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  • Racket: change dotted pair to list

    - by user2963128
    I have a program that recursively calls a hashtable and prints out data from it. Unfortunately my hashtable seems to be saving data as dotted pairs so when I call the hashtable I get an error saying that there is no data for it because its tryign to search the hashtable for a dotted pair instead of a list. Is there an easy way to make the dotted pair into a regular list? IE im getting '("was" . "beginning") instead of '("was" "beginning") Is there a way to change this without re-writing how my hashtable store stuff? im using the let function to set a variable to this and then calling another function based on this variable (let ((data ( list-ref(hash-ref Ngram-table key) (random (length (hash-ref Ngram-table key)))))) is there a way to make the value stored in data just a list like this '("var1" "var2") instead of a dotted pair? edit: im getting dotted pairs because im using let to set data to the part of the hashtable's key and one of the elements in that hash.

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  • Create a polynomial object from a number using change-class

    - by charlieb
    I have written a polynomial class along the lines described in SICP 2.5.3 (except using defclass). I would like to be able to seamlessly add and multiply polynomials and regular numbers but I can't make change-class accept a number. I tried to simplify the problem by changing class from an integer to a float: (change-class 4 'float) but that gave me the error: There is no applicable method for the generic function #<STANDARD-GENERIC-FUNCTION CHANGE-CLASS (7)> when called with arguments (4 #<BUILT-IN-CLASS FLOAT>). [Condition of type SIMPLE-ERROR] I get an error of the same form from (fyi): (change-class 4 'polynomial) I'm going to go ahead and implement a manual conversion but I would prefer to use the built-in clos facilities.

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  • How to return variable datatypes from a method

    - by Praesagus
    I have a method whose callers require different datatypes. I could repeat the requisite conversions a dozen times by putting them in each of the callers, but it seems much more efficient to do it once in the called method. public String myMethod(String myArg) { return DoSomething(myArg); } public Int32 myMethod(String myArg) { return Convert.ToInt32(DoSomething(myArg)); } private String DoSomething(key) { return SomeList[key]; } If I have multiple methods that pull data from SomeList and have to utilize different data types then in each I have to do a type conversion. Examples might be session variables or query or form requests or any other number of things. In VB I could say Function myMethod(myArg as String) as Variant myMethod=DoSomething(myArg) End Function Sorry if the original post was not very clear. I hope this makes more sense. Thanks

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  • jQuery fadeOut, replaceWith, animate almost working

    - by Jesse
    I am trying to accomplish the following: 1. On click, have a div with id="fader" fadeout 2. replaceHtml of fader with new html (this new HTML will appear below the fold of the browser) 3. Animate new HTML to slide up to the specified location Step 1 and 2 are working, step 3 is not and I'm stumped as to why. Here's the javascript: $("#fader").fadeOut(1000, function() { $(this).replaceWith('<div id=\"fader\" style=\"margin-top:-500px;width:500px;height:400px;border:1px solid black;\">new div</div>', function() { $("#fader").animate({marginTop: "500px"}); }); }); Any thoughts on why the div won't animate would be greatly appreciated, thanks in advance!

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  • Zipping Rx IObservable with infinite number set

    - by Toni Kielo
    I have a IObservable [named rows in the sample below] from Reactive extensions framework and I want to add index numbers to each object it observes. I've tried to implement this using Zip function: rows.Zip(Enumerable.Range(1, int.MaxValue), (row, index) => new { Row = row, Index = index }) .Subscribe(a => ProcessRow(a.Row, a.Index), () => Completed()); .. but unfortunately this throws ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: disposables Am I understanding the Zip function wrong or is there a problem with my code? The Range part of the code doesn't seem to be the problem and the IObservable isn't yet receiving any events.

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  • Load a Settings.settings into ListView?

    - by clefranc
    Hi, I've managed to save ListView items to a System.Collections.Specialized.StringCollection property settings using this LINQ one liner: My.Settings.Property1.AddRange(ListView1.Items.Cast(Of ListViewItem)().[Select](Function(a) String.Join(Convert.ToChar(Keys.Tab), a.SubItems.Cast(Of System.Windows.Forms.ListViewItem.ListViewSubItem)().[Select](Function(s) s.Text).ToArray())).ToArray()) Now, I want to do the opposite, ie load the ListView1 from the My.Settings.Property1. It's fairly easy to do using a For Each loop, but I wonder if someone can show me a similar LINQ query. The lines in My.Settings.Property1 looks like this (Tab separated): Word1 Word2 Word3 Word4 Word5 Word6 Original code is from this answer: http://stackoverflow.com/questions/2295068/show-listview-items-in-a-combobox

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  • Make two page navigations on top ang bottom of a list

    - by sees
    I'm creating a simple PHP page that reads CSV file content and display some selected columns to users in pages Currently, I'm reading each line and display it immediately. Because of this method, I only know total of lines after finishing reading entire file( searching in file also). What I want is displaying two page navigations on the top and bottom of the list. Like this: Page 1|2|3|4 Field 1|Field 2|Field 3|Field 4|Field 5....|Field n Row1 Row2 .... Rown Page 1|2|3|4 After displaying all rows, bottom page nav, I used jquery function: insertBefore to insert another page navi to the top. Problems are: 1) Top page nav not displayed in IE8 but displayed ater pressing F5(worked in FF, Chrome). 2) Using insertBefore function, the top page nav is suddenly poppep up afer displaying the bottom one. It doesn't look naturally Any suggestion?

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  • Inline-editing: onBlur prevents onClick from being triggered (jQuery)

    - by codethief
    Hello StackOverflow community! I'm currently working on my own jQuery plugin for inline-editing as those that already exist don't fit my needs. Anyway, I'd like to give the user the following (boolean) options concerning the way editing is supposed to work: submit_button reset_on_blur Let's say the user would like to have a submit button (submit_button = true) and wants the inline input element to be removed as soon as it loses focus (reset_on_blur = true). This leads to an onClick handler being registered for the button and an onBlur handler being registered for the input element. Every time the user clicks the button, however, the onBlur handler is also triggered and results in the edit mode being left, i.e. before the onClick event occurs. This makes submitting impossible. FYI, the HTML in edit mode looks like this: <td><input type="text" class="ie-input" value="Current value" /><div class="ie-content-backup" style="display: none;">Backup Value</div><input type="submit" class="ie-button-submit" value="Save" /></td> So, is there any way I could check in the onBlur handler if the focus was lost while activating the submit button, so that edit mode isn't left before the submit button's onClick event is triggered? I've also tried to register a $('body').click() handler to simulate blur and to be able to trace back which element has been clicked, but that didn't work either and resulted in rather strange bugs: $('html').click(function(e) { // body doesn't span over full page height, use html instead // Don't reset if the submit button, the input element itself or the element to be edited inline was clicked. if(!$(e.target).hasClass('ie-button-submit') && !$(e.target).hasClass('ie-input') && $(e.target).get(0) != element.get(0)) { cancel(element); } }); jEditable uses the following piece of code. I don't like this approach, though, because of the delay. Let alone I don't even understand why this works. ;) input.blur(function(e) { /* prevent canceling if submit was clicked */ t = setTimeout(function() { reset.apply(form, [settings, self]); }, 500); }); Thanks in advance!

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  • I'm a java developer struggling with jQuery

    - by Mustafa
    Guys i am very new to jQuery.I have started using the auto complete feature.What i want is while i click on an item provided by the auto complete the page should submit to another page.I am using : $().ready(function() { $("#name").autocomplete("contacts.jsp"); $("#name").result(function(event, data, formatted) { if (data) $(this).parent().next().find("input").val(data[1]); }); $("#name").setOptions({ mustMatch : false, max: 8, onClick:selectItem, autoFill: false }); }); And this gives me good data like :Aditi XaveirAsif Garhietc for 'A'Now what i want is on clicking Aditi Xaveir, the page should submit to AditiXaveir's profile page.How do i do that?

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  • jquery ui autocomplete database

    - by user343925
    Hello, I'd like to use jQuery UI autocomplete in order to load a list from my database but I don't know wich method I should use to do so. I tried to use the "Remote datasource" method [url]http://jqueryui.com/demos/autocomplete/#remote[/url], but it obviously doesn't work. I have the following code : js: $(function() { $("#client").autocomplete({ source: "nom.php", minLength: 2, select: function(event, ui) { alert(ui); } }); }); html : <label for="client">Client</label> <input name="client" id="client" class="ui-autocomplete ui-widget-content ui-corner-all" /> php: $query = "SELECT nom from personne"; $result = mysql_query($query, $db); while($row = mysql_fetch_assoc($result)) { foreach($row as $val) $tab[] = $val; } print json_encode($tab); It does work with ["hello","test1","test2"] instead of the url but I need to load datas form database so pls tell me how I should do. thank you

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  • Rails + AMcharts (with export image php script) - PHP script converted to controller?

    - by Elliot
    Hey Guys, This one might be a little confusing. I'm using AMCharts with rails. Amcharts comes with a PHP script to export images called "export.php" I'm trying to figure out how to take the code in export.php and put it into a controller. Here is the code: <?php // amcharts.com export to image utility // set image type (gif/png/jpeg) $imgtype = 'jpeg'; // set image quality (from 0 to 100, not applicable to gif) $imgquality = 100; // get data from $_POST or $_GET ? $data = &$_POST; // get image dimensions $width = (int) $data['width']; $height = (int) $data['height']; // create image object $img = imagecreatetruecolor($width, $height); // populate image with pixels for ($y = 0; $y < $height; $y++) { // innitialize $x = 0; // get row data $row = explode(',', $data['r'.$y]); // place row pixels $cnt = sizeof($row); for ($r = 0; $r < $cnt; $r++) { // get pixel(s) data $pixel = explode(':', $row[$r]); // get color $pixel[0] = str_pad($pixel[0], 6, '0', STR_PAD_LEFT); $cr = hexdec(substr($pixel[0], 0, 2)); $cg = hexdec(substr($pixel[0], 2, 2)); $cb = hexdec(substr($pixel[0], 4, 2)); // allocate color $color = imagecolorallocate($img, $cr, $cg, $cb); // place repeating pixels $repeat = isset($pixel[1]) ? (int) $pixel[1] : 1; for ($c = 0; $c < $repeat; $c++) { // place pixel imagesetpixel($img, $x, $y, $color); // iterate column $x++; } } } // set proper content type header('Content-type: image/'.$imgtype); header('Content-Disposition: attachment; filename="chart.'.$imgtype.'"'); // stream image $function = 'image'.$imgtype; if ($imgtype == 'gif') { $function($img); } else { $function($img, null, $imgquality); } // destroy imagedestroy($img); ?>

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  • How would you organize a large complex web application (see basic example)?

    - by Anurag
    How do you usually organize complex web applications that are extremely rich on the client side. I have created a contrived example to indicate the kind of mess it's easy to get into if things are not managed well for big apps. Feel free to modify/extend this example as you wish - http://jsfiddle.net/NHyLC/1/ The example basically mirrors part of the comment posting on SO, and follows the following rules: Must have 15 characters minimum, after multiple spaces are trimmed out to one. If Add Comment is clicked, but the size is less than 15 after removing multiple spaces, then show a popup with the error. Indicate amount of characters remaining and summarize with color coding. Gray indicates a small comment, brown indicates a medium comment, orange a large comment, and red a comment overflow. One comment can only be submitted every 15 seconds. If comment is submitted too soon, show a popup with appropriate error message. A couple of issues I noticed with this example. This should ideally be a widget or some sort of packaged functionality. Things like a comment per 15 seconds, and minimum 15 character comment belong to some application wide policies rather than being embedded inside each widget. Too many hard-coded values. No code organization. Model, Views, Controllers are all bundled together. Not that MVC is the only approach for organizing rich client side web applications, but there is none in this example. How would you go about cleaning this up? Applying a little MVC/MVP along the way? Here's some of the relevant functions, but it will make more sense if you saw the entire code on jsfiddle: /** * Handle comment change. * Update character count. * Indicate progress */ function handleCommentUpdate(comment) { var status = $('.comment-status'); status.text(getStatusText(comment)); status.removeClass('mild spicy hot sizzling'); status.addClass(getStatusClass(comment)); } /** * Is the comment valid for submission */ function commentSubmittable(comment) { var notTooSoon = !isTooSoon(); var notEmpty = !isEmpty(comment); var hasEnoughCharacters = !isTooShort(comment); return notTooSoon && notEmpty && hasEnoughCharacters; } // submit comment $('.add-comment').click(function() { var comment = $('.comment-box').val(); // submit comment, fake ajax call if(commentSubmittable(comment)) { .. } // show a popup if comment is mostly spaces if(isTooShort(comment)) { if(comment.length < 15) { // blink status message } else { popup("Comment must be at least 15 characters in length."); } } // show a popup is comment submitted too soon else if(isTooSoon()) { popup("Only 1 comment allowed per 15 seconds."); } });

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  • Javascript Regex to convert dot notation to bracket notation

    - by Tauren
    Consider this javascript: var joe = { name: "Joe Smith", location: { city: "Los Angeles", state: "California" } } var string = "{name} is currently in {location.city}, {location.state}"; var out = string.replace(/{([\w\.]+)}/g, function(wholematch,firstmatch) { return typeof values[firstmatch] !== 'undefined' ? values[firstmatch] : wholematch; }); This will output the following: Joe Smith is currently in {location.city}, {location.state} But I want to output the following: Joe Smith is currently in Los Angeles, California I'm looking for a good way to convert multiple levels of dot notation found between braces in the string into multiple parameters to be used with bracket notation, like this: values[first][second][third][etc] Essentially, for this example, I'm trying to figure out what regex string and function I would need to end up with the equivalent of: out = values[name] + " is currently in " + values["location"]["city"] + values["location"]["state"];

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  • FullCalendar lazyFetching

    - by RamaKrishna
    I had enabled lazyFetching option with true/false. and click on any button of calendar then calendar sending multiple ajax calls to get data. Here is my configuration $('#calendar').fullCalendar({ header: { left: 'prev,next today', center: 'title', right: 'month,agendaWeek,agendaDay' }, editable: false, disableDragging:true, contentHeight: 500, width: 800, minTime:9, maxTime:21, lazyFetching:true, defaultView:'agendaWeek', loading: function(isLoading, view){ if(isLoading){ $('.fc-button-prev, .fc-button-next , .fc-button-month ,.fc-button-agendaWeek , .fc-button-agendaDay').hide(); $('.products').attr("disabled","disabled"); }else{ $('.fc-button-prev, .fc-button-next , .fc-button-month ,.fc-button-agendaWeek , .fc-button-agendaDay').show(); $('.products').removeAttr("disabled"); } } }); function loadCal(storeId,contactId){ $('#calendar').fullCalendar( 'removeEvents'); $('#calendar').fullCalendar( 'addEventSource','getApptsByStore.action?storeId='+storeId+'&contactId='+contactId); }

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  • What should I use for the filepath if I'm developing from my desktop?

    - by codeninja
    I'm having an extremely difficulty time getting the flowplayer to show up and the worst part is I have no idea what is wrong because I'm not getting any error messages! I have an external javascript file: C:/desktop/mysite/js/jq/plugins.js calling $f() from: C:/desktop/mysite/thirdparty/flowplayer/flowplayer.js the swf files also live there... I'm working on file/desktop (no localhost or webserver) $(video.id).flowplayer("thirdparty/flowplayer/flowplayer-3.1.15.swf", { clip:{ .... }, // min Flash version version:[9,115], // older versions will see a custom message onFail:function(){ alert("Failed!"); }, onError:function(errCode,errMsg){ alert(errCode+errMsg); } }); I don't know what path to use for the SWFs to get them to load, is the path relative to the javascript (plugins.js) that calls $f() or is it relative to the path of the flowplayer.js ?? bangs head on wall

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  • jQuery AJAX call undefined error with special characters

    - by David
    Hi, I tried to make an AJAX call using jQuery, the data has special characters, e.g {'data':'<p>test</p>'}. It seems failed to pass this data in the first place. It will work if i just pass {'data':'test'}. encodeURIComponent and JSON.stringify failed here due to the special character < > /. Could anyone please help with it? Thanks. $.ajax({ type: "POST", url: "services.aspx", data: "data=" + encodeURIComponent(JSON.stringify(obj)), dataType: "text", error: function(xhr, textStatus, errorThrown) { alert("ERROR"); }, success: function(data) { } }); Regards, David

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  • jquery select iframe children

    - by Val
    I am using the editArea library and jquery to do what i need... http://www.cdolivet.com/index.php?page=editArea&sess=2b8243f679e0d472397bfa959e1d3841 so in my html there is an iframe tag that editArea uses what i need is to access something like so with jquery $('iframe textarea').keydown(function (e){ number = 17; //any number really :) if(e.which == number){ //do something... alert('Done...'); } }); I tried the above but it looks like it is not detecting that key. but it works if selector was $(document) therefore the rest of the function works it's just it's not picking up the iframes textarea keydown any ideas? Thanks

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  • Insert element into a tree from a list in Standard ML

    - by vichet
    I have just started to learn SML on my own and get stuck with a question from the tutorial. Let say I have: tree data type datatype node of (tree*int*tree) | null insert function fun insert (newItem, null) = node (null, newItem, null) | insert (newItem, node (left, oldItem, right)) = if (newItem <= oldItem) then node (insert(newItem,left),oldItem, right) else node (left, oldItem, insert(newItem, right) an integer list val intList = [19,23,21,100,2]; my question is how can I add write a function to loop through each element in the list and add to a tree? Your answer is really appreciated.

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  • Java Timers - Functions called not completing!

    - by Matt Swanson
    So I have a TimerTask task calling a function onTimerComplete() in its run() onTimerComplete() looks something like this: private void onTimerComplete(){ myFunc1(); myFunc2(); } I make a Timer t and I schedule the TimerTask with t.schedule(task, 2000); The problem is, when the timer is up and the task runs my onTimerComplete() but that function does not finish. It runs myFunc1() but never finishes it nor does it ever call myFunc2() However, if I call onTimerComplete() directly, everything works. What's the deal here?

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  • Linq query - multiple where, with extension method

    - by Cj Anderson
    My code works for ORs as I've listed it below but I want to use AND instead of OR and it fails. I'm not quite sure what I'm doing wrong. Basically I have a Linq query that searches on multiple fields in an XML file. The search fields might not all have information. Each element runs the extension method, and tests the equality. Any advice would be appreciated. refinedresult = From x In theresult _ Where x.<thelastname>.Value.TestPhoneElement(LastName) Or _ x.<thefirstname>.Value.TestPhoneElement(FirstName) Or _ x.<id>.Value.TestPhoneElement(Id) Or _ x.<number>.Value.TestPhoneElement(Telephone) Or _ x.<location>.Value.TestPhoneElement(Location) Or _ x.<building>.Value.TestPhoneElement(building) Or _ x.<department>.Value.TestPhoneElement(Department) _ Select x Public Function TestPhoneElement(ByVal parent As String, ByVal value2compare As String) As Boolean 'find out if a value is null, if not then compare the passed value to see if it starts with Dim ret As Boolean = False If String.IsNullOrEmpty(parent) Then Return False End If If String.IsNullOrEmpty(value2compare) Then Return ret Else ret = parent.ToLower.StartsWith(value2compare.ToLower.Trim) End If Return ret End Function

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  • How best to convert CakePHP date picker form data to a PHP DateTime object?

    - by Daren Thomas
    I'm doing this in app/views/mymodel/add.ctp: <?php echo $form->input('Mymodel.mydatefield'); ?> And then, in app/controllers/mymodel_controller.php: function add() { # ... (if we have some submitted data) $datestring = $this->data['Mymodel']['mydatefield']['year'] . '-' . $this->data['Mymodel']['mydatefield']['month'] . '-' . $this->data['Mymodel']['mydatefield']['day']; $mydatefield = DateTime::createFromFormat('Y-m-d', $datestring); } There absolutly has to be a better way to do this - I just haven't found the CakePHP way yet... What I would like to do is: function add() { # ... (if we have some submitted data) $mydatefield = $this->data['Mymodel']['mydatefiled']; # obviously doesn't work }

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  • How to get rid of the following multiple alternatives warnings in my ANTLR3 grammar?

    - by Jarrod Roberson
    [11:45:19] warning(200): mygrammar.g:14:57: Decision can match input such as "','" using multiple alternatives: 1, 2 As a result, alternative(s) 2 were disabled for that input [11:45:19] warning(200): C:\Users\Jarrod Roberson\mygrammar.g:14:57: Decision can match input such as "','" using multiple alternatives: 1, 2 As a result, alternative(s) 2 were disabled for that input I want to be able to nest functions inside other functions. myfunction(x) -> sqr(a) -> a * a, y = sqr(x). here is the line it is complaining about function : ID '(' args ')' '->' statement (',' statement)* ; and here is what it is considering the alternative statement : ATOM | expression | assignment | function ; Here is what the synatx diagram looks like in ANTLRWorks I really like things to compile/work without any warnings. How do I resolve this warning condition?

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  • Why would someone use ob_start in this manner and what is the point?

    - by meder
    Something is failing in the class I copied over. It's not my class, but the relevant bit that fails is: class foo { function process() { ob_start( array( &$this, 'parseTemplate' ) ); } function parseTemplate(){} } Does anyone know what the ob_start expression is supposed to do? Call the parse_template method in the context of a copy of &$this? PHP Version is 5.3.2-1. I suspect that the class was coded for 5.0-5.2 and it breaks in 5.3? or could it be something else?

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  • SWIG generated code fails to run on PHP 5.3.2 undefined symbol: zend_error_noreturn

    - by wookiebreath
    I have a library that I have been using successfully with PHP 5.1.6 with the help of some wrapper code generated by SWIG (v1.3.40). I have just upgraded to PHP 5.3.2 and I am seeing the following error: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/myLib_php.so' - /usr/lib/php/modules/myLib_php.so: undefined symbol: zend_error_noreturn in Unknown on line 0 On investigation it appears that the wrapper code produced by SWIG (myLib_wrap.c) includes calls to the PHP function: zend_error_noreturn and that this function isn't available in PHP 5.3.2? Has anyone seen this issue before? Things seem to work if I manually update the generated code so that instead of calling zend_error_noreturn it just calls zend_error. Is this approach safe?

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  • Invalid Argument IE 8 jQuery

    - by Deshiknaves
    Hi, I have this particular script that runs so that the flash elements don't show up on top of my slide out navigation. This redraws that flash element with wmode as opaque and so it shows up under the navigation. Works perfectly with Chrome and FireFox but not with IE. In IE I get an Invalid Argument in jquery.min.js code 0 Line 103 char 460. Can anyone help me as to why? If I comment out the second line of code inside the function then there is no error, but then doesn't work in FireFox. Any help is appriciated. $(window).load(function(){ $('embed').attr('wmode','opaque'); $('object').append('<param name="wmode" value="opaque">'); $('object').wrap('<div>'); });

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