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• Large Y-axis tickInterval in high charts does not work

  - by ckovacs

  I have a chart at this JSFiddle to demonstrate a problem where our charts are not respecting the y-axis tick interval for large values: http://jsfiddle.net/z2cDu/1/ var plots = {"usBytePlots":[[1362009600000,143663192997],[1362096000000,110184848742],[1362182400000,97694974247],[1362268800000,90764690805],[1362355200000,112436517747],[1362441600000,113563368701],[1362528000000,139579327454],[1362614400000,118406594506],[1362700800000,125366899935],[1362787200000,134189435596],[1362873600000,132873135854],[1362960000000,121002328604],[1363046400000,123138222001],[1363132800000,115667785553],[1363219200000,103746172138],[1363305600000,108602633473],[1363392000000,89133998142],[1363478400000,92170701458],[1363564800000,86696922873],[1363651200000,80980159054],[1363737600000,97604615694],[1363824000000,108011666339],[1363910400000,124419138381],[1363996800000,121704988344],[1364083200000,124337959109],[1364169600000,137495512348],[1364256000000,136017103319],[1364342400000,60867510427]],"dsBytePlots":[[1362009600000,1734982247336],[1362096000000,1471928923201],[1362182400000,1453869593201],[1362268800000,1411787942581],[1362355200000,1460252447519],[1362441600000,1595590020177],[1362528000000,1658007074783],[1362614400000,1411941908699],[1362700800000,1447659369450],[1362787200000,1643008799861],[1362873600000,1792357973023],[1362960000000,1575173242169],[1363046400000,1565139003978],[1363132800000,1549211975554],[1363219200000,1438411448469],[1363305600000,1380445413578],[1363392000000,1298319283929],[1363478400000,1194578344720],[1363564800000,1211409679299],[1363651200000,1142416351471],[1363737600000,1223822672626],[1363824000000,1267692136487],[1363910400000,1384335759541],[1363996800000,1577205919828],[1364083200000,1675715948928],[1364169600000,1517593781592],[1364256000000,1562183018457],[1364342400000,681007264598]],"aggregatedTotalBytes":43476367948896,"aggregatedUsBytes":3150320403841,"aggregatedDsBytes":40326047545055,"maxTotalBytes":328186292129,"maxTotalBitsPerSecond":30387619.641574074} ; $('#container').highcharts({ yAxis: { tickInterval: 53687091200 // 500 gigabytes. Maximum y-axis value is approx 1.8TB }, series : [ { color: 'rgba(80, 180, 77, 0.7)', type: 'areaspline', name : 'Downstream', data : plots.dsBytePlots, total: plots.aggregatedDsBytes }, { color: 'rgba(33, 143, 197, 0.7)', type: 'areaspline', name : 'Upstream', data : plots.usBytePlots, total: plots.aggregatedUsBytes }] }); In this example we are charting bandwidth utilization in bytes. The chart has a maximum value of about 1.8TB. We set the y-axis tick interval to exactly 500GB but the rendered y-axis ticks don't make any sense for the given interval.

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• Which CSS editor can give formatting like this in one shot automatically?

  - by jitendra

  Which free (offline) CSS tool can give formatting like this in one shot automatically? using any keyboard shortcut of from any command of IDE example This (it can be any type of formatting) #proceed_form ol, #demo_form ol { list-style:none; margin:0; padding:0} #proceed_form ol li, #demo_form ol li { padding:2px 0; margin:0; line-height:normal; height:18px} #proceed_form ol li label, #demo_form ol li label { display:inline-block; width:195px;} into like this #proceed_form ol, #demo_form ol { list-style: none; margin: 0; padding: 0 } #proceed_form ol li, #demo_form ol li { padding: 2px 0; margin: 0; line-height: normal; height: 18px } #proceed_form ol li label, #demo_form ol li label { display: inline-block; width: 195px; } Can we achieve this type of formatting in Dreamweaver? or it not possible in dreamweaver then in any other tool?

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• DB2 Child Table Not Working - Create Table

  - by gamerzfuse

  I have a bit of a task before me. (DB2 Database) I need to create a table that will be a child table (is that what it is called in SQL?) I need it so that it has a foreign key constraint with my other table, so when the parent table is modified (record deleted) the child table also loses that record. Once I have the table, I also need to populate it with the data from the other table (if there is an easy way to UPDATE this). If you could point me in the right direction, this would help alot, as I do not even know what syntax to look for. Thanks in advance The table I have in place: create table titleauthors ( au_id char(11), title_id char(6), au_ord integer, royaltyshare decimal(5,2)); The table I am creating: create table titles ( title_id char(6), title varchar(80), type varchar(12), pub_id char(4), price decimal(9,2), advance decimal(9,2), ytd_sales integer, contract integer, notes varchar(200), pubdate date); I need the title_id to be matched with the title_id from the parent table AND use the ON DELETE CASCADE syntax to delete when that table is deleted from. My Attempt: CREATE TABLE BookTitles ( title_id char(6) NOT NULL CONSTRAINT BookTitles_title_id_pk REFERENCES titleauthors(title_id) ON DELETE CASCADE, title varchar(80) NOT NULL, type varchar(12), pub_id char(4), price decimal(9,2), advance decimal(9,2), ytd_sales integer, contract integer, notes varchar(200), pubdate date) ; Thanks in advance!

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• Python Post Upload JPEG to Server?

  - by iJames

  It seems like this answer has been provided a bunch of times but in all of it, I'm still getting errors from the server and I'm sure it has to do with my code. I've tried HTTP, and HTTPConnection from httplib and both create quite different terminal outputs in terms of formatting/encoding so I'm not sure where the problem lies. Does anything stand out here? Or is there just a better way? Pieced together from an ancient article because I really needed to understand the basis of creating the post: http://code.activestate.com/recipes/146306-http-client-to-post-using-multipartform-data/ Note, the jpeg is supposed to be "unformatted". The pseudocode: boundary = "somerandomsetofchars" BOUNDARY = '--' + boundary CRLF = '\r\n' fields = [('aspecialkey','thevalueofthekey')] files = [('Image.Data','mypicture.jpg','/users/home/me/mypicture.jpg')] bodylines = [] for (key, value) in fields: bodylines.append(BOUNDARY) bodylines.append('Content-Disposition: form-data; name="%s"' % key) bodylines.append('') bodylines.append(value) for (key, filename, fileloc) in files: bodylines.append(BOUNDARY) bodylines.append('Content-Disposition: form-data; name="%s"; filename="%s"' % (key, filename)) bodylines.append('Content-Type: %s' % self.get_content_type(fileloc)) bodylines.append('') bodylines.append(open(fileloc,'r').read()) bodylines.append(BOUNDARY + '--') bodylines.append('') #print bodylines content_type = 'multipart/form-data; boundary=%s' % BOUNDARY body = CRLF.join(bodylines) #conn = httplib.HTTP("www.ahost.com") # In both this and below, the file part was garbling the rest of the body?!? conn = httplib.HTTPConnection("www.ahost.com") conn.putrequest('POST', "/myuploadlocation/uploadimage") headers = { 'content-length': str(len(body)), 'Content-Type' : content_type, 'User-Agent' : 'myagent' } for headerkey in headers: conn.putheader(headerkey, headers[headerkey]) conn.endheaders() conn.send(body) response = conn.getresponse() result = response.read() responseheaders = response.getheaders() It's interesting in that the real code I've implemented seems to work and is getting back valid responses, but the problem it it's telling me that it can't find the image data. Maybe this is particular to the server, but I'm just trying to rule out that I'm not doing some thing exceptionally stupid here. Or perhaps there's other methodologies for doing this more efficiently. I've not tried poster yet because I want to make sure I'm formatting the POST correctly first. I figure I can upgrade to poster after it's working yes?

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• Combining properties made available via webservices profile service aspnet

  - by Adam

  I really wasn't sure what the title for my question could be, so sorry if it's a bit vague. I'm working on an application that uses client application services for authentication/profile management etc. In web.config for my website, I have the following profile properties like this: <properties> <add name="FirstName" type="string" defaultValue="" customProviderData="FirstName;nvarchar"/> ... Basic things like first name, last name etc. I'm exposing properties for my client app like this: <system.web.extensions> <scripting> <webServices> <authenticationService enabled="true" requireSSL="false"/> <profileService enabled="true" readAccessProperties="UserProfile" writeAccessProperties="UserProfile"/> <roleService enabled="true"/> </webServices> </scripting> </system.web.extensions> What I'm wondering is whether it's possible to bundle all the individual profile properties into a single object for client apps to utilize? I originally had all my profile data stored as members of a single class (UserProfile) but I broke it all out so that I could use the SqlTableProfileProvider to store each field as individual columns in relevant tables. I know I can create an class with members for each type, I'm just not sure if there's an easy way to create an object with all my property values (other than assigning values to this object whenever I assign to the the standalone properties). I don't think I'm explaining this very well, so I'll try an example. Say in my website profile I have FirstName and LastName as properties. For my client application profileService I want to have one ReadAccessProperty FullName. Is there some way to automatically create FullName from the existing FirstName and LastName properties without having to also have a seperate FullName property (and manually assign data to it whenever I assign data to FirstName and LastName)?

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• How to MakeTable ReadOnly including contents like images

  - by GustlyWind

  I have a table which has two text boxes and a image beside it to click and open a popup. In read-only mode based on condition I am able to make text boxes read-only but images are not becoming read-only.One solution I had is the anchor tag associated with image calls for JavaScript where I can check for a dummy click when it is in read-only mode. The problem here is the function is common and effects everywhere. So is there a way to make the entire table read-only so that no extra workaround needs to done. Edited for code <table> <tr> <td class="lightbg" colspan='4'>&nbsp; Expires:<input type="TEXT" value="" id="element1" name="expireDate" size="10" maxlength="20" class="" onChange="javascript:validateDateEntry('element1',true);;"> Period:<input type="TEXT" value="" id="element2" name="refershDate" size="10" maxlength="20" class="" onChange="javascript:validateDateEntry('element2',true);;"> &nbsp; <a href="javascript:doCalendar('element1');"> <img src="/PWM/images/images_2006/calendarbtn.gif" border="0" alt="Click to select date from calendar" align="absmiddle"> </a> </td> </tr> <tr> <td colspan='4'><b>*</b>Times are in the WFM Server's Time Zone.</td></tr> </table> Thanks

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• How do I properly implement a property in F#?

  - by Greg D

  Consider my first attempt, a simple type in F# like the following: type Test() = inherit BaseImplementingNotifyPropertyChangedViaOnPropertyChanged() let mutable prop: string = null member this.Prop with public get() = prop and public set value = match value with | _ when value = prop -> () | _ -> let prop = value this.OnPropertyChanged("Prop") Now I test this via C# (this object is being exposed to a C# project, so apparent C# semantics are desirable): [TestMethod] public void TaskMaster_Test() { var target = new FTest(); string propName = null; target.PropertyChanged += (s, a) => propName = a.PropertyName; target.Prop = "newString"; Assert.AreEqual("Prop", propName); Assert.AreEqual("newString", target.Prop); return; } propName is properly assigned, my F# Setter is running, but the second assert is failing because the underlying value of prop isn't changed. This sort of makes sense to me, because if I remove mutable from the prop field, no error is generated (and one should be because I'm trying to mutate the value). I think I must be missing a fundamental concept. What's the correct way to rebind/mutate prop in the Test class so that I can pass my unit test?

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• Java method keyword "final" and its use

  - by Lukas Eder

  When I create complex type hierarchies (several levels, several types per level), I like to use the final keyword on methods implementing some interface declaration. An example: interface Garble { int zork(); } interface Gnarf extends Garble { /** * This is the same as calling {@link #zblah(0)} */ int zblah(); int zblah(int defaultZblah); } And then abstract class AbstractGarble implements Garble { @Override public final int zork() { ... } } abstract class AbstractGnarf extends AbstractGarble implements Gnarf { // Here I absolutely want to fix the default behaviour of zblah // No Gnarf shouldn't be allowed to set 1 as the default, for instance @Override public final int zblah() { return zblah(0); } // This method is not implemented here, but in a subclass @Override public abstract int zblah(int defaultZblah); } I do this for several reasons: It helps me develop the type hierarchy. When I add a class to the hierarchy, it is very clear, what methods I have to implement, and what methods I may not override (in case I forgot the details about the hierarchy) I think overriding concrete stuff is bad according to design principles and patterns, such as the template method pattern. I don't want other developers or my users do it. So the final keyword works perfectly for me. My question is: Why is it used so rarely in the wild? Can you show me some examples / reasons where final (in a similar case to mine) would be very bad?

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• Javascript callback not firing when AJAX operation complete

  - by MisterJames

  Given the following code on an ASP.NET MVC View: <% using (Ajax.BeginForm("AddCommunity", new AjaxOptions { UpdateTargetId = "community-list", OnSuccess = "BindCommunityHover" })) { %> Add Community: <input type="text" id="communityName" name="communityName" /> <input type="submit" value="Add" /> <% } %> And the following JavaScript method in the file: function BindCommunityHover() { $(".community-item-li").hover( function () { $(this).addClass("communityHover"); }, function () { $(this).removeClass("communityHover"); } ); }; Is there any reason why BindCommunityHover is not being called when the AJAX result comes back? The community-list div is properly updated (the action returns a partial view). I have also tried setting OnComplete (instead of OnSuccess) to no avail. The BindCommunityHover method is called in a $(function(){...}); block when the page first loads, and for all existing .community-item-li elements, it works. The partial result from my controller replaces all items in that div with more of the same class. The OnSuccess method is supposed to fire after the document is updated. Update: k...this gets weird. I added the following to the BindCommunityHover method: alert($(".community-item-li").size()); I'm getting 240 in the alert when the page loads and when the callback fires. So, the callback IS firing, jQuery is matching the elements but not applying the styles...

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• Python OOP and lists

  - by Mikk

  Hi, I'm new to Python and it's OOP stuff and can't get it to work. Here's my code: class Tree: root = None; data = []; def __init__(self, equation): self.root = equation; def appendLeft(self, data): self.data.insert(0, data); def appendRight(self, data): self.data.append(data); def calculateLeft(self): result = []; for item in (self.getLeft()): if (type(item) == type(self)): data = item.calculateLeft(); else: data = item; result.append(item); return result; def getLeft(self): return self.data; def getRight(self): data = self.data; data.reverse(); return data; tree2 = Tree("*"); tree2.appendRight(44); tree2.appendLeft(20); tree = Tree("+"); tree.appendRight(4); tree.appendLeft(10); tree.appendLeft(tree2); print(tree.calculateLeft()); It looks like tree2 and tree are sharing list "data"? At the moment I'd like it to output something like [[20,44], 10, 4], but when I tree.appendLeft(tree2) I get RuntimeError: maximum recursion depth exceeded, and when i even won't appendLeft(tree2) it outputs [10, 20, 44, 4] (!!!). What am I missing here? I'm using Portable Python 3.0.1. Thank you

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• Dynamically created iframe not working on Safari

  - by mhammout

  I have a weird problem and I find no answer on google... I dynamically create and fullfil an iframe with jquery on a page. It works fine withFF and IE, but not with Safari. The iframe is created but empty (the message "greetings from the iframe !" is missing). Here is a piece of code to illustrate it : <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr-fr" lang="fr-fr" > <head> <title>iframe</title> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function() { var jFrame = $('<iframe id="myiframe" name="myiframe">'); jFrame.css({'height':'40px','width':'200px'}).appendTo($('#container')); $('#myiframe').load(function() { jFrame.contents().find("body").html('greetings from the iframe !'); }); }); </script> </head> <body> <div id="container"></div> </body> </html> I really wonder why the iframe stays empty with Safari. It seems like if "contents()" was not well interpreted... Any idea ?

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• How can I enable child inputs text selection in Mozilla Firefox using CSS?

  - by L. Shaydariv

  Hi. Let consider the following scenario. I have the following page where all rendered elements must be non-selectable. <html> <head> <style type="text/css"> body { -webkit-user-select: none; -moz-user-select: none; } div { border: solid 1px green; padding: 5px; } </style> </head> <body> <div> Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat </div> <div> <input type="text" value="You can select the text from me" /> <textarea> And me too. </textarea> </div> </body> </html> The input and textarea text is still selectable in Google Chrome, but the text is not selectable in Firefox. I've already tried the following: input, textarea { -moz-user-select: text !important; } And... It simply doesn't work because (as far as I can see) input and textarea are nested in the document body element that's already is not selectable. So, is it possible to enable text selection of the nested user input elements in Firefox using CSS? Thank you for suggestions.

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• Modify loggingConfiguration Programmatic (enterprise library)

  - by alhambraeidos

  Hi all, I have app.config in m win application, and loggingConfiguration section (enterprise library 4.1). I need do this programatically, Get a list of all listener in loggingConfiguration Modify property fileName=".\Trazas\Excepciones.log" of several RollingFlatFileTraceListener's Modify several properties of AuthenticatingEmailTraceListener listener, Any help, please, I havent found any reference or samples Thanks in advanced. Greetings <listeners> <add name="Excepciones RollingFile Listener" fileName=".\Trazas\Excepciones.log" formatter="Text Single Formatter" footer="&lt;/Excepcion&gt;" header="&lt;Excepcion&gt;" rollFileExistsBehavior="Overwrite" rollInterval="None" rollSizeKB="1500" timeStampPattern="yyyy-MM-dd" listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" traceOutputOptions="None" filter="All" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> <add name="AuthEmailTraceListener" type="zzzz.Frk.Logging.AuthEmailTraceListener.AuthenticatingEmailTraceListener, zzzz.Frk.Logging.AuthEmailTraceListener" listenerDataType="zzzz.Frk.Logging.AuthEmailTraceListener.AuthenticatingEmailTraceListenerData, zzzz.Frk.Logging.AuthEmailTraceListener" formatter="Exception Formatter" traceOutputOptions="None" toAddress="[email protected]" fromAddress="[email protected]" subjectLineStarter=" Excepción detectada - " subjectLineEnder="incidencias" smtpServer="smtp.gmail.com" smtpPort="587" authenticate="true" username="[email protected]" password="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" enableSsl="true" />

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• CSS: Is it possible to get a div that is 100% height, less a top and bottom margin?

  - by Cheeso

  I can get a 100% height div, like this: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html lang="en"> <head> <title>T5</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <style type="text/css"> * { padding: 0; margin: 0; } html, body { height: 100%; } body { font-family: "lucida sans", verdana, arial, helvetica, sans-serif; font-size: 75%; } h1 { font-size: 1.4em; padding: 10px 10px 0; } p { padding: 0 10px 1em; } #container { min-height: 100%; background-color: #DDD; border-left: 2px solid #666; border-right: 2px solid #666; width: 280px; margin: 0 auto; } * html #container { height: 100%; }</style> </head> <body> <div id="container"> <h1>100% Height Div</h1> <p>Lorem...</p> <p>Ut ...</p> </div> </body> </html> But is it possible to get a div with a height of "almost 100%" height? If I want margins at the top and bottom, can I do that? Margins as indicated here:

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• jQuery UI Dialog and Textarea Focus Issue

  - by Gimli

  I'm working on a modal comment system using jQuery and jQuery UI, but I'm having some issues with focus. I have a series of divs inside the modal to switch between Login and Add comment, as below: <div id="modal" title="Loading"> <div id="modalContent"></div> <div id="modalLogin"> <div class="loginBox"></div> <div class="addCommentBox"></div> <div class="commentReview"></div> </div> </div> Inside of the addCommentBox div, I've got the comment code: <form action="/comments/add" class="addCommentForm" name="addCommentForm" method="post"> <textarea name="content" class="addCommentContent"></textarea> <button value="Add Comment" type="submit" class="commentPost"/> <button value="Clear Comment" type="submit" id="clearComment"/> </form> The issue is that about half the time after opening the dialog the textarea inside the addCommentBox div doesn't react to keyboard inputs when selected. The mouse works correctly and will allow text to be selected, but keyboard control does nothing. I have no event listeners on the textarea. I've got some on the buttons, but they are targeting only the buttons. The only thing that happens in the HTML seems to be the fact that every time I click on the modal, the z-index increases for the overall modal div. I have set the addCommentBox div to have a z-index of 9999, greater than the z-index of the modal. Any suggestions or directions to research would be greatly appreciated. Thanks!

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• jqueryvalidation no space customization

  - by Ken

  i have a form where the user can update his name and last name. i use jquery validation to validate the form. how can i validate if the user put spaces? here's what i have: <script> $(document).ready(function(){ $('#submit').click(function() { var valid = $("#myform").valid(); if(!valid) { return false; } $.ajax({ type: "POST", url: 'save', data: $('#myform').serialize(), dataType: 'json', cache: false, success: function(result) { // redirect to another page } }); }); }); </script> </head> <body> <form id="myform" method="post" action=""> <fieldset> <legend>update name</legend> <p> <label for="fname">Name</label> <em>*</em><input id="fname" name="fname" size="25" class="required" minlength="2" /> </p> <p> <label for="lname">Last Name</label> <em>*</em><input id="lname" name="lname" size="25" class="required" minlength="2" /> </p> <p> <input id="submit" type="submit" value="Submit"/> </p> </fieldset> </form> thanks

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• Ruby and duck typing: design by contract impossible?

  - by davetron5000

  Method signature in Java: public List<String> getFilesIn(List<File> directories) similar one in ruby def get_files_in(directories) In the case of Java, the type system gives me information about what the method expects and delivers. In Ruby's case, I have no clue what I'm supposed to pass in, or what I'll expect to receive. In Java, the object must formally implement the interface. In Ruby, the object being passed in must respond to whatever methods are called in the method defined here. This seems highly problematic: Even with 100% accurate, up-to-date documentation, the Ruby code has to essentially expose its implementation, breaking encapsulation. "OO purity" aside, this would seem to be a maintenance nightmare. The Ruby code gives me no clue what's being returned; I would have to essentially experiment, or read the code to find out what methods the returned object would respond to. Not looking to debate static typing vs duck typing, but looking to understand how you maintain a production system where you have almost no ability to design by contract. Update No one has really addressed the exposure of a method's internal implementation via documentation that this approach requires. Since there are no interfaces, if I'm not expecting a particular type, don't I have to itemize every method I might call so that the caller knows what can be passed in? Or is this just an edge case that doesn't really come up?

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• Enumerating a string

  - by JamesB

  I have a status which is stored as a string of a set length, either in a file or a database. I'm looking to enumerate the possible status' I have the following type to define the possible status' Type TStatus = (fsNormal = Ord('N'),fsEditedOnScreen = Ord('O'), fsMissing = Ord('M'),fsEstimated = Ord('E'),fsSuspect = Ord('s'), fsSuspectFromOnScreen = Ord('o'),fsSuspectMissing = Ord('m'), fsSuspectEstimated = Ord('e')); Firstly is this really a good idea? or should I have a seperate const array storing the char conversions? That would mean more than one place to update. Now convert a string to a status array I have the following, but how can I check if a char is valid without looping through the enumeration? Function StrToStatus(Value : String):TStatusArray; var i: Integer; begin if Trim(Value) = '' then begin SetLength(Result,0); Exit; end; SetLength(Result,Length(Value)); for i := 1 to Length(Value) do begin Result[i] := TStatus(Value[i]); // I don't think this line is safe. end; end; AFAIK this should be fine for converting back again. Function StatusToStr(Value : TStatusArray):String; var i: Integer; begin for i := 0 to Length(Value) - 1 do Result := Result + Chr(Ord(Value[i])) end; I'm using Delphi 2007

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• Button Visibility Converter

  - by developer

  Hi All, I have a requirement wherein I need to display on a User form, a Create Button if that user has doesnt have a profile and a Edit Button if he does have a profile. I am using a converter to change the visibility of the button. Below is my code, <StackPanel Orientation="Horizontal"> <Button Content="Create Profile" Visibility="{Binding Profile,Converter={StaticResource ButtonVisibilityConverter}, ConverterParameter='Create'}" Command="local:LaunchEditor" CommandParameter="{Binding}"/> <Button Content="Edit Profile" Visibility="{Binding Profile,Converter={StaticResource ButtonVisibilityConverter}, ConverterParameter='Edit'}" Command="local:LaunchEditor" CommandParameter="{Binding}"/> </StackPanel> Below is my converter code public class ButtonVisibilityConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { string btName = null; btName = (string)parameter; if ((value==null)&&(btName=="Create")) { return Visibility.Visible; } else if ((value != null) && (btName=="Edit")) { return Visibility.Visible; } else { return Visibility.Collapsed; } } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } Everything works fine initially, but the moment I click on the Create Profile window, and it is the constructor that loads the profile window, after that even if I close that window without doing anything, the Create button turns to edit. My guess is that, it is because the constructor would have create the profile object and so even though the object is empty it shows me edit button instead of create. Is there any other way I could display button visibility??

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• jQuery server ping slowly but surely filling memory?

  - by danspants

  I use the following piece of code to test if our server is running whilst the user is in a page. I've also started adding other functions that grab small amounts of data that are constantly changing and are to be relayed to the user (Files waiting for download, messages, reports etc). I've noticed recently that if I leave any page open (all pages contain the same function), the browser takes up more and more system memory which I can only attribute to this regular task (overnight it reached 1.6 gb). Is there some way of clearing out the data that is being accumulated? Is this normal behaviour? As far as i can tell, every time I call the function it should overwrite the previously retrieved data? function testServer(){ jQuery.ajax({ type:"HEAD", url:"/media/d_arrow_blue.png", error: function(msg) { jQuery.jGrowl("Server Disconnected"); } }); //retrieves count of files awaiting download - move to seperate function jQuery.get("/get_files/",{"type":"count"},function(data) { jQuery("#downloadList").children("div").text(data); }); }; jQuery().doTimeout(6000,function() { testServer(); return true; });

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• Creating a property setter delegate

  - by Jim C

  I have created methods for converting a property lambda to a delegate: public static Delegate MakeGetter<T>(Expression<Func<T>> propertyLambda) { var result = Expression.Lambda(propertyLambda.Body).Compile(); return result; } public static Delegate MakeSetter<T>(Expression<Action<T>> propertyLambda) { var result = Expression.Lambda(propertyLambda.Body).Compile(); return result; } These work: Delegate getter = MakeGetter(() => SomeClass.SomeProperty); object o = getter.DynamicInvoke(); Delegate getter = MakeGetter(() => someObject.SomeProperty); object o = getter.DynamicInvoke(); but these won't compile: Delegate setter = MakeSetter(() => SomeClass.SomeProperty); setter.DynamicInvoke(new object[]{propValue}); Delegate setter = MakeSetter(() => someObject.SomeProperty); setter.DynamicInvoke(new object[]{propValue}); The MakeSetter lines fail with "The type arguments cannot be inferred from the usage. Try specifying the type arguments explicitly." Is what I'm trying to do possible? Thanks in advance.

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• Final classes in Python 3.x- something Guido isn't telling me?

  - by GlenCrawford

  This question is built on top of many assumptions. If one assumption is wrong, then the whole thing falls over. I'm still relatively new to Python and have just entered the curious/exploratory phase. It is my understanding that Python does not support the creating of classes that cannot be subclassed (final classes). However, it seems to me that the bool class in Python cannot be subclassed. This makes sense when the intent of the bool class is considered (because bool is only supposed to have two values: true and false), and I'm happy with that. What I want to know is how this class was marked as final. So my question is: how exactly did Guido manage to prevent subclassing of bool? >>> class TestClass(bool): pass Traceback (most recent call last): File "<pyshell#2>", line 1, in <module> class TestClass(bool): TypeError: type 'bool' is not an acceptable base type Related question: http://stackoverflow.com/questions/2172189/why-i-cant-extend-bool-in-python

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• Hybrid EAV/CR model via WCF (and statically-typed language)?

  - by Pat

  Background I'm working on the architecture for a cloud-based LOB application, using Silverlight for the client, WCF, ASP.NET/C# for server and SQL Server for storage. The data model requires some flexibility per user (ability to add custom properties and define validation rules for them, for example), and a hybrid EAV/CR persistence model on the server side will suit nicely. Problem I need an efficient and maintainable technology and approach to handle the transformation from the persisted EAV model to/from WCF (and similarly allow the client to bind to the resulting data - DataGrid is a key UI element)? Admission: I don't yet know enough about WCF to understand if it supports ExpandoObject directly, but I suspect it will. Options I started off looking at WCF RIA services, but quickly discovered they're heavily dependent upon both static type data and compile-time code generation. Neither of these appeal. The options I'm considering include: Using WCF RIA services and pass the data over the network directly in EAV form (i.e. Dictionary), and handle the binding issue purely on the client side (like this) Using a dynamic language (probably IronPython) to handle both ends of the communication, with plumbing to generate the necessary CLR type data on the client to allow binding, and transform to/from EAV form on the server (spam preventer stopped me from posting a URL here, I'll try it in a comment). Dynamic LINQ (CreateClass() and friends), although I'm way out of my depth there and don't know what the limitations on that approach might be yet. I'm interested in comments on these approaches as well as alternative approaches that might solve the problem. Other Notes The Silverlight client will not be the only consumer of the service, making me slightly uncomfortable with option #1 above. While the data model is flexible, it's not expected to be modified heavily. For argument's sake, we could assume that we might have 25 distinct data models active at a given time, with something like 10-20 unique data fields/rules each. Modifications to the data model will happen infrequently (typically when a new user is initially configured).

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• How to add on key down and on key up event in java script

  - by Ramesh

  Hello , I am creating an live search for my blog..i got this from w3 schools and i need to add on keyboard up,down mouse up and down event ... <html> <head> <script type="text/javascript"> function showResult(str) { if (str.length==0) { document.getElementById("livesearch").innerHTML=""; document.getElementById("livesearch").style.border="0px"; return; } if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("livesearch").innerHTML=xmlhttp.responseText; document.getElementById("livesearch").style.border="1px solid #A5ACB2"; } } xmlhttp.open("GET","livesearch.php?q="+str,true); xmlhttp.send(); } </script> </head> <body> <form> <input type="text" size="30" onkeyup="showResult(this.value)" /> <div id="livesearch"></div> </form> </body> </html>

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• How to convert String format dates to Date format dates?

  - by Jani Bela

  I have a string with dates it looks like: "20120316 20120317 20120318" ... I store this dates in this format, but I would like to make a Date array from these numbers with the format 03/16 03/17 03/18 ... So far: String[] DailyDatasOnce2 = DatesOnce.split(" "); DailyDatasOnce = new String[DailyDatasOnce2.length]; for (int i=0;i< (DailyDatasOnce2.length) ;i++){ DailyDatasOnce[i]=DailyDatasOnce2[i]; } datumok = new Date[DailyDatasOnce.length]; for (int i=0;i< (DailyDatasOnce.length) ;i++){ SimpleDateFormat curFormater = new SimpleDateFormat("yyyyMMdd"); java.util.Date dateObj = null; java.util.Date dateObj2 = null; try { dateObj = curFormater.parse(DailyDatasOnce[i]); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } SimpleDateFormat postFormater = new SimpleDateFormat("MM/dd"); String newDateStr = postFormater.format(dateObj); try { dateObj2 = curFormater.parse(newDateStr); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } datumok[i] = dateObj2; } So first I make a string array with the string dates (DailyDatasOnce), maybe that first for loop is useless but i can skip it. Now I make a Date array and I want to put the dates into it. I format the dates to format I want, then I try to convert them to Date format. Until the String newDateStr it is working, I manage to change the type of the date. But I get syntax error: Type mismatch: Cannot convert from java.util.date to java.sql.data. I suspect the problem but if it is not possible, how can i do this?

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