl; } else if(data == "no_user"){ $.fancybox.hideActivity(); $("#no_user").addClass("errormsg").show().resize(); $("#login_username").val(""); $("#login_password").val(""); } else if(data == "wrong_password"){ $.fancybox.hideActivity(); $("#wrong_password").addClass("warningmsg").show().resize(); $("#login_password").val(""); } else { $.fancybox.hideActivity(); document.write("Well, that was weird."); } return false; }); return false; }); }); And here is the HTML: <p><a class="iframe" id="login" href="/login/">Login</a></p>

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  • VBA text box input mask

    - by Jaison
    I have two validation for date and time as below in text boxes: 00/00\ 00:00;0;0;_ It will take (dd/mm hh:mm) and works fine But sometimes i put 34/34 56:78 it will take , But it shouldn't Date sholdnot go beyond 31, month 12 time 24 and minute 59 Please help

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  • QTableWidget signal cellChanged(): distinguish between user input and change by routines

    - by crabman
    i am using PyQt but my question is a general Qt one: I have a QTableWidget that is set up by the function updateTable. It writes the data from DATASET to the table when it is called. Unfortunately this causes my QTableWidget to emit the signal cellChanged() for every cell. The signal cellChanged() is connected to a function on_tableWidget_cellChanged that reads the contents of the changed cell and writes it back to DATASET. This is necessary to allow the user to change the data manually. So everytime the table is updated, its contents are written back to DATASET. Is there a way to distinguish if the cell was changed by the user or by updateTable? i thought of disconnecting on_tableWidget_cellChanged by updateTable temporarily but that seems to be a little dirty.

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  • How to validate integer and float input in asp.net textbox

    - by Rajesh Rolen- DotNet Developer
    I am using below code to validate interger and float in asp.net but if i not enter decimal than it give me error <asp:TextBox ID="txtAjaxFloat" runat="server" /> <cc1:FilteredTextBoxExtender ID="FilteredTextBoxExtender1" TargetControlID="txtAjaxFloat" FilterType="Custom, numbers" ValidChars="." runat="server" /> i have this regex also but its giving validation error if i enters only one value after decimal.. http://stackoverflow.com/questions/617826/whats-a-c-regular-expression-thatll-validate-currency-float-or-integer

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  • DIV overlap on top of submit order INPUT button not working right in IE7

    - by Lauren
    I created a test account at www.avaline.com: username: [email protected] pass:test02 I'll keep the account around so you can see what's going on with this submit button without going through the registration process (and needing to fill in a fake address, etc). If logging in doesn't work, you can create your own test account though. Make sure at least one item is in your shopping cart, hit "proceed to checkout", and check off "PayPal" as your payment method (this way the payment won't go through for testing purposes). Once you're on the "review and submit" page, in IE7 (at least), hover over the "pay with Paypal" button, and you'll see that the cursor is a hand when you hover over the text or the button border, but it's a regular arrow when you hover over the button part. If you try clicking on the arrow-cursor area, you'll get the error that you should see...but if you click on the hand-cursor area, you get redirected to the paypal page. In FF, the #hidSubm DIV covers the "Pay with Paypal" button. Why isn't it working in IE7?

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