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• Add/remove xml tags using a bash script.

  - by sixtyfootersdude

  I have an xml file that I want to configure using a bash script. For example if I had this xml: <a> <b> <bb> <yyy> Bla </yyy> </bb> </b> <c> <cc> Something </cc> </c> <d> bla </d> </a> (confidential info removed) I would like to write a bash script that will remove section <b> (or comment it) but keep the rest of the xml intact. I am pretty new the the whole scripting thing. I was wondering if anyone could give me a hint as to what I should look into. I was thinking that sed could be used except sed is a line editor. I think it would be easy to remove the <b> tags however I am unsure if sed would be able to remove all the text between the <b> tags. I will also need to write a script to add back the deleted section.

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• Android customizing ViewFlipper...

  - by wearysamurai

  So I'm having pretty much exactly the problem described here: http://code.google.com/p/android/issues/detail?id=6191 and until the ViewFlipper issue in 2.1 and 2.2 has been resolved, I'm attempting to customize my own ViewFlipper in the manner described: @Override protected void onDetachedFromWindow() { try { super.onDetachedFromWindow(); } catch (IllegalArgumentException e) { // Call stopFlipping() in order to kick off updateRunning() stopFlipping(); } } But I've never done this sort of thing before and am hoping to get a little guidance (as my own efforts are coming up short). Here's what I have so far. FixedFlipper.java: import android.content.Context; import android.util.AttributeSet; import android.widget.ViewFlipper; public class FixedFlipper extends ViewFlipper{ public FixedFlipper(Context context){ super(context); } public FixedFlipper(Context context, AttributeSet attrs){ super(context, attrs); } @Override protected void onDetachedFromWindow(){ try{ super.onDetachedFromWindow(); }catch(Exception e){ super.stopFlipping(); } } } main.xml: <com.site.TestApp.FixedFlipper style="@style/body" android:id="@+id/flipper"> ... </com.site.TestApp.FixedFlipper> And in my activity, I invoke it like so: FixedFlipper flipper = (FixedFlipper)findViewById(R.id.flipper); It seems like it should be pretty straightforward, but I keep getting this: Binary XML file line #4: Error inflating class com.site.TestApp.FixedFlipper I appreciate any suggestions. I've been chasing my tail for hours trying to figure out what piece of the puzzle I'm missing.

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• Mercurial: a few questions all related to .hgignore

  - by WizardOfOdds

  I've been working for a long time with a .hgignore file that was fine and recently added one new type of files to ignore. When running "hg status", I noticed this: M .hgignore So Mercurial considers the .hgignore to be a file that needs to be tracked (if it's a the root of the project). Now I've read various docs but my points weren't specifically adressed so here are some very detailed questions which hopefully can help me figure this out (it would be great is someone answering could quote and address these three points [even with a simply yes/no answer for each question]): Should .hgignore be at the root of the project? (I guess it should, seen that a developer can potentially be working on several projects which would all have different .hgignore requirements) Can .hgignore be ignored be Mercurial? If it can be ignored, should .hgignore be ignored by Mercurial (which is different than the previous question) In the case where .hgignore should not be ignored, can't some really bad thing happens if you suddenly rollback way earlier, when a really old and incomplete .hgignore was used? I think I saw weird things happening with certain per-user IDE project files (I'm not saying all IDEs project files are per-user only, but some definitely are) that were supposed to be ignored, but then the user rolls back to an old version, where an old .hgignore gets used, and then suddenly files supposed to be ignored are committed because the old .hgignore didn't exclude these.

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• Blackberry: How to properly handle focus traversal in custom field?

  - by DaveJohnston

  I am writing an app for Blackberry and I have the following problem: I have implemented a custom field by extending the Manager class. The field is quite simple, it consists of a label and two check boxes, yes and no. The fields are laid out so that the label is on the left and uses as much space as it can while still allowing room for the check boxes which are positioned next to each other at the right and vertically centred compared to the label (if it spans more than one line). So it looks like this: This is a question? O Yes O No Everything is fine so far in terms of laying out the fields. But now I am trying to handle focus traversal. First of all the default behaviour when the user scrolls up or down is to move between the yes and no options. I want to move to the next field above or below when up or down is pressed, so I did this: protected int moveFocus(int amount, int status, int time) { if (status == 537001984 || status == -1610481664) { // Up or down was pressed // Don't move focus between yes and no when up or down is pressed. return amount; } return super.moveFocus(amount, status, time); } And that seems to work. The next thing I would like to do is to remember which option last had the focus when the field loses focus, then on gaining focus again (regardless of which direction the focus comes from) set this field to have the focus. I tried overriding onUnfocus and onFocus so that onUnfocus I note which field was focussed then onFocus setFocus to that field. But I get a StackOverflowError, I guess because the call to setFocus on a field within the manager actually calls onFocus for the manager itself again?? So does anyone know how I should be doing this? I checked the DateField and it has the exact behaviour I am looking for, i.e. it remembers if you were last on the day, month or year field and sets this field to focus when the field itself gets the focus.

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• C# UserControl Validation

  - by Barry

  Hi, I have a UserControl with a Tab Control containing three tabs. Within the tabs are multiple controls - Datetimepickers, textboxes, comboboxes. There is also a Save button which when clicked, calls this.ValidateChildren(ValidationConstraints.Enabled) Now, I click save and a geniune validation error occurs. I correct the error and then click save again - valdiation errors occur on comboboxes on a different tab. If I navigate to this tab and click save, everything works fine. How can this be? I haven't changed any values in the comboboxes so how can the fail validation then pass validation? The comboboxes are bound to a dataset with their selectedValue and Text set. I just don't understand what is happening here. This behaviour also occurs for some textboxes too. The validation rule is that they have to be a decimal - the default value is zero, which is allowed. The same thing happens, they fail validation the first time - I make no changes, click save again and they pass validation. If you need any further information please let me know thanks Barry

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• accelerating Wheel - psychtoolbox in matlab

  - by ariel

  Hi I am trying to write a code that will show an acceleration wheel. as long as the user press 'a' the wheel should accelerate counterclock wize. the thing is that it turn in the right direction but it doesn't accelerate. This is the code I am using . PTB-3 windows XP. img=imread('c:\images.jpg'); [yimg,ximg,z]=size(img); rot_spd = 1; larrow = KbName('a'); % modify this for Windows rarrow = KbName('b'); [w,rect]=Screen('OpenWindow',0,[0 0 0]); sx = 400; % desired x-size of image (pixels) sy = yimg*sx/ximg; % desired y-size--keep proportional t = Screen('MakeTexture',w,img); bdown=0; th = 0; % initial rotation angle (degrees) HideCursor while(~any(bdown)) % exit loop if mouse button is pressed [x,y,bdown]=GetMouse; [keyisdown,secs,keycode] = KbCheck; if(keycode(larrow)) th = th - rot_spd-1; % accelerate counterclockwise th end if(keycode(rarrow)) th = th + rot_spd+1; % accelerate clockwise th end destrect=[x-sx/2,y-sy/2,x+sx/2,y+sy/2]; Screen('DrawTexture',w,t,[],destrect,th); Screen('Flip',w); end Screen('Close',w) ShowCursor If anyone has an odea why it doesn't accelerate I'd appriciate it very much. Ariel

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• ASP.NET Sql Timeout

  - by Petoj

  Well we have this Asp.Net application that we installed at a customer but now some times we get a SqlException that says "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding." now the wired thing is that the exception comes instantly when i press the button, this does not happen every time i press the button so its random.. any idea what i could try to pinpoint the problem? We are using the EnterpriseLibrary Database block if that matters... Stack trace: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) at Microsoft.Practices.EnterpriseLibrary.Data.Database.DoExecuteReader(DbCommand command, CommandBehavior cmdBehavior) at Microsoft.Practices.EnterpriseLibrary.Data.Database.ExecuteReader(DbCommand command)

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• Exception during secure communication implementation

  - by Liran

  hi everyone. im trying to implement simple secured client server communiction using WCF. when im launching mt server everty thing is OK , But when im launching my client im getting this error: Error : An error occurred while making the HTTP request to https://localhost:800 0/ExchangeService. This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be caus ed by a mismatch of the security binding between the client and the server. this is the server code : Uri address = new Uri("https://localhost:8000/ExchangeService"); WSHttpBinding binding = new WSHttpBinding(); //Set Binding Params binding.Security.Mode = SecurityMode.Transport; binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.None; binding.Security.Transport.ProxyCredentialType = HttpProxyCredentialType.None; Type contract = typeof(ExchangeService.ServiceContract.ITradeService); ServiceHost host = new ServiceHost(typeof(TradeService)); host.AddServiceEndpoint(contract, binding, address); host.Open(); this is the client configuration (app.config): </client> <bindings> <wsHttpBinding> <binding name="TradeWsHttpBinding"> <security mode="Transport"> <transport clientCredentialType="None" proxyCredentialType ="None"/> </security> </binding> </wsHttpBinding> </bindings> the security configuration at both the client and the server are the same , and i dont need certificate for the server in that kind of security (transport) so why do i get this exception ???? thanks...

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• iPhone UIView frame animation inconsistent why?

  - by Rick

  I have an app that uses an image loaded in from an UIImagePickerController instance. Once the picker is dismissed so as to reduce the jarring transition from the picker layout to the layout of the next function I initially have the UIImageView for the image fill the whole screen and then when the picker is dismissed the image 'squeezes' up to the top left of the screen. from the initWithFrame... targetPicView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 480.0)]; [targetPicView setContentMode:UIViewContentModeScaleToFill]; this in a function called after dismissing the picker... [UIView beginAnimations:@"squeeze" context:context]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:0.75]; [targetPicView setFrame:CGRectMake(20.0, 20.0, 130.0, 150.0)]; [UIView commitAnimations]; The weird thing is that this works great when the image has been chosen from the library, the view shrinks down with the top left corner in place just as I planned but... If the image comes from the camera then the view shrinks with the top right corner in place instead and appears to come in from the left side of the screen. Can anyone shed any light on this?

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• Obtaining information about executable code from exe/pdb

  - by Miro Kropacek

  Hello, I need to extract code (but not data!) from classic win32 exe/dll files. It's clear I can't do this only with extraction of code segment content (because code segment contains also the data -- jump tables for example) and that I need some help from compiler. *.map files are nice but they only contain addresses of functions, i.e. the safest thing I can do is to start at that address and to process until the first return / jump instruction (because part of the function could be mentioned data) *.pdb files are better but I'm not sure what tools to use to extract information like this -- I took a look at DbgHelp and DIA SDK, the latter one seems to be the right tool but it doesn't look very simple. So my question/questions: To your knowledge, it is possible to extract information about code/data position (address + length) only via DbgHelp? If the DIA SDK is the only way, any idea what should I call for getting information like that? (that COM stuff is pretty heavy) Is there any other way? Of course my concern is about Visual Studio, C/C++ source compilation in the first place. Thanks for any hint.

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• ASP.NET MVC - Entending the Authorize Attribute

  - by Mad Halfling

  Hi folks, currently I use [Authorize(Roles = ".....")] to secure my controller actions on my ASP.NET MVC 1 app, and this works fine. However, certain search views need to have buttons that route to these actions that need to be enabled/disabled based on the record selected on the search list, and also the security privs of the user logged in. Therefore I think I need to have a class accessing a DB table which cross-references these target controller/actions with application roles to determine the state of these buttons. This will, obviously, make things messy as privs will need to be maintained in 2 places - in that class/DB table and also on the controller actions (plus, if I want to change the access to the action I will have to change the code and compile rather than just change a DB table entry). Ideally I would like to extend the [Authorize] functionality so that instead of having to specify the roles in the [Authorize] code, it will query the security class based on the user, controller and action and that will then return a boolean allowing or denying access. Are there any good articles on this - I can't imagine it's an unusual thing to want to do, but I seem to be struggling to find anything on how to do it (could be Monday-morning brain). I've started some code doing this, looking at article http://schotime.net/blog/index.php/2009/02/17/custom-authorization-with-aspnet-mvc/ , and it seems to be starting off ok but I can't find the "correct" way to get the calling controller and action values from the httpContext - I could possibly fudge a bit of code to extract them from the request url, but that doesn't seem right to me and I'd rather do it properly. Cheers MH

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• Efficiently Determine if EF 4 POCO Already in ObjectSet

  - by Eric J.

  I'm trying EF 4 with POCO's on a small project for the first time. In my Repository implementation, I want to provide a method AddOrUpdate that will add a passed-in POCO to the repository if it's new, else do nothing (as the updated POCO will be saved when SaveChanges is called). My first thought was to do this: public void AddOrUpdate(Poco p) { if (!Ctx.Pocos.Contains<Poco>(p)) { Ctx.Pocos.AddObject(p); } } However that results in a NotSupportedException as documented under Referencing Non-Scalar Variables Not Supported (bonus question: why would that not be supported?) Just removing the Contains part and always calling AddObject results in an InvalidStateException: An object with the same key already exists in the ObjectStateManager. The existing object is in the Unchanged state. An object can only be added to the ObjectStateManager again if it is in the added state. So clearly EF 4 knows somewhere that this is a duplicate based on the key. What's a clean, efficient way for the Repository to update Pocos for either a new or pre-existing object when AddOrUpdate is called so that the subsequent call to SaveChanges() will do the right thing? I did consider carrying an isNew flag on the object itself, but I'm trying to take persistence ignorance as far as practical.

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• IE8 developer tools missing some styles

  - by Craig Warren

  Hi, I'm having some problems with some CSS properties in IE8. I've tested my site in IE7, Chrome and Firefox and they work fine but IE8 is having some layout issues. I inspect the developer tool option on ie8 and I've noticed that some of the properties I set in CSS are being ignored by ie8. For example: #header { position: relative; padding: 20px; height: 100px; background:url(header.png); } In this header IE8 ignored the height property: If I inspect the element in developer tools it is missing that property and it's crushed into another line: background:url;HEIGHT: 100PX The same thing happens for floats too: #logon { float: left; text-align:right; width:20%; height: 40px; padding-left: 0px; padding-right:7px; border:0; margin:0; background: url(navgradient.gif); } This ignores the float value: background: url(navgradient.gif); FLOAT:left; What is happening here and how can I fix it?

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• Lost Update Anomaly in Sql Server Update Command

  - by Javed

  Hi, I am very much confused. I have a transaction in ReadCommitted Isolation level. Among other things I am also updating a counter value in it, something similar to below: Update tblCount set counter = counter + 1 My application is a desktop application and this transaction happens to occur quite frequently and concurrently. We recently noticed an error that sometimes the counter value doesn't get updated or is missed. We also insert one record on each counter update so we are sure that records have been inserted but somehow counter fails to update. This happens once in 2000 simulaneous transactions. I seriously doubt it is a lost update anomaly I am facing but if you look at the command above, it's just update the counter from its own value: if I have started a transaction and the transaction has reached this statement, it should have locked the row. This should not cause lost update, but it's happening somehow. Is the thing that this update command works in two parts? Like first it reads the counter value (during which it doesn't get the exclusive lock) and then writes the new calculated value (when it does get an exclusive lock)? Please help, I have got really confused.

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• noSQL/SQL/RoR: Trying to build scalable ratings table for the game

  - by alexeypro

  I am trying to solve complex thing (as it looks to me). I have next entities: PLAYER (few of them, with names like "John", "Peter", etc.). Each has unique ID. For simplicity let's think it's their name. GAME (few of them, say named "Hide and Seek", "Jump and Run", etc.). Same - each has unique ID. For simplicity of the case let it be it's name for now. SCORE (it's numeric). So, how it works. Each PLAYER can play in multiple GAMES. He gets some SCORE in every GAME. I need to build rating table -- and not one! Table #1: most played GAMES Table #2: best PLAYERS in all games (say the total SCORE in every GAME). Table #3: best PLAYERS per GAME (by SCORE in particularly that GAME). I could be build something straight right away, but that will not work. I will have more than 10,000 players; and 15 games, which will grow for sure. Score can be as low as 0, and as high as 1,000,000 (not sure if higher is possible at this moment) for player in the game. So I really need some relative data. Any suggestions? I am planning to do it with SQL, but may be just using it for key-value storage; anything -- any ideas are welcome. Thank you!

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• JavaScript To Clear Form Field On Submit Before Form Submission To Perl Script

  - by Russell C.

  We have a very long form that has a number of fields and 2 different submit buttons. When a user clicks the 1st submit button ("Photo Search") the form should POST and our script will do a search for matching photos based on what the user entered in the text input ("photo_search_text") next to the 1st submit button and reload the entire form with matching photos added to the form. Upon clicking the 2nd submit button ("Save Changes") at the end of the form, it should POST and our script should update the database with the information the user entered in the form. Unfortunately the layout of the form makes it impossible to separate it into 2 separate forms. I checked the entire form POST and unfortunately the submitted fields are identical to the perl script processing the form submission no matter which submit button is clicked so the perl script can't differentiate which action to perform based on which submit button is pushed. The only thing I can think of is to update the onclick action of the 2nd submit button so it clears the "photo_search_text" field before the form is submitted and then only perform a photo search if that fields has a value. Based on all this, my question is what does the JavaScript look that could clear out the "photo_search_text" field when someone clicks on the 2nd submit button? Here is what I've tried so far none of which has worked successfully: <input type="submit" name="submit" onclick="document.update-form.photo_search_text.value='';" value="Save Changes"> <input type="submit" name="submit" onsubmit="document.update-form.photo_search_text.value='';" value="Save Changes"> <input type="submit" name="submit" onclick="document.getElementById('photo_search_text')='';" value="Save Changes"> We also use JQuery on the site so if there is a way to do this with jQuery instead of plain JavaScript feel free to provide example code for that instead. Lastly, if there is another way to handle this that I'm not thinking of any and all suggestions would be welcome. Thanks in advance for your help!

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• Percent-Encoded Percent in URI

  - by Lukas

  In our application, it is possible for a user to upload files then download them later. We don't restrict them from having any special characters in the file name. The problem comes in when we create the link for the user to download the file. I use the Java URL encoder to encode the file name that gets put into the href of the link, but I'm still having problems with percent (%) signs. For example, if the user uploads a file named fi%le.jpg, the href that gets generated is fi%25le.jpg, and everything is fine. The problem is when the percent sign is right before the period (i.e., file%.jpg, which gets converted to file%25.jpg). When the user clicks on the link, they get a 404 (Not Found) error. The strange thing is that it is not a problem if the two characters following the percent sign are hex characters.... Weird, eh? Any help is appreciated. I am using Tomcat/Struts. Could the built-in URL decoder have anything to do with this problem?

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• Powershell / .Net: Get a reference to an object returned by a method

  - by Dan Menes

  I am teaching myself PowerShell by writing a simple parser. I use the .Net framework class Collections.Stack. I want to modify the object at the top of the stack in place. I know I can pop() the object off, modify it, and then push() it back on, but that strikes me as inelegant. First, I tried this: $stk = new-object Collections.Stack $stk.push( (,'My first value') ) ( $stk.peek() ) += ,'| My second value' Which threw an error: Assignment failed because [System.Collections.Stack] doesn't contain a settable property 'peek()'. At C:\Development\StackOverflow\PowerShell-Stacks\test.ps1:3 char:12 + ( $stk.peek <<<< () ) += ,'| My second value' + CategoryInfo : InvalidOperation: (peek:String) [], RuntimeException + FullyQualifiedErrorId : ParameterizedPropertyAssignmentFailed Next I tried this: $ary = $stk.peek() $ary += ,'| My second value' write-host "Array is: $ary" write-host "Stack top is: $($stk.peek())" Which prevented the error but still didn't do the right thing: Array is: My first value | My second value Stack top is: My first value Clearly, what is getting assigned to $ary is a copy of the object at the top of the stack, so when I the object in $ary, the object at the top of the stack remains unchanged. Finally, I read up on teh [ref] type, and tried this: $ary_ref = [ref]$stk.peek() $ary_ref.value += ,'| My second value' write-host "Referenced array is: $($ary_ref.value)" write-host "Stack top is still: $($stk.peek())" But still no dice: Referenced array is: My first value | My second value Stack top is still: My first value I assume the peek() method returns a reference to the actual object, not the clone. If so, then the reference appears to be being replaced by a clone by PowerShell's expression processing logic. Can somebody tell me if there is a way to do what I want to do? Or do I have to revert to pop() / modify / push()?

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• How can I convert this PHP script to Ruby? (build tree from tabbed string)

  - by Jon Sunrays

  I found this script below online, and I'm wondering how I can do the same thing with a Ruby on Rails setup. So, first off, I ran this command: rails g model Node node_id:integer title:string Given this set up, how can I make a tree from a tabbed string like the following? <?php // Make sure to have "Academia" be root node with nodeID of 1 $data = " Social sciences Anthropology Biological anthropology Forensic anthropology Gene-culture coevolution Human behavioral ecology Human evolution Medical anthropology Paleoanthropology Population genetics Primatology Anthropological linguistics Synchronic linguistics (or Descriptive linguistics) Diachronic linguistics (or Historical linguistics) Ethnolinguistics Sociolinguistics Cultural anthropology Anthropology of religion Economic anthropology Ethnography Ethnohistory Ethnology Ethnomusicology Folklore Mythology Political anthropology Psychological anthropology Archaeology ...(goes on for a long time) "; //echo "Checkpoint 2\n"; $lines = preg_split("/\n/", $data); $parentids = array(0 => null); $db = new PDO("host", 'username', 'pass'); $sql = 'INSERT INTO `TreeNode` SET ParentID = ?, Title = ?'; $stmt = $db->prepare($sql); foreach ($lines as $line) { if (!preg_match('/^([\s]*)(.*)$/', $line, $m)) { continue; } $spaces = strlen($m[1]); //$level = intval($spaces / 4); //assumes four spaces per indent $level = strlen($m[1]); // if data is tab indented $title = $m[2]; $parentid = ($level > 0 ? $parentids[$level - 1] : 1); //All "roots" are children of "Academia" which has an ID of "1"; $rv = $stmt->execute(array($parentid, $title)); $parentids[$level] = $db->lastInsertId(); echo "inserted $parentid - " . $parentid . " title: " . $title . "\n"; } ?>

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• Reading from serial port with Boost Asio?

  - by trikri

  Hi! I'm going to check for incoming messages (data packages) on the serial port, using Boost Asio. Each message will start with a header that is one byte long, and will specify which type of the message has been sent. Each different type of message has an own length. The function I'm about to write should check for new incoming messages continually, and when it finds one it should read it, and then some other function should parse it. I thought that the code might look something like this: void check_for_incoming_messages() { boost::asio::streambuf response; boost::system::error_code error; std::string s1, s2; if (boost::asio::read(port, response, boost::asio::transfer_at_least(0), error)) { s1 = streambuf_to_string(response); int msg_code = s1[0]; if (msg_code < 0 || msg_code >= NUM_MESSAGES) { // Handle error, invalid message header } if (boost::asio::read(port, response, boost::asio::transfer_at_least(message_lengths[msg_code]-s1.length()), error)) { s2 = streambuf_to_string(response); // Handle the content of s1 and s2 } else if (error != boost::asio::error::eof) { throw boost::system::system_error(error); } } else if (error != boost::asio::error::eof) { throw boost::system::system_error(error); } } Is boost::asio::streambuf is the right thing to use? And how do I extract the data from it so I can parse the message? I also want to know if I need to have a separate thread which only calls this function, so that it get called more often? Isn't there a risk for loosing data in between two calls to the function otherwise, because so much data comes in that it can't be stored in the serial ports memory? I'm using Qt as a widget toolkit and I don't really know how long time it needs to process all it's events.

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• Error CS0117: Namespace.A does not contain definition for Interface..

  - by SnOrfus

  I'm getting the error: 'Namespace.A' does not contain a definition for 'MyObjectInterface' and no extension method 'MyObjectInterface' accepting a first argument of type ... I've looked at this and this and neither seems to apply. The code looks like: public abstract class Base { public IObject MyObjectInterface { get; set; } } public class A : Base { /**/ } public class Implementation { public void Method() { Base obj = new A(); obj.MyObjectInterface = /* something */; // Error here } } IObject is defined in a separate assembly, but: IObject is in a separate assembly/namespace Base and A are in the same assembly/namespace each with correct using directives Implementation is in a third separate assembly namespace, also with correct using directives. Casting to A before trying to set MyObjectInterface doesn't work Specifically, I'm trying to set the value of MyObjectInterface to a mock object (though, I created a fake instead to no avail) I've tried everything I can think of. Please help before I lose more hair. edit I can't reproduce the error by creating a test app either, which is why I'm here and why I'm frustrated. @Reed Copsey: /* something */ is either an NUnit.DynamicMock(IMailer).MockInstance or a Fake object I created that inherits from IObject and just returns canned values. @Preet Sangha: I checked and no other assembly that is referenced has a definition for an IObject (specifically, it's called an IMailer). Thing is that intellisense picks up the Property, but when I compile, I get CS0117. I can even 'Go To Definition' in the implementation, and it takes me to where I defined it.

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• DateChooser is behaving strangly

  - by Tam

  Hi, I'm writing a Flex application and I came accross what I think is a weird problem. I want to create a text box and a DateChooser as the datefield didn't do what I wanted and it's Halo so I can't skin it easily. I want the DateChooser to show when I click on the text input. Here is except from my code: <s:TextInput id="wholeDate" width="100" mouseOver="stopChangeToNormal();" paddingRight="10" click="date1.visible = true" focusOut="date1.visible = false"/> <s:Button label="Go" width="70" /> </s:Panel> <mx:DateChooser id="date1" visible = "false" change="useDate(event);" mouseOver="changeToNormalState = false;" y="{wholeDate.y + buttonsGroup.y + 20}" x="{wholeDate.x + buttonsGroup.x - 175 }" /> The weird thing is that it work as I wanted if I make it visible = "true" to start but if I have it visible="false" it doesn't work! it shows by the date I select doesn't show in the box as it does if I have it as visible="true" but I don't want it to be visible initially. Any ideas? Thanks, Tam

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• UINavigationBar is getting buttons from another view

  - by Rafael Oliveira

  I have three Views, Splash, Login and List. From Splash I just wait and then Push Login View, with the Navigation Bar hidden. In Login I Show the NavigationBar, hide the BackButton1 and add a new RightButton1, then I check if Settings.bundle "login" and "pass" are set. If so, I push List View. Otherwise I stay in the Login view waiting for the user to fill the form and press a button. In List View I add a new RightButton2 and a new BackButton2. The problem is that if Settings.bundle data is not null, and in Login View I quickly push List View the RightButton1 appears in List View, or no buttons appear at all, or only BackButton2 doesn't appear... The most strange thing of all is that everything was OK and all of sudden it started to get messy. Login View: // Making the Navigation Bar Visible [self.navigationController setNavigationBarHidden:NO animated:NO]; // Hiding the Back Button in THIS view (Login) [self.navigationItem setHidesBackButton:YES]; // Inserting the Logout Button for the Next View (List) UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Logout" style:UIBarButtonItemStylePlain target:nil action:nil]; self.navigationItem.backBarButtonItem = backButton; [backButton release]; UIBarButtonItem* newAccountButton = [[UIBarButtonItem alloc] initWithTitle:@"New Account" style:UIBarButtonItemStylePlain target:self action:@selector(newAccountButtonPressed)]; self.navigationItem.rightBarButtonItem = newAccountButton; [newAccountButton release]; List View // Making the Navigation Bar Visible [self.navigationController setNavigationBarHidden:NO animated:NO]; UIBarButtonItem* aboutButton = [[UIBarButtonItem alloc] initWithTitle:@"About" style:UIBarButtonItemStylePlain target:self action:@selector(aboutButtonPressed)]; self.navigationItem.rightBarButtonItem = aboutButton; [aboutButton release]; Any ideas ?

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• Strategies for Accessing a Application with a COM API From PHP

  - by Alan Storm

  Background: Experienced PHP developer with a mostly *nix background. I'm writing a PHP application that needs to interact with a proprietary 3rd party system. The 3rd party system is Windows only. The PHP application will be living on a separate Linux based system The 3rd party application has been described as having a "COM API" that I'll need to talk to from the PHP application. What does this look like architecturally speaking? I'm starting with the COM section of the PHP manual, but I have specific questions. Specific Questions: Can I talk directly to a COM API from a PHP application running on another server? If so, how? (what PHP extensions would I need, or what protocols/PHP functions would I be using to talk to the API) If the answer to number 2 is no, I'd assume I'd need some kind of application on the Windows machine that can talk to COM, and then a service on the windows machine I can hit with PHP. Are there prebuilt frameworks for this kind of thing? Is this all nonsense and/or did I say something exceedingly stupid? (Quite possible, as I'm a little fuzzy on what "COM" does and doesn't cover) I'm obviously not looking for a full solution here, I'm just trying to get a general idea of what is and isn't possible and what kind of things I'll want to Google for. Thanks!

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• Starting CLI application programmatically does not work depending on arguments

  - by Daniel Beck

  I try to start plink.exe (PuTTY Link, the command line utility/version of PuTTY) from a C# application to establish an SSH reverse tunnel, but it does no longer work as soon as I pass the correct parameters. What does that mean? The following works as expected: it opens a command line window, displays that I forgot to pass the password for the -pw argument quits, and shows the prompt. I know it got the arguments, since it specifically requests the one thing I did not provide. Uri uri = omitted; ProcessStartInfo info = new ProcessStartInfo(); info.FileName = "cmd"; info.Arguments = "/k \"C:\\Program Files (x86)\\PuTTY\\plink.exe\" -R 3389:" + uri.Host + ":" + uri.Port + " -N -l username -pw"; // TODO pwd Process p = Process.Start(info); I tried the same think with calling plink.exe directly instead of cmd.exe /k, but the window closes immediately, which is unfortunate for bug-hunting. BUT when I pass a password in the arguments, plink.exe displays the program help (showing available parameters) and quits: Uri uri = omitted; ProcessStartInfo info = new ProcessStartInfo(); info.FileName = "cmd"; info.Arguments = "/k \"C:\\Program Files (x86)\\PuTTY\\plink.exe\" -R 3389:" + uri.Host + ":" + uri.Port + " -N -l username -pw secretpassword"; Process p = Process.Start(info); No indication of missing parameters. Both the cmd /k and plink.exe variants do not work (the latter closes immediately, so no information regarding different behaviour). When I launch the application from the Windows 7 Start Menu launcher with the identical parameters, it opens a cmd.exe window and establishes the connection as requested. What's wrong? Is there a way plink.exe notices it's not running in a real shell? If yes, how can I circumvent it, like the Start Menu "prompt" does? I hope this question is right on SO, since it, though specifically for a single application, revolves around launching it successfully programmatically.

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