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• YouTube SEO: Video Optimization

  - by Mike Stiles

  SEO optimization is still regarded as one of the primary tools in the digital marketing kit. However and wherever a potential customer is conducting a search, brands want their content to surface in the top results. Makes sense. But without a regular flow of good, relevant content, your SEO opportunities run shallow. We know from several studies video is one of the most engaging forms of content, so why not make sure that in addition to being cool, your videos are helping you win the SEO game? Keywords:-Decide what search phrases make the most sense for your video. Don’t dare use phrases that have nothing to do with the content. You’ll make people mad.-Research those keywords to see how competitive they are. Adjust them so there are still lots of people searching for it, but there are not as many links showing up for it.-Search your potential keywords and phrases to see what comes up. It’s amazing how many people forget to do that. Video Title: -Try to start and/or end with your keyword.-When you search on YouTube, visual action words tend to come up as suggested searches. So try to use action words. Video Description: -Lead with a link to your site (include http://). -Don’t stuff this with your keyword. It leads to bad writing and it won’t work anyway. This is where you convince people to watch, so write for humans. Use some showmanship. -At the end, do a call to action (subscribe, see the whole playlist, visit our social channels, etc.) Video Tags:-Don’t over-tag. 5-10 tags per video is plenty. -If you’re compelled to have more than 10, that means you should probably make more videos specifically targeting all those keywords. Find Linking Pals:-45% of videos are discovered on video sites. But 44% are found through links on blogs and sites.-Write a blog about your video’s content, then link to the video in it. -A good site for finding places to guest blog is myblogguest.com-Once you find good linking partners, they’ll link to your future videos (as long as they’re good and you’re returning the favor). Tap the Power of Similar Videos:-Use Video Reply to associate your video with other topic-related videos. That’s when you make a video responding to or referencing a video made by someone else. Content:-Again, build up a portfolio of videos, not just one that goes after 30 keywords.-Create shorter, sequential videos that pull them deeper into the content and closer to a desired final action.-Organize your video topics separately using Playlists. Playlists show up as a whole in search results like individual videos, so optimize playlists the same as you would for a video. Meta Data:-Too much importance is placed on it. It accounts for only 15% of search success.-YouTube reads Captions or Transcripts to determine what a video is about. If you’re not using them, you’re missing out.-You get the SEO benefit of captions and transcripts whether the viewers has them toggled on or not. Promotion:-This accounts for 25% of search success.-Promote the daylights out of your videos using your social channels and digital assets. Don’t assume it’s going to magically get discovered. -You can pay to promote your video. This could surface it on the YouTube home page, YouTube search results, YouTube related videos, and across the Google content network. Community:-Accounts for 10% of search success.-Make sure your YouTube home page is a fun place to spend time. Carefully pick your featured video, and make sure your Playlists are featured. -Participate in discussions so users will see you’re present. The volume of ratings/comments is as important as the number of views when it comes to where you surface on search. Video Sitemaps:-As with a web site, a video sitemap helps Google quickly index your video.-Google wants to know title, description, play page URL, the URL of the thumbnail image you want, and raw video file location.-Sitemaps are xml files you host or dynamically generate on your site. Once you’ve made your sitemap, sign in and submit it using Google webmaster tools. Just as with the broadcast and cable TV channels, putting a video out there is only step one. You also have to make sure everybody knows it’s there so the largest audience possible can see it. Here’s hoping you get great ratings. @mikestiles

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• Two Values Enter, One Value Leaves

  - by Bunch

  This is a fairly easy way to compare values for two different controls. In this example a user needs to enter in a street address and zip code OR pick a county. After that the application will display location(s) based on the value. The application only wants a specific street/zip combination or a county, not both. This code shows how to check for that on an ASP.Net page using some JavaScript. The control code: <table>     <tr>         <td>             <label style="color: Red;">Required Fields</label>         </td>         <td style="width: 300px;">             <label style="color: Red; font-weight: bold;" id="reqAlert" ></label>         </td>     </tr>     <tr>         <td>             <asp:Label ID="Label3" runat="server" Text="Street Address"></asp:Label>         </td>         <td style="width: 200px;">             <input id="Street" type="text" style="width: 200px;" />         </td>     </tr>      <tr>         <td>             <asp:Label ID="Label5" runat="server" Text="Zip Code"></asp:Label>             &nbsp;         </td>         <td style="width: 200px;">             <input id="Zip" type="text" style="width: 200px;"/>         </td>     </tr>     <tr>         <td>             <label style="color: Red; font-size: large;">-- OR --</label>         </td>     </tr>     <tr>         <td>             <asp:Label ID="Label2" runat="server" Text="County"></asp:Label>         </td>         <td style="width: 200px;">             <asp:DropDownList ID="ddlCounty" runat="server">                 <asp:ListItem Value="0" Text="" />                 <asp:ListItem Value="1" Text="County A" />                 <asp:ListItem Value="2" Text="County B" />                 <asp:ListItem Value="3" Text="County C" />                                </asp:DropDownList>         </td>     </tr> </table> <input id="btnMapSearch" type="button" value="Search" onclick="requiredVal()" class="actionButton" /> The onclick for the button runs the requiredVal javascript function. That is where the checks take place. If only one item (street/zip or county) has been entered the application will carry on with it’s locateAddr function; otherwise it will show an error message in the label reqAlert. The javascript: function requiredVal() {     var street = document.getElementById("Street").value;     var zip = document.getElementById("Zip").value;     var countyDdl = document.getElementById("ctl00_Content_ddlCounty");     var county = countyDdl.options[countyDdl.selectedIndex].text;     var reqAlert = document.getElementById("reqAlert");     reqAlert.innerHTML = '';   //clears out any previous messages     if (street != '' || zip != '') {         if (county != '') {             reqAlert.innerHTML = 'Please select only one required option';  //values for both were entered         }         else {             locateAddr();         }     }     else if (street == '' && zip == '' && county == '') {         reqAlert.innerHTML = 'Please select a required option';  //no values entered     }     else {         locateAddr();     } } Technorati Tags: ASP.Net,JavaScript

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• WPF - ListView within listView Scrollbar problem

  - by Josh

  So I currently have a ListView "List A" who's items each have an expander control which contains another ListView "List B". The problem I am having is that sometimes List B grows so big that it extends beyond the range of List A's view area. List A's scroll bars do not pick up the fact that parts of List B are not being displayed. Is there a way to setup my xaml so that the scroll bars for List A will detect when the list inside the expander is longer then the viewing area of List A. Here is the section of code I need to modify: <TabItem Header="Finished"> <TabItem.Resources> <ResourceDictionary> <DataTemplate x:Key="EpisodeItem"> <DockPanel Margin="30,3"> <TextBlock Text="{Binding Title}" DockPanel.Dock="Left" /> <WrapPanel Margin="10,0" DockPanel.Dock="Right"> <TextBlock Text="Finished at: " /> <TextBlock Text="{Binding TimeAdded}" /> </WrapPanel> </DockPanel> </DataTemplate> <DataTemplate x:Key="AnimeItem"> <DockPanel Margin="5,10"> <Image Height="75" Width="Auto" Source="{Binding ImagePath}" DockPanel.Dock="Left" VerticalAlignment="Top"/> <Expander Template="{StaticResource AnimeExpanderControlTemplate}" > <Expander.Header> <TextBlock FontWeight="Bold" Text="{Binding AnimeTitle}" /> </Expander.Header> <ListView ItemsSource="{Binding Episodes}" ItemTemplate="{StaticResource EpisodeItem}" BorderThickness="0,0,0,0" /> </Expander> </DockPanel> </DataTemplate> </ResourceDictionary> </TabItem.Resources> <ListView Name="finishedView" ItemsSource="{Binding UploadedAnime, diagnostics:PresentationTraceSources.TraceLevel=High}" ItemTemplate="{StaticResource AnimeItem}" /> </TabItem> List A is the ListView with name "finishedView" and List B is the ListView with ItemSource "Episodes"

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• ASP.NET 3.5 GridView - row editing - dynamic binding to a DropDownList

  - by marc_s

  This is driving me crazy :-) I'm trying to get a ASP.NET 3.5 GridView to show a selected value as string when being displayed, and to show a DropDownList to allow me to pick a value from a given list of options when being edited. Seems simple enough? My gridview looks like this (simplified): <asp:GridView ID="grvSecondaryLocations" runat="server" DataKeyNames="ID" OnInit="grvSecondaryLocations_Init" OnRowCommand="grvSecondaryLocations_RowCommand" OnRowCancelingEdit="grvSecondaryLocations_RowCancelingEdit" OnRowDeleting="grvSecondaryLocations_RowDeleting" OnRowEditing="grvSecondaryLocations_RowEditing" OnRowUpdating="grvSecondaryLocations_RowUpdating" > <Columns> <asp:TemplateField> <ItemTemplate> <asp:Label ID="lblPbxTypeCaption" runat="server" Text='<%# Eval("PBXTypeCaptionValue") %>' /> </ItemTemplate> <EditItemTemplate> <asp:DropDownList ID="ddlPBXTypeNS" runat="server" Width="200px" DataTextField="CaptionValue" DataValueField="OID" /> </EditItemTemplate> </asp:TemplateField> </asp:GridView> The grid gets displayed OK when not in editing mode - the selected PBX type shows its value in the asp:Label control. No surprise there. I load the list of values for the DropDownList into a local member called _pbxTypes in the OnLoad event of the form. I verified this - it works, the values are there. Now my challenge is: when the grid goes into editing mode for a particular row, I need to bind the list of PBX's stored in _pbxTypes. Simple enough, I thought - just grab the drop down list object in the RowEditing event and attach the list: protected void grvSecondaryLocations_RowEditing(object sender, GridViewEditEventArgs e) { grvSecondaryLocations.EditIndex = e.NewEditIndex; GridViewRow editingRow = grvSecondaryLocations.Rows[e.NewEditIndex]; DropDownList ddlPbx = (editingRow.FindControl("ddlPBXTypeNS") as DropDownList); if (ddlPbx != null) { ddlPbx.DataSource = _pbxTypes; ddlPbx.DataBind(); } .... (more stuff) } Trouble is - I never get anything back from the FindControl call - seems like the ddlPBXTypeNS doesn't exist (or can't be found). What am I missing?? Must be something really stupid.... but so far, all my Googling, reading up on GridView controls, and asking buddies hasn't helped. Who can spot the missing link? ;-) Marc

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• jQuery AutoComplete select firing after change?

  - by Zarigani

  I'm using the jQuery UI AutoComplete control (just updated to jQuery UI 1.8.1). Whenever the user leaves the text box, I want to set the contents of the text box to a known-good value and set a hidden ID field for the value that was selected. Additionally, I want the page to post back when the contents of the text box are changed. Currently, I am implementing this by having the autocomplete select event set the hidden id and then a change event on the text box which sets the textbox value and, if necessary, causes a post back. If the user just uses the keyboard, this works perfectly. You can type, use the up and down arrows to select a value and then tab to exit. The select event fires, the id is set and then the change event fires and the page posts back. If the user starts typing and then uses the mouse to pick from the autocomplete options though, the change event fires (as focus shifts to the autocomplete menu?) and the page posts back before the select event has a chance to set the ID. Is there a way to get the change event to not fire until after the select event, even when a mouse is used? $(function() { var txtAutoComp_cache = {}; var txtAutoComp_current = { label: $('#txtAutoComp').val(), id: $('#hiddenAutoComp_ID').val() }; $('#txtAutoComp').change(function() { if (this.value == '') { txtAutoComp_current = null; } if (txtAutoComp_current) { this.value = txtAutoComp_current.label ? txtAutoComp_current.label : txtAutoComp_current; $('#hiddenAutoComp_ID').val(txtAutoComp_current.id ? txtAutoComp_current.id : txtAutoComp_current); } else { this.value = ''; $('#hiddenAutoComp_ID').val(''); } // Postback goes here }); $('#txtAutoComp').autocomplete({ source: function(request, response) { var jsonReq = '{ "prefixText": "' + request.term.replace('\\', '\\\\').replace('"', '\\"') + '", "count": 0 }'; if (txtAutoComp_cache.req == jsonReq && txtAutoComp_cache.content) { response(txtAutoComp_cache.content); return; } $.ajax({ url: 'ajaxLookup.asmx/CatLookup', contentType: 'application/json; charset=utf-8', dataType: 'json', data: jsonReq, type: 'POST', success: function(data) { txtAutoComp_cache.req = jsonReq; txtAutoComp_cache.content = data.d; response(data.d); if (data.d && data.d[0]) { txtAutoComp_current = data.d[0]; } } }); }, select: function(event, ui) { if (ui.item) { txtAutoComp_current = ui.item; } $('#hiddenAutoComp_ID').val(ui.item ? ui.item.id : ''); } }); });

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• Runge-Kutta (RK4) integration for game physics

  - by Kai

  Gaffer on Games has a great article about using RK4 integration for better game physics. The implementation is straightforward but the math behind it confuses me. I understand derivatives and integrals on a conceptual level but I haven't manipulated equations in a long time. Here's the brunt of Gaffer's implementation: void integrate(State &state, float t, float dt) { Derivative a = evaluate(state, t, 0.0f, Derivative()); Derivative b = evaluate(state, t+dt*0.5f, dt*0.5f, a); Derivative c = evaluate(state, t+dt*0.5f, dt*0.5f, b); Derivative d = evaluate(state, t+dt, dt, c); const float dxdt = 1.0f/6.0f * (a.dx + 2.0f*(b.dx + c.dx) + d.dx); const float dvdt = 1.0f/6.0f * (a.dv + 2.0f*(b.dv + c.dv) + d.dv) state.x = state.x + dxdt * dt; state.v = state.v + dvdt * dt; } Can anybody explain in simple terms how RK4 works? Specifically, why are we averaging the derivatives at 0.0f, 0.5f, 0.5f, and 1.0f? How is averaging derivatives up to the 4th order different from doing a simple euler integration with a smaller timestep? After reading the accepted answer below, and several other articles, I have a grasp on how RK4 works. To answer my own questions: Can anybody explain in simple terms how RK4 works? RK4 takes advantage of the fact that we can get a much better approximation of a function if we use its higher-order derivatives rather than just the first or second derivative. That's why the Taylor series converges much faster than Euler approximations. (take a look at the animation on the right side of that page) Specifically, why are we averaging the derivatives at 0.0f, 0.5f, 0.5f, and 1.0f? The Runge-Kutta method is an approximation of a function that samples derivatives of several points within a timestep, unlike the Taylor series which only samples derivatives of a single point. After sampling these derivatives we need to know how to weigh each sample to get the closest approximation possible. An easy way to do this is to pick constants that coincide with the Taylor series, which is how the constants of a Runge-Kutta equation are determined. This article made it clearer for me: http://web.mit.edu/10.001/Web/Course%5FNotes/Differential%5FEquations%5FNotes/node5.html. Notice how (15) is the Taylor series expansion while (17) is the Runge-Kutta derivation. How is averaging derivatives up to the 4th order different from doing a simple euler integration with a smaller timestep? Mathematically it converges much faster than doing many Euler approximations. Of course, with enough Euler approximations we can gain equal accuracy to RK4, but the computational power needed doesn't justify using Euler.

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• C# MP3 Player using winmm.dll

  - by JoeBeez

  I'm trying to bash together a (very) rough MP3 player during my lunch hour, and so far I've got it to play the files, and I'm working on a way of building a list of filenames to enable random songs, but I think I've just hit a snag. Is there a way of knowing when the currently playing MP3 has finished? An event or some such? As it stands I don't think I'd be able to have playlists etc unless this was possible due to it stopping after every playback. I've attatched the whole source below, feel free to pick it apart and give me any feedback you may have, cheers. using System; using System.IO; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; namespace X { public partial class Form1 : Form { List<string> Names = new List<string>(); StreamReader reader = File.OpenText(@"C:\X.txt"); string line; OpenFileDialog ofd = new OpenFileDialog(); StringBuilder buffer = new StringBuilder(128); string CommandString; [DllImport("winmm.dll")] private static extern long mciSendString(string lpstrCommand, StringBuilder lpstrReturnString, int uReturnLength, int hwndCallback); public Form1() { InitializeComponent(); while ((line = reader.ReadLine()) != null) { if (line.Trim() != "") { Names.Add(line.Trim()); } } } private void btnplay_Click(object sender, EventArgs e) { if (ofd.FileName == "") { if (ofd.ShowDialog() == DialogResult.OK) { ofd.Filter = "MP3 Files|*.mp3"; CommandString = "open " + "\"" + ofd.FileName + "\"" + " type MPEGVideo alias Mp3File"; mciSendString(CommandString, null, 0, 0); CommandString = "play Mp3File"; mciSendString(CommandString, null, 0, 0); } } else { CommandString = "play Mp3File"; mciSendString(CommandString, null, 0, 0); } } private void btnpause_Click(object sender, EventArgs e) { CommandString = "pause mp3file"; mciSendString(CommandString, null, 0, 0); } private void btnbrowse_Click(object sender, EventArgs e) { ofd.Filter = "Mp3 files |*.mp3"; if (ofd.ShowDialog() == DialogResult.OK) { txtpath.Text = ofd.FileName; CommandString = "close Mp3File"; mciSendString(CommandString, null, 0, 0); CommandString = "open " + "\"" + ofd.FileName + "\"" + " type MPEGVideo alias Mp3File"; mciSendString(CommandString, null, 0, 0); } } } }

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• Removing expired certificates from LDS (new ver of ADAM)

  - by jonthebrewer

  Hi all. This is my situation: We are in the process of replacing a certificate store currently hosted on Sun's iPlanet with Microsoft's Lightweight Directory Services (new version of ADAM with Server 2008). These certificates have been imported into LDS into an application partition (say o=myorg, C=AU). Under this structure I have around 40,000 OU's each one representing a customer under each customers OU are one or more user (iNetOrg) objects (around 60,000 in all). In each user are one or more certificates in the UserCertificate attribute. A combination of in-house written application code and proprietory PKI code reads and publishes these certficates to validate financial transactions. As the LDAP path of the certificates is stored within the customer certificates (and within the application code) and there is zero appetite for changing any of the code, I have had to pick up the iPlanet directory as a whole and dump it in LDS in the same structure. (I will not be using or hosting a Microsoft CA, just implementing an LDAP compliant directory to host these certificates) We have fully tested the application using the data in LDS and everything works fine - here is my dilema and question (finally, phew!) There was no process put in place for removing revoked or expired certificates, consequently the vast majority of the data is completely useless, the system has been running for about 8 years! I have done a quick analysis and I estimate that at least 80% of the data is no longer valid. As I am taking on responsibility for managing the directory I would like to start with a clean directory. Does anyone have any idea how I can cleanup these expired certificates. I am not a highly experienced scripter but have some background in VB. I have been researching the use of CAPICOM and have a feeling this may be able to be used but in exactly what way I am not sure?? I would prefer to write a script that I could specify an expiration date (say any certs that expired prior to 2010) then run against the LDS paritition. This way I can reuse the script periodically to cleanup the directory (as mentioned above - I have no way to adjust the applications that are writing the certs, this is with a third party). Another, less attractive, alternative is to massage the LDIF file (2.7 million lines!) to rip the certs out prior to the import Any help and advice MUCH appreciated. Cheers Jon

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• Dynamic Colorbox galleries using Ajax

  - by Gobitron

  Hi, I am new to jQuery / AJAX. I have a page that uses colorbox to display photo galleries. The page displays only one image from each gallery. When clicked, a colorbox opens up with all of the photos from that gallery. These inner photo references (for all photos from all galleries) are hidden on the page in an invisible div. The page is a PHP generated page. The galleries/photos are being populated via Picasa. All of the above works fine, but instead of loading all of the images from all galleries on page load (via PHP), I'd like to load only the requested gallery into the colorbox via AJAX. So far, I have a test page which can insert the proper links into a div on the page, but the Colorbox won't pick up on these links. This is where I need help. How can I get Colorbox to recognize the links generated by my AJAX call? The colorbox scripts sit in the header: <script type="text/javascript" src="libs/js/jquery.colorbox.js"></script> <script type="text/javascript"> //Writing out the ColorBox command for each album $(document).ready(function(){ <?php $setnum = 0; foreach ($albumIds as $albumId){ echo "\t\t\t$(\"a[rel='set" . $setnum . "']\").colorbox({maxWidth:\"640px\", maxHeight:\"480px\"});\n"; $setnum++; } ?> }); </script> Here is my get JSON code located in the body section of the page: $.getJSON("myserv.php",formContent, function(json){ var photos = json.data.items; var numpics = json.data.items.length; var pointer = 1; while (pointer < numpics){ var stuffineed = photos[pointer].media.image.url; $("#ajaxBox").append("<a href='" + stuffineed + "' rel='set" + pointer +"'>" + photos[pointer].media.image.url + "</a><br />"); pointer++; } }); //End json Again, I can get the AJAX to populate the div correctly, but the colorbox script isn't picking up these images. Any help would be greatly appreciated.

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• How to change Jquery UI Slider handle

  - by Tom

  I want to modify the stock JQuery UI slider so that the handle has a arrow on it rather than being a square. i.e. I want to use a custom image as the handle. There are a few tutorials that do it: http://jqueryfordesigners.com/slider-gallery/ http://www.ryancoughlin.com/2008/11/04/using-the-jquery-ui-slider/ http://www.keepthewebweird.com/creating-a-nice-slider-with-jquery-ui/ But I can't get it to work. The following code results in a stationary handle image: <!DOCTYPE html> <html> <head> <link type="text/css" href="http://jqueryui.com/latest/themes/base/ui.all.css" rel="stylesheet" /> <script type="text/javascript" src="http://jqueryui.com/latest/jquery-1.3.2.js"></script> <script type="text/javascript" src="http://jqueryui.com/latest/ui/ui.core.js"></script> <script type="text/javascript" src="http://jqueryui.com/latest/ui/ui.slider.js"></script> <style type="text/css"> #myhandle {position: absolute;z-index: 100;height: 25px;width: 35px;top: auto;background: url(http://stackoverflow.com/content/img/so/vote-arrow-down.png) no-repeat;} </style> <script type="text/javascript"> $(document).ready(function(){ $("#slider").slider({handle: '#myhandle'}); }); </script> </head> <body> <div id="slider"><div id="myhandle"></div></div> </body> </html> It is as if JQuery doesn't pick up that I want to use the myhandle id for the handle. I'm wondering: Do I need a plugin for JQuery to recognise the handle option? (it is not documented in http://docs.jquery.com/UI/Slider). Or perhaps it only worked in an old version of JQuery? Any ideas?

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• How to select one object from a NSArray?

  - by 0SX

  First of all Merry Christmas to everyone!!! Currently I have a NSArray that has parsed content in it. When I do a NSLog of the array it prints out 20 objects with the parsed content that I needed. Like so: 2010-12-24 20:27:32.170 TestProject[48914:298] SomeContent 2010-12-24 20:27:32.172 TestProject[48914:298] SomeContent1 2010-12-24 20:27:32.172 TestProject[48914:298] SomeContent2 2010-12-24 20:27:32.173 TestProject[48914:298] SomeContent3 2010-12-24 20:27:32.173 TestProject[48914:298] SomeContent4 2010-12-24 20:27:32.173 TestProject[48914:298] SomeContent5 2010-12-24 20:27:32.174 TestProject[48914:298] SomeContent6 2010-12-24 20:27:32.175 TestProject[48914:298] SomeContent7 2010-12-24 20:27:32.176 TestProject[48914:298] SomeContent8 2010-12-24 20:27:32.176 TestProject[48914:298] SomeContent9 2010-12-24 20:27:32.177 TestProject[48914:298] SomeContent10 2010-12-24 20:27:32.177 TestProject[48914:298] SomeContent11 2010-12-24 20:27:32.177 TestProject[48914:298] SomeContent12 2010-12-24 20:27:32.179 TestProject[48914:298] SomeContent13 2010-12-24 20:27:32.179 TestProject[48914:298] SomeContent14 2010-12-24 20:27:32.180 TestProject[48914:298] SomeContent15 2010-12-24 20:27:32.180 TestProject[48914:298] SomeContent16 2010-12-24 20:27:32.181 TestProject[48914:298] SomeContent17 2010-12-24 20:27:32.181 TestProject[48914:298] SomeContent18 2010-12-24 20:27:32.190 TestProject[48914:298] SomeContent19 However, I don't need every object at once. I need to be able to pick out one object at a time so I can put each object into a string of it's own. If anyone knows a easier way to do this then what I'm trying to please let me know. Anyways, I need to be able to choose just one object depending on what object I need. For example, let's say I only need object #5 and not all the array, how can this be done so I can put it into a string? I'm thinking I might have to use the index feature but I'm not sure how to set it up properly. Here is my NSArray that I'm working with: NSArray* myArray = [document selectElements: @"div.someContent"]; NSMutableArray* results = [NSMutableArray array]; for (Element* element in myArray){ NSString* snipet = [element contentsSource]; [results addObject: snipet]; NSLog(@"%@", snipet); } NSLog(@"%i",myArray.count); I've already spent several hours trying to achieve this but my knowledge with array's is limited even with me reading the documentation. :-( Any help is much appreciated. Thanks

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• Project References DLL version hell

  - by Mr Shoubs

  We're having problems getting visual studio to pick up the latest version of a DLL from one of our projects. We have multiple class library projects (e.g. BusinessLogic, ReportData) and a number of web services, each has a reference to a Connectivity DLL we've written (this ref to the connectivity DLL is the problem). We always point references to the DLL in the bin/debug folder, (which is where we always build to for any given project) and all custom DLL references have CopyLocal = True and SpecificVersion = False ReportData has a reference to business logic (which also has a reference to connectivity - I don't see why this should cause a problem, but thought it is worth mentioning) The weird thing is, when you click "Add Reference" and browse to Connectivity/bin/debug - you hover the mouse over the DLL file, the correct (latest) version is shown (version and file version are always incremented together), but when you click ok, a previous version number is pulled though. Even when I look in the current projects debug folder (where copy local would put the DLL after compiling) that shows the latest version number. - NO WHERE does can I find the previous version of the DLL outside of visual studio, but in that project references it has the old version - even though the path is correct. I'm at a loss as to where it might be getting the old versions from. Or even why it wants that one. This is possibly the most frustraighting problem I have ever come across. Does anyone know how to ensure the latest version is pulled through (preferably automatically or on compile). EDIT: Although not exactly the scenario I'm dealing with I was reading this article and somewhere it mentions about CLR ignoring revision numbers. Understandable (even though this hasn't been a problem before - we're on revision 39), so I thought I would update the build number, still didn't work. In a vain attempt I though I would update the minor version number and see if that made any difference. I'm not saying this is the answer as I have to check quite a few things first, but on the face of it, this seems to have solved my problem... Further edit: In other class libraries this seems to have solved the problem, however in a test windows application it still pulls a previous version through :( If I increment the minor version number again, the same problem come back and I am left with the wrong version being pulled though. Further Edit - I created an entirly new project, added a reference and still had the exact same problem. This suggests the problem is restriced to the project I am referencing. Wish I knew why! Anyone had this problem before and know how to get around it? HELP!

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• XML: Process large data

  - by Atmocreations

  Hello What XML-parser do you recommend for the following purpose: The XML-file (formatted, containing whitespaces) is around 800 MB. It mostly contains three types of tag (let's call them n, w and r). They have an attribute called id which i'd have to search for, as fast as possible. Removing attributes I don't need could save around 30%, maybe a bit more. First part for optimizing the second part: Is there any good tool (command line linux and windows if possible) to easily remove unused attributes in certain tags? I know that XSLT could be used. Or are there any easy alternatives? Also, I could split it into three files, one for each tag to gain speed for later parsing... Speed is not too important for this preparation of the data, of course it would be nice when it took rather minutes than hours. Second part: Once I have the data prepared, be it shortened or not, I should be able to search for the ID-attribute I was mentioning, this being time-critical. Estimations using wc -l tell me that there are around 3M N-tags and around 418K W-tags. The latter ones can contain up to approximately 20 subtags each. W-Tags also contain some, but they would be stripped away. "All I have to do" is navigating between tags containing certain id-attributes. Some tags have references to other id's, therefore giving me a tree, maybe even a graph. The original data is big (as mentioned), but the resultset shouldn't be too big as I only have to pick out certain elements. Now the question: What XML parsing library should I use for this kind of processing? I would use Java 6 in a first instance, with having in mind to be porting it to BlackBerry. Might it be useful to just create a flat file indexing the id's and pointing to an offset in the file? Is it even necessary to do the optimizations mentioned in the upper part? Or are there parser known to be quite as fast with the original data? Little note: To test, I took the id being on the very last line on the file and searching for the id using grep. This took around a minute on a Core 2 Duo. What happens if the file grows even bigger, let's say 5 GB? I appreciate any notice or recommendation. Thank you all very much in advance and regards

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• SmoApplication.EnumAvailableSqlServers returns server names but not instance names (but only on one

  - by Matma

  Hi, There are a number of questions about this and a number of possible causes and thus far ive tried them all with no success. situation: i have an app that needs a db to work, onstartup it does a SmoApplication.EnumAvailableSqlServers(false) to get all the instances on the network, shows the user a dropdown, they pick one and i go connect to my db on that server. all good problem: this works on my machine, the guys next to me and others. HOWEVER it doesnt work on one of the tech guys machines (and potentially others). we are all on the same network domain, physically connected (no wireless), all logged on with network user names, all running the same sql express 2005 sp3, though im using win7 the other guys are running xppro. MSSMS on all machines can see all the instances when you select "Browse for more". yet on this one tech guys machine it lists his local instance (since its hardcoded to) and all the network servers, but has no instances names? i.e. .sqlexpress server1 server2 server3 server4 but on my machine and others we get: .sqlexpress server1/sqlexpress server2/sqlexpress server3/sqlexpress server4/sqlexpress the code im using: ' .... some code ' this populates my datatable dtServers = SmoApplication.EnumAvailableSqlServers(False) '.... some code '.... then later i ShowServers(...) Private dtServers As DataTable = Nothing Private Sub ShowServers(ByVal SQLInstance As String) ' Create a DataTable where we enumerate the available servers cmbServer.Items.Clear() cmbDatabase.Items.Clear() ' If there are any (network listed) servers at all If (dtServers.Rows.Count > 0) Then ' Loop through each server in the DataTable For Each drServer As DataRow In dtServers.Rows ' Add the name to the combobox cmbServer.Items.Add(drServer("Server") & "\" & drServer("Instance")) Next End If 'To make life simpler (add the local instance of sql express): cmbServer.Items.Add(SQLInstance) ' select first item If cmbServer.Items.Count > 0 Then cmbServer.SelectedIndex = 0 End If End Sub now i know this uses udp and its not 100%, but how come his machine is 100% consistent in not showing remote instances, and mine is 100 consistent showing them. even a udl file on his desktop cant see them, regarldess of provider i choose to use? some of the suggestions are to uninstall and re-install, but that doesnt seem like a solution as i (and most others) can see the instances, but one guy cant. this suggests its not the remote sql server but rather the local machine. Notes: ive tried firewall 1433, 1434 i can connect using a udl with full SERVERNAME\INSTANCENAME the browser service is running locally and on the remote machine ive tried stopping and restarting both the browser service on the local and remote machine. Ideas?

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• Why are there connections open to my databases?

  - by Everett

  I have a program that stores user projects as databases. Naturally, the program should allow the user to create and delete the databases as they need to. When the program boots up, it looks for all the databases in a specific SQLServer instance that have the structure the program is expecting. These database are then loaded into a listbox so the user can pick one to open as a project to work on. When I try to delete a database from the program, I always get an SQL error saying that the database is currently open and the operation fails. I've determined that the code that checks for the databases to load is causing the problem. I'm not sure why though, because I'm quite sure that all the connections are being properly closed. Here are all the relevant functions. After calling BuildProjectList, running "DROP DATABASE database_name" from ExecuteSQL fails with the message: "Cannot drop database because it is currently in use". I'm using SQLServer 2005. private SqlConnection databaseConnection; private string connectionString; private ArrayList databases; public ArrayList BuildProjectList() { //databases is an ArrayList of all the databases in an instance if (databases.Count <= 0) { return null; } ArrayList databaseNames = new ArrayList(); for (int i = 0; i < databases.Count; i++) { string db = databases[i].ToString(); connectionString = "Server=localhost\\SQLExpress;Trusted_Connection=True;Database=" + db + ";"; //Check if the database has the table required for the project string sql = "select * from TableExpectedToExist"; if (ExecuteSQL(sql)) { databaseNames.Add(db); } } return databaseNames; } private bool ExecuteSQL(string sql) { bool success = false; openConnection(); SqlCommand cmd = new SqlCommand(sql, databaseConnection); try { cmd.ExecuteNonQuery(); success = true; } catch (SqlException ae) { MessageBox.Show(ae.Message.ToString()); } closeConnection(); return success; } public void openConnection() { databaseConnection = new SqlConnection(connectionString); try { databaseConnection.Open(); } catch(Exception e) { MessageBox.Show(e.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } public void closeConnection() { if (databaseConnection != null) { try { databaseConnection.Close(); } catch (Exception e) { MessageBox.Show(e.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } }

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• How to implement a SIMPLE "You typed ACB, did you mean ABC?"

  - by marcgg

  I know this is not a straight up question, so if you need me to provide more information about the scope of it, let me know. There are a bunch of questions that address almost the same issue (they are linked here), but never the exact same one with the same kind of scope and objective - at least as far as I know. Context: I have a MP3 file with ID3 tags for artist name and song title. I have two tables Artists and Songs The ID3 tags might be slightly off (e.g. Mikaell Jacksonne) I'm using ASP.NET + C# and a MSSQL database I need to synchronize the MP3s with the database. Meaning: The user launches a script The script browses through all the MP3s The script says "Is 'Mikaell Jacksonne' 'Michael Jackson' YES/NO" The user pick and we start over Examples of what the system could find: In the database... SONGS = {"This is a great song title", "This is a song title"} ARTISTS = {"Michael Jackson"} Outputs... "This is a grt song title" did you mean "This is a great song title" ? "This is song title" did you mean "This is a song title" ? "This si a song title" did you mean "This is a song title" ? "This si song a title" did you mean "This is a song title" ? "Jackson, Michael" did you mean "Michael Jackson" ? "JacksonMichael" did you mean "Michael Jackson" ? "Michael Jacksno" did you mean "Michael Jackson" ? etc. I read some documentation from this /how-do-you-implement-a-did-you-mean and this is not exactly what I need since I don't want to check an entire dictionary. I also can't really use a web service since it's depending a lot on what I already have in my database. If possible I'd also like to avoid dealing with distances and other complicated things. I could use the google api (or something similar) to do this, meaning that the script will try spell checking and test it with the database, but I feel there could be a better solution since my database might end up being really specific with weird songs and artists, making spell checking useless. I could also try something like what has been explained on this post, using Soundex for c#. Using a regular spell checker won't work because I won't be using words but names and 'titles'. So my question is: is there a relatively simple way of doing this, and if so, what is it? Any kind of help would be appreciated. Thanks!

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• Calculate year for end date: PostgreSQL

  - by Dave Jarvis

  Background Users can pick dates as shown in the following screen shot: Any starting month/day and ending month/day combinations are valid, such as: Mar 22 to Jun 22 Dec 1 to Feb 28 The second combination is difficult (I call it the "tricky date scenario") because the year for the ending month/day is before the year for the starting month/day. That is to say, for the year 1900 (also shown selected in the screen shot above), the full dates would be: Dec 22, 1900 to Feb 28, 1901 Dec 22, 1901 to Feb 28, 1902 ... Dec 22, 2007 to Feb 28, 2008 Dec 22, 2008 to Feb 28, 2009 Problem Writing a SQL statement that selects values from a table with dates that fall between the start month/day and end month/day, regardless of how the start and end days are selected. In other words, this is a year wrapping problem. Inputs The query receives as parameters: Year1, Year2: The full range of years, independent of month/day combination. Month1, Day1: The starting day within the year to gather data. Month2, Day2: The ending day within the year (or the next year) to gather data. Previous Attempt Consider the following MySQL code (that worked): end_year = start_year + greatest( -1 * sign( datediff( date( concat_ws('-', year, end_month, end_day ) ), date( concat_ws('-', year, start_month, start_day ) ) ) ), 0 ) How it works, with respect to the tricky date scenario: Create two dates in the current year. The first date is Dec 22, 1900 and the second date is Feb 28, 1900. Count the difference, in days, between the two dates. If the result is negative, it means the year for the second date must be incremented by 1. In this case: Add 1 to the current year. Create a new end date: Feb 28, 1901. Check to see if the date range for the data falls between the start and calculated end date. If the result is positive, the dates have been provided in chronological order and nothing special needs to be done. This worked in MySQL because the difference in dates would be positive or negative. In PostgreSQL, the equivalent functionality always returns a positive number, regardless of their relative chronological order. Question How should the following (broken) code be rewritten for PostgreSQL to take into consideration the relative chronological order of the starting and ending month/day pairs (with respect to an annual temporal displacement)? SELECT m.amount FROM measurement m WHERE (extract(MONTH FROM m.taken) >= month1 AND extract(DAY FROM m.taken) >= day1) AND (extract(MONTH FROM m.taken) <= month2 AND extract(DAY FROM m.taken) <= day2) Any thoughts, comments, or questions? (The dates are pre-parsed into MM/DD format in PHP. My preference is for a pure PostgreSQL solution, but I am open to suggestions on what might make the problem simpler using PHP.) Versions PostgreSQL 8.4.4 and PHP 5.2.10

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• Jquery hasClass conditional not working

  - by Wade D Ouellet

  Hey, I have my site going here: http://www.treethink.com I am trying to make it so when a navigation item is clicked, it retracts the news ticker on the right and then doesn't run any of the extracting/timer functions anymore. I got it to retract but it still extracts. How I am doing it is I am adding a "noTicker" class with the nav buttons and removing it with colorbox's close button. The function runs on the page initially and if there isn't a "noTicker" class it runs the news ticker as planned. When a nav or close button is clicked it runs the function again which checks again to see if it has that class. So if it has the class it should retract (which it is so that must mean it's adding the class properly) and then not run any of the timer functions, but it still runs the timer functions for some reason. Here is my jQuery. /* Initially hide all news items */ $('#ticker1').hide(); $('#ticker2').hide(); $('#ticker3').hide(); var randomNum = Math.floor(Math.random()*3); /* Pick random number */ newsTicker(); function newsTicker() { if (!$("#ticker").hasClass("noTicker")) { $("#ticker").oneTime(2000,function(i) { /* Do the first pull out once */ $('div#ticker div:eq(' + randomNum + ')').show(); /* Select div with random number */ $("#ticker").animate({right: "0"}, {duration: 800 }); /* Pull out ticker with random div */ }); $("#ticker").oneTime(15000,function(i) { /* Do the first retract once */ $("#ticker").animate({right: "-450"}, {duration: 800}); /* Retract ticker */ $("#ticker").oneTime(1000,function(i) { /* Afterwards */ $('div#ticker div:eq(' + (randomNum) + ')').hide(); /* Hide that div */ }); }); $("#ticker").everyTime(16500,function(i) { /* Everytime timer gets to certain point */ /* Show next div */ randomNum = (randomNum+1)%3; $('div#ticker div:eq(' + (randomNum) + ')').show(); $("#ticker").animate({right: "0"}, {duration: 800}); /* Pull out right away */ $("#ticker").oneTime(15000,function(i) { /* Afterwards */ $("#ticker").animate({right: "-450"}, {duration: 800});/* Retract ticker */ }); $("#ticker").oneTime(16000,function(i) { /* Afterwards */ /* Hide all divs */ $('#ticker1').hide(); $('#ticker2').hide(); $('#ticker3').hide(); }); }); } else { $("#ticker").animate({right: "-450"}, {duration: 800}); /* Retract ticker */ $("#ticker").oneTime(1000,function(i) { /* Afterwards */ $('div#ticker div:eq(' + (randomNum) + ')').hide(); /* Hide that div */ }); } } /* when nav item is clicked re-run news ticker function but give it new class to prevent activity */ $("#nav li").click(function() { $("#ticker").addClass("noTicker"); newsTicker(); }); /* when close button is clicked re-run news ticker function but take away new class so activity can start again */ $("#cboxClose").click(function() { $("#ticker").removeClass("noTicker"); newsTicker(); }); Thanks, Wade

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• do you want try ? [closed]

  - by gemxia

  Only with time and hard work, that can you get an IT certification. Although there are hundreds of certifications for you to pick from, the basic steps to get certified are the same. The following steps are certain to clear your puzzles about the preparation process of your <. The first step to take is choosing a certification. It is simple but at the same time very important. Make sure to choose the certifications that are respected in your industries. The second step you should take is to evaluate your experience. Find out what skills and experience the IBM certification is expecting. Then, decide what type of training is suitable for you. Preparation books will certainly not make you an expert in subjects you’re not already an expert in. But, for the subject areas you know little or nothing about, a study guide provides you clues and guidance about what the important information from those subjects is when it comes to passing the Examkiller IBM examination exam. Visit certification forums during your 000-M62 certification exam preparation. In this way, you can learn from others’ mistakes and example, meanwhile help your own studies. Achieving your goals without proper training is a sure road to failure. Knowing about a topic and having special expertise in it are completely different. One cannot be an expert in the IT industry without the proper foundation. Taking a training class for Examkiller IBM exam might be a guaranteed way. When the economy dips and budgets get tightened, one of the first things to go from corporate spending is training. There are plenty of courses, boot camps and cram sessions that promise to prepare you for the IBM exam, but they are exceptionally expensive. As much as possible, for your own benefit, you should look for resources that are free. Vendor of IBM offers free resource in their sites. These practice exams are the closest to the real exams. If you think that you have got ready for the exam, you can take the fourth now, which is registering your exam. Even if you have passed your <, yet you can’t relax, since there are still so many certifications ahead. If you have just memorized some questions and answers, excepting a fluke, then, don’t take the IBM test exam, until you really have the experience and skills the certification requires.

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• Personal Project - Next practical language/tech to learn

  - by Paul Nathan

  I'm working on a personal project doing some finance analysis. It's a totally new field for me, and I'm really having fun with it so far, plus working in the high-level language arena is a great break from my embedded systems daytime work. I have a MySQL backend on a non-local server with a pile of stock data. My task now is to do some analysis of the stocks and produce something approximating a useful result. There are a couple technical difficulties. (1) I have a lot of records. To be precise, I believe I'm near 100K records right now, and this number grows by 6.1K each weekday. I need to create a way to rummage through these fields and do data analysis - based on a given computation, go look at this other set. Fine and dandy, nothing too outre. But this means I could really use a straightforward API for talking to MySQL. (2) Ideally, it runs on OS X 10.4.11. No Windows/Linux machine at home. (3) I can use PHP, C++, Perl, etc. I even have an R installation. I'm pretty flexible with stuff, so long as it runs on OS X. (Lots of options here, pick water, H20, or dihydrogen monoxide ;-) ) (4)Lack of hassle. While I like clever and fun ways of doing things, I'm trying to get some analysis done, not spend ten hours doing installation work and scratching my head figuring out a theoretical syntax question needed to spout out "hello world". What's the question? I'd like to dig into something different than my usual PHP/C++/C toolset. I'm looking for recommendations for languages/technologies that will assist me and meet the above requirements. In particular, I've heard a lot of buzz about F# and Python on SO. I've used CLISP for small problems before, and kinda liked it. I'm seeking opinions about those in particular. edit:since I rent the DB server and have a limited amount of CPU time online, I'm trying to do the analysis on a local machine.

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• Would Ruby on Rails be appropriate for this Foreign Language project?

  - by Lynne Overesch-Maister

  I'm a Spanish professor & computer groupie. About 15 years ago, I authored in HyperCard a series of verb conjugation programs that are now completely out of date with respect to System OS X. I would like to redo these programs myself because I had a lot of fun doing them last time (mostly I coded while my son played in Leaps and Bounds, you know, one of those places where parents take their kids & let them run wild through the tubes...). Colleagues have mentioned using Flash, Director, and various other solutions, but I saw a presentation on RoR at our SIDLIT conference today, and was inspired. I will be parsing and comparing strings (and there are other features on top of that, but that is the main one), "adding" strings relationally indexed in some kind of database(s). It will also have to handle various foreign characters (accents, upside down question marks, etc.). On top of the main process of the program, it will have to provide a practice vs. test mode, keep track of specific answers as well as totals right/wrong, and print a report. Would this be either easier and/or more efficiently done in RoR than in other languages. I am pretty sure that it will work on a Microsoft server, right? Because I think that is where most of our stuff is. I would be programming either on a Mac or a PC, whichever you think is easier. So, in summary, is RoR the way for me to go with this project? If I have some (little) experience programming in Hypercard and C, should I be able to pick RoR up fairly quickly? What things will I need to start (I already saw something called Redhills foreign key migration plugin, which I assume would be beneficial)? I still have my old scripts from hypercard, however what I would really like to do is to combine all six of my former tense-specific programs into one larger program. I figure that it wouldn't be too hard to reference the individual tenses in some way--could that be a class? Many thanks for any help you can give me on this forum.

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• Is it worth moving from stored procedures to linq ?

  - by Josef

  I'm looking at standardizing programming in an organisaiton. Half uses stored procedures and the other half Linq. From what i've read there is still some debate going on on this topic. My concern is that MS is trying to slip in it's own proprietry query language 'linq' to make SQL redundant. If a few years back microsoft had tried to win customers from oracle and sybase with their MSSQL database and stated that it didn't use SQL by their own proprietry query langues ie linq. I doubt many would have switched. I believe that is exactly what is happening now by introducting it into the applicaiton business layer. I have used MS for many years but there is one gripe that I have with them and that is that they change their direction a lot. By a lot I mean new releases of .net, silverlight etc are more than 30% different from previous version. So by the time you become productive a new release is on the way. As things stand now a web developer using .net would need to know either vb.net or c#, xml, xaml,javascript,html, sql and now linq. That doesn't make for good productivity in my books. My concern is that once we all start using linq MS will start changing it between releases. and it will become an ever changing landscape. I believe that 'linq to sql' has already been deprecated. At leas with SQL we are dealing with a more stable and standardized language. Are we looking at a programming revolution or a marketing campaign? As far as I know other languages like Cobol have stayed the same for years. A cobol program from 20 years ago could pick up todays code and start working on it. Could a Vb3 person work on a modern .net web app ? Would these large changes need to be made if the underlying original foundation had been sound ? I worry about following MS shaking roadmap with it's deadends and double backs. are there any architects out there who feel the same ? regards Josef

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• Django conditional template inheritance

  - by Ed

  I have template that displays object elements with hyperlinks to other parts of my site. I have another function that displays past versions of the same object. In this display, I don't want the hyperlinks. I'm under the assumption that I can't dynamically switch off the hyperlinks, so I've included both versions in the same template. I use an if statement to either display the hyperlinked version or the plain text version. I prefer to keep them in the same template because if I need to change the format of one, it will be easy to apply it to the other right there. The template extends framework.html. Framework has a breadcrumb system and it extends base.html. Base has a simple top menu system. So here's my dilemma. When viewing the standard hyperlink data, I want to see the top menu and the breadcrumbs. But when viewing the past version plain text data, I only want the data, no menu, no breadcrumbs. I'm unsure if this is possible given my current design. I tried having framework inherit the primary template so that I could choose to call either framework (and display the breadcrumbs), or the template itself, thus skipping the breadcrumbs, but I want framework.html available for other templates as well. If framework.html extends a specific template, I lose the ability to display it in other templates. I tried writing an if statement that would display a the top_menu block and the nav_menu block from base.html and framework.html respectively. This would overwrite their blocks and allow me to turn off those elements conditional on the if. Unfortunately, it doesn't appear to be conditional; if the block elements are in the template at all, surrounded by an if or not, I lose the menus. I thought about using {% include %} to pick up the breadcrumbs and a split out top menu. In that case though, I'll have to include it all the time. No more inheritance. Is this the best option given my requirement?

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• problem with reload data from table view after come back from another view

  - by user129677

  I have a problem in my application. Any help will be greatly appreciated. Basically it is from view A to view B, and then come back from view B. In the view A, it has dynamic data loaded in from the database, and display on the table view. In this page, it also has the edit button, not on the navigation bar. When user tabs the edit button, it goes to the view B, which shows the pick view. And user can make any changes in here. Once that is done, user tabs the back button on the navigation bar, it saves the changes into the NSUserDefaults, goes back to the view A by pop the view B. When coming back to the view A, it should get the new data from the UIUserDefaults, and it did. I user NSLog to print out to the console and it shows the correct data. Also it should invoke the viewWillAppear: method to get the new data for the table view, but it didn't. It even did not call the tableView:numberOfRowsInSection: method. I place a NSLog statement inside this method but didn't print out in the console. as the result, the view A still has the old data. the only way to get the new data in the view A is to stop and start the application. both view A and view B are the subclass of UIViewController, with UITableViewDelegate and UITableViewDataSource. here is my code in the view A : - (void)viewWillAppear:(BOOL)animated { NSLog(@"enter in Schedule2ViewController ..."); // load in data from database, and store into NSArray object //[self.theTableView reloadData]; [self.theTableView setNeedsDisplay]; //[self.theTableView setNeedsLayout]; } in here, the "theTableView" is a UITableView variable. And I try all three cases of "reloadData", "setNeedsDisplay", and "setNeedsLayout", but didn't seem to work. in the view B, here is the method corresponding to the back button on the navigation bar. - (void)viewDidLoad { UIBarButtonItem *saveButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(savePreference)]; self.navigationItem.leftBarButtonItem = saveButton; [saveButton release]; } - (IBAction) savePreference { NSLog(@"save preference."); // save data into the NSUSerDefaults [self.navigationController popViewControllerAnimated:YES]; } Am I doing in the right way? Or is there anything that I missed? Many thanks.

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• Becoming a professional programmer / software engineer

  - by Matt

  This isn't strictly about programming, more about being a programmer, so I'm sorry if its not the right kind of question to ask on this forum (mod, please delete if it isn't) I'm a computer tech in the US Army, and once I'm out I'll have eight years on the job. I'm about to start a degree through an online school (the only way I can get the army to pay for it while I'm still in), and I'm seriously looking at getting a computer science degree. I'm great with computers. I can take one apart and put it back together with my eyes closed. I'm A+ and Network+ certified and I'm getting a couple other CompTIA certs before I get out. I can work Windows as well as anyone on this planet and I'm not terrible with Linux. A job in computers is something I've always wanted. But, aside from being a computer technician, it seems that every job in the field requires programming ability. I like programming as a hobby. I programmed TI BASIC in high school and I'm teaching myself Python, but that's as far as my experience goes. That sort of brings me to my questions: I've always heard that the first language is the most difficult, and once you learn it well then all the others sort of fall into place for you. Is that true? Like, if I spend the next eight months mastering Python, will I pretty much be able to pick up at least fair proficiency in any other OO language within a month of studying it or whatever? How easy is it to burn out? the biggest thing I'm afraid of is just burning out on programming. I can go all day long if I'm programming strictly for my own personal desire, but I can imagine it being really easy to burn out after a few years of programming to deadlines and certain specifications. Especially if its a big project involving a dozen different designers. From what I told you about myself, would I already be qualified to work as a regular technician (geek squad type or maybe running a computer repair shop). Is Python a good base to learn from? I've heard that it makes you hate other languages because they feel more convoluted when learning, but also that its a great beginner language. If you're a professional programmer, did you have any of the same fears? Would you recommend that I stick to computer repair and Python rather than try to get into corporate programming? (just from what you've read in this thread, anyway) Thanks for taking the time to read all this and answer (if you did)

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