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• Problem with accessing variables/functions from subclass Objective C

  - by Mitul Ruparelia

  Hi, I am having a problem with accessing public variable 'activity', which is a UIActivityIndicatorView type, see class declaration below in QuickStartViewController.h: @interface QuickStartViewController : UIViewController <ABPeoplePickerNavigationControllerDelegate> { @public IBOutlet UIActivityIndicatorView *activity; } @property (nonatomic, retain) UIActivityIndicatorView *activity; @end The function is called from another class: #import "QuickStartViewController.h" @interface NumberValidator : QuickStartViewController.... See below: - (void)connectionDidFinishLoading:(NSURLConnection *)connection { [activity startAnimating]; NSLog(@"This function is called, but [activity startAnimating] still doesn't work..."); } Note: [activity startAnimating] works fine when called within the QuickStartViewController class Do you have any suggestions as to why [activity startAnimating] is not working?

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• System.DirectoryServices.AccountManagement functions fail to probe some machines (but not others)

  - by JCCyC

  Both the working and failing targets are machines in the same domain. Code is down below. When I use it against some machines in my domain, I get a System.DirectoryServices.AccountManagement.PrincipalOperationException with a message: "While trying to retrieve the authorization groups, an error (1332) occurred." The error is thrown by GetAuthorizationGroups(). Note: The username I use to connect is a local admin to the machine in both cases. PrincipalContext ctx = new PrincipalContext(ContextType.Machine, machineName, domainname + "\\" + adminusername, pass); List<Principal> retList = new List<Principal>(); using (var user = UserPrincipal.FindByIdentity(ctx, probedusername)) { if (user != null) { PrincipalSearchResult<Principal> groups = user.GetAuthorizationGroups(); foreach (Principal group in groups) { retList.Add(group); } } }

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• making graph/map of functions/methods calls in c# code (visual studio 2008)

  - by Y. Shoham

  I have some c# projects in visual studio 2008, and I want to get graph (map? table?) of all methods calls. I want it static, not runtime (like "call stack"); any function - who calls it, and how many times, etc. I can Find All References method after method, and copy each call to table or Graphviz file, but it will take few hours. Is there an automatic tool or plugin that can help?

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• Using PInvoke vs .NET provided functions

  - by Jonathan Shepherd

  From version to version of .NET the more function that's equal to P/Invoke is added to .NET Now there are 2 questions in my mine. 1) Which one is prefer other the other in term of speed, normally I use .Net function but in tight loop I don't really know which one is going to be faster. 2) Is there any website that provide the list of counter-parts?

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• Matplotlib pick event order for overlapping artists

  - by Ajean

  I'm hitting a very strange issue with matplotlib pick events. I have two artists that are both pickable and are non-overlapping to begin with ("holes" and "pegs"). When I pick one of them, during the event handling I move the other one to where I just clicked (moving a "peg" into the "hole"). Then, without doing anything else, a pick event from the moved artist (the peg) is generated even though it wasn't there when the first event was generated. My only explanation for it is that somehow the event manager is still moving through artist layers when the event is processed, and therefore hits the second artist after it is moved under the cursor. So then my question is - how do pick events (or any events for that matter) iterate through overlapping artists on the canvas, and is there a way to control it? I think I would get my desired behavior if it moved from the top down always (rather than bottom up or randomly). I haven't been able to find sufficient enough documentation, and a lengthy search on SO has not revealed this exact issue. Below is a working example that illustrates the problem, with PathCollections from scatter as pegs and holes: import matplotlib.pyplot as plt import sys class peg_tester(): def __init__(self): self.fig = plt.figure(figsize=(3,1)) self.ax = self.fig.add_axes([0,0,1,1]) self.ax.set_xlim([-0.5,2.5]) self.ax.set_ylim([-0.25,0.25]) self.ax.text(-0.4, 0.15, 'One click on the hole, and I get 2 events not 1', fontsize=8) self.holes = self.ax.scatter([1], [0], color='black', picker=0) self.pegs = self.ax.scatter([0], [0], s=100, facecolor='#dd8800', edgecolor='black', picker=0) self.fig.canvas.mpl_connect('pick_event', self.handler) plt.show() def handler(self, event): if event.artist is self.holes: # If I get a hole event, then move a peg (to that hole) ... # but then I get a peg event also with no extra clicks! offs = self.pegs.get_offsets() offs[0,:] = [1,0] # Moves left peg to the middle self.pegs.set_offsets(offs) self.fig.canvas.draw() print 'picked a hole, moving left peg to center' elif event.artist is self.pegs: print 'picked a peg' sys.stdout.flush() # Necessary when in ipython qtconsole if __name__ == "__main__": pt = peg_tester() I have tried setting the zorder to make the pegs always above the holes, but that doesn't change how the pick events are generated, and particularly this funny phantom event.

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• Joomla "online-order" component for Joomla

  - by mIRU

  Hello Word :) Somebody can help me in finding an "online - ordering" component for joomla . That can contain the following function : Possibility of creating Form with pages like RS!Form Uploading Files Supporting Payment Gateways like PayPal , MasterCard , WebMoney , YandexMoney ,Money Bookers , Google Checkout ... more ) Saving data in database. A friendly control panel where admin can check statistics , income and expenditure, including offline transactions, and report on the data . A good example , for what I'm looking , is this component http://www.nbill.co.uk/ , but is to expensive and complicated . I'll be happy fore some links or advices :) . Thank a Lot ! for all who are trying to help me ! And sorry for my bad English :-)

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• Dijkstra’s algorithm and functions

  - by baris_a

  Hi guys, the question is: suppose I have an input function like sin(2-cos(3*A/B)^2.5)+0.756*(C*D+3-B) specified with a BNF, I will parse input using recursive descent algorithm, and then how can I use or change Dijkstra’s algorithm to handle this given function? After parsing this input function, I need to execute it with variable inputs, where Dijkstra’s algorithm should do the work. Thanks in advance. EDIT: May be I should ask also: What is the best practice or data structure to represent given function?

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• C# LINQ Oracle date Functions

  - by user1079925

  I am trying to generate a sql statement to be used in Oracle11g, using linq. The problem arises when using dates: The SQL generated by linq gives SELECT * FROM <table> WHERE start_date > '24/11/2012 00:00:00' and end_date < '28/11/2012 00:00:00' This causes an oracle error: ORA-01830 - date format picture ends before converting entire input string Adding TO_DATE to the query fixes the ORA-01830, as it is converting the string to a oracle date whilst now knowing the date format. SELECT * FROM <table> WHERE start_date > TO_DATE('24/11/2012 00:00:00','DD/MM/YYYY HH24:MI:SS') and end_date < TO_DATE('28/11/2012 00:00:00','DD/MM/YYYY HH24:MI:SS') So, is there a way to add TO_DATE to LINQ (for oracle)? If not, please tell me how to work around this issue. Thanks

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• callback execution order in jQuery getJSON

  - by lau

  I'm trying to implement a iGoogle like dashboard interface using widgets that get their content from other sites using JSONP calls. The problem is that if the first widget that calls the "$.ajax" takes 8 seconds to get the content back, it seems that the callbacks of the other widgets will only be called after the callback of the first widget gets executed. For the user experience, it would be better if the widgets could be displayed as soon as they get the content back from the remote sites, and not wait for those that were scheduled before to complete. Is there a way I can do that?

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• Cannot add Authorization field to HttpsUrlConnection in order to complete Basic authentication

  - by ES

  Hi, I'm using the Sun API HttpsURLConnection class, and have been trying for a day now to get it to send a simple request: URL url = new URL("https://thirdpartyserver.com/somelocation"); connection = (HttpsURLConnection)url.openConnection(); connection.setDoOutput(true); connection.setRequestMethod("POST"); if (doAuthorization) { Base64Converter converter = new Base64Converter(); connection.setRequestProperty("Authorization", "Basic " + converter.encode("username:password")); } OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream()); writer.write("param1=100&param2=hello"); writer.flush(); writer.close(); I keep getting 401 from the third part server. When I look at the connection through the debugger, the method shows up as GET even though I set it to POST; the collection of request properties shows up as null. If I print the values out, the method shows up as POST, but the request parameters collection is still empty. I would love to be able to print the request and understand what's going on, but I could not figure out how to print the content of an output buffer. Any ideas? Thanks! ES

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• iTextSharp - Bug in the table functions?

  - by Matthias

  Hello all together, I try to make a table like this: PdfPTable Table = new PdfPTable(6); PdfPCell Cell = new PdfPCell(new Phrase("a", Font1)); Cell.Rowspan = 2; Cell.Colspan = 2; Table.AddCell(Cell); Cell = new PdfPCell(new Phrase("b", Font1)); Cell.Rowspan = 2; Cell.Colspan = 2; Table.AddCell(Cell); Cell = new PdfPCell(new Phrase("c", Font1)); Cell.Colspan = 2; Table.AddCell(Cell); Cell = new PdfPCell(new Phrase("d", Font1)); Cell.Colspan = 2; Table.AddCell(Cell); That works fine. But changing the number of columns will destory the table. Is it a bug or do I make something wrong? This code destroys the table: PdfPTable Table = new PdfPTable(17); PdfPCell Cell = new PdfPCell(new Phrase("a", Font1)); Cell.Rowspan = 2; Cell.Colspan = 2; Table.AddCell(Cell); Cell = new PdfPCell(new Phrase("b", Font1)); Cell.Rowspan = 2; Cell.Colspan = 10; Table.AddCell(Cell); Cell = new PdfPCell(new Phrase("c", Font1)); Cell.Colspan = 5; Table.AddCell(Cell); Cell = new PdfPCell(new Phrase("d", Font1)); Cell.Colspan = 5; Table.AddCell(Cell); Edit: The table should have this layout: |-------------------------------------------------------| | Cell "a" with | Cell "b" with | Cell "c", colspan = 5 | | colspan = 2 | colspan = 10 |-----------------------| | rowspan = 2 | rowspan = 2 | Cell "d", colspan = 5 | |-------------------------------------------------------| Best regards, Matthias

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• JS: variable inheritance in anonymous functions - scope

  - by tkSimon

  hey guys, someone from doctype sent me here. long story short: var o="before"; x = function() //this needs to be an anonymous function { alert(o); //the variable "o" is from the parent scope }; o="after"; //this chages "o" in the anonymous function x(); //this results in in alert("after"); //which is not the way i want/need it in reality my code is somewhat more complex. my script iterates through many html objects and adds an event listener each element. i do this by declaring an anonymous function for each element and call another function with an ID as argument. that ID is represented by the "o"-variable in this example. after some thinking i understand why it is the way it is, but is there a way to get js to evaluate o as i declare the anonymous function without dealing with the id attribute and fetching my ID from there? my full source code is here: http://pastebin.com/GMieerdw the anonymous function is on line 303

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• Access $('selector').data in functions/objects

  - by John

  How do I access values set by $.data() inside a function or object $('#timers').data('firsttimer', 100); //prints 100 document.write($('#timers').data('firsttimer')); function blah(){ //Prints nothing document.write($('#timers').data('firsttimer')); } blah(); See this jsfiddle for easy access to test the code http://jsfiddle.net/JUfd8/

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• Fix common library functions, or abandon then?

  - by Ian Boyd

  Imagine i have a function with a bug in it: Boolean MakeLocation(String City, String State) { //Given "Springfield", "MO" //return "Springfield, MO" return City+", "+State; } So the call: MakeLocation("Springfield", "MO"); would return "Springfield, MO" Now there's a slight problem, what if the user called: MakeLocation("Springfield, MO", "OH"); The called it wrong, obviously. But the function would return "Springfield, MO, OH". The system was functioning like this for many years, until i noticed the function being used wrong, and i corrected it. And i also updated the original function to catch such an obvious mistake - in case it's happening elsewhere: Boolean MakeLocation(String City, String State) { //Given "Springfield", "MO" //return "Springfield, MO" if (City.Contains, ",") throw new EMakeLocationException("City name contains a comma. You probably didn't mean that"); return City+", "+State; } And testing showed the problem fixed. Except we missed an edge case, and the customer found it. So now the moral dillema. Do you ever add new sanity checks, safety checks, assertions to exising code? Or do you call the old function abandoned, and have a new one: Boolean MakeLocation(String City, String State) { //Given "Springfield", "MO" //return "Springfield, MO" return City+", "+State; } Boolean MakeLocation2(String City, String State) { //Given "Springfield", "MO" //return "Springfield, MO" if (City.Contains, ",") throw new EMakeLocationException("City name contains a comma. You probably didn't mean that"); return City+", "+State; } The same can apply for anything: Question FetchQuestion(Int id) { if (id == 0) throw new EFetchQuestionException("No question ID specified"); ... } Do you risk breaking existing code, at the expense of existing code being wrong?

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• GDB Not Skipping Functions without Debug Info

  - by Alan Lue

  I compiled GDB 7 on a Mac OS X Leopard system. When stepping through a C program, GDB fails to step through 'printf()' statements, which probably don't have associated debug information, and starts printing "Cannot find bounds of current function." Here's some output: $ /usr/local/bin/gdb try1 GNU gdb (GDB) 7.1 Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-apple-darwin10". (gdb) list 1 #include <stdio.h> 2 static void display(int i, int *ptr); 3 4 int main(void) { 5 int x = 5; 6 int *xptr = &x; 7 printf("In main():\n"); 8 printf(" x is %d and is stored at %p.\n", x, &x); 9 printf(" xptr holds %p and points to %d.\n", xptr, *xptr); 10 display(x, xptr); (gdb) b 6 Breakpoint 1 at 0x1e8e: file try1.c, line 6. (gdb) r Starting program: /tmp/try1 Breakpoint 1, main () at try1.c:6 6 int *xptr = &x; (gdb) n 7 printf("In main():\n"); (gdb) n 0x0000300a in ?? () (gdb) n Cannot find bounds of current function (gdb) n Cannot find bounds of current function Any idea what's going on? Alan

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• MySql order by problem

  - by Sergio

  Hello. I want to list messages that received specific user from other users group by ID's and ordered by last message received. If I use this query: SELECT MAX(id), fromid, toid, message FROM pro_messages WHERE toid=00003 GROUP BY fromid I do not get last message sent from user "fromid" to user "toid" but the first message sent. Can I do that in some other way or I need to do it with two queries or join tables? id - message id fromid - id of user who sent message toid - id of user who receive message (in this case user 00003)

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• Can you access registers from python functions in vim

  - by Michael Anderson

  It seems vims python sripting is designed to edit buffer and files rather than work nicely with vims registers. You can use some of the vim packages commands to get access to the registers but its not pretty. My solution for creating a vim function using python that uses a register is something like this. function printUnnamedRegister() python >> EOF print vim.eval('@@') EOF Setting registers may also be possible using something like function setUnnamedRegsiter() python >> EOF s = "Some \"crazy\" string\nwith interesting characters" vim.command('let @@="%s"' % myescapefn(s) ) EOF However this feels a bit cumbersome and I'm not sure exactly what myescapefn should be. So I've never been able to get the setting version to work properly. So if there's a way to do something more like function printUnnamedRegister() python >> EOF print vim.getRegister('@') EOF function setUnnamedRegsiter() python >> EOF s = "Some \"crazy\" string\nwith interesting characters" vim.setRegister('@',s) EOF Or even a nice version of myescapefn I could use then that would be very handy.

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• Create a custom worksheet function in Excel VBA

  - by Tomalak

  I have a faint memory of being able to use VBA functions to calculate values in Excel, like this (as the cell formula): =MyCustomFunction(A3) Can this be done? EDIT: This is my VBA function signature: Public Function MyCustomFunction(str As String) As String The function sits in the ThisWorkbook module. If I try to use it in the worksheet as shown above, I get the #NAME? error. Solution (Thanks, codeape): The function is not accessible when it is defined ThisWorkbook module. It must be in a "proper" module, one that has been added manually to the workbook.

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• Using bindings to control column order in a DataGrid

  - by DanM

  Problem I have a WPF Toolkit DataGrid, and I'd like to be able to switch among several preset column orders. This is an MVVM project, so the column orders are stored in a ViewModel. The problem is, I can't get bindings to work for the DisplayIndex property. No matter what I try, including the sweet method in this Josh Smith tutorial, I get: The DisplayIndex for the DataGridColumn with Header 'ID' is out of range. DisplayIndex must be greater than or equal to 0 and less than Columns.Count. Parameter name: displayIndex. Actual value was -1. Is there any workaround for this? I'm including my test code below. Please let me know if you see any problems with it. ViewModel code public class MainViewModel { public List<Plan> Plans { get; set; } public int IdDisplayIndex { get; set; } public int NameDisplayIndex { get; set; } public int DescriptionDisplayIndex { get; set; } public MainViewModel() { Initialize(); } private void Initialize() { IdDisplayIndex = 1; NameDisplayIndex = 2; DescriptionDisplayIndex = 0; Plans = new List<Plan> { new Plan { Id = 1, Name = "Primary", Description = "Likely to work." }, new Plan { Id = 2, Name = "Plan B", Description = "Backup plan." }, new Plan { Id = 3, Name = "Plan C", Description = "Last resort." } }; } } Plan Class public class Plan { public int Id { get; set; } public string Name { get; set; } public string Description { get; set; } } Window code - this uses Josh Smith's DataContextSpy <Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:WpfApplication1" xmlns:mwc="http://schemas.microsoft.com/wpf/2008/toolkit" Title="Main Window" Height="300" Width="300"> <Grid> <mwc:DataGrid ItemsSource="{Binding Plans}" AutoGenerateColumns="False"> <mwc:DataGrid.Resources> <local:DataContextSpy x:Key="spy" /> </mwc:DataGrid.Resources> <mwc:DataGrid.Columns> <mwc:DataGridTextColumn Header="ID" Binding="{Binding Id}" DisplayIndex="{Binding Source={StaticResource spy}, Path=DataContext.IdDisplayIndex}" /> <mwc:DataGridTextColumn Header="Name" Binding="{Binding Name}" DisplayIndex="{Binding Source={StaticResource spy}, Path=DataContext.NameDisplayIndex}" /> <mwc:DataGridTextColumn Header="Description" Binding="{Binding Description}" DisplayIndex="{Binding Source={StaticResource spy}, Path=DataContext.DescriptionDisplayIndex}" /> </mwc:DataGrid.Columns> </mwc:DataGrid> </Grid> </Window> Note: If I just use plain numbers for DisplayIndex, everything works fine, so the problem is definitely with the bindings. Update 5/1/2010 I was just doing a little maintenance on my project, and I noticed that when I ran it, the problem I discuss in this post had returned. I knew that it worked last time I ran it, so I eventually narrowed the problem down to the fact that I had installed a newer version of the WPF Toolkit (Feb '10). When I reverted to the June '09 version, everything worked fine again. So, I'm now doing something I should have done in this first place: I'm including the WPFToolkit.dll that works in my solution folder and checking it into version control. It's unfortunate, though, that the newer toolkit has a breaking change.

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• firefox, jQuery ajax calls firing twice and never triggering success or error functions

  - by Adrian Adkison

  Hi, I am developing with the .NET framework, using jQuery 1.4.2 client side. When developing in Firefox version 3.6, every so often an one of the many ajax calls I make on the page will fire twice, the second will return successfully but will not trigger the success handler of the ajax call and the first never returns anything. So basically the data is all sent to the server and response is sent down but nothing happens with the response. Here is an example of the call I am making. It happens to any of the ajax calls, so there is not one particular that is causing the problem: $.ajax({ type:"POST", contentType : "application/json; charset=utf-8", data:"{}", dataType:"json", success:function(){ alert('success'); }, error:function(){ alert('error'); }, url:'/services.aspx/somemethod' }); }) From firebug, here are the headers of the first call which in firebug shows as never completely responding, meaning i see no response code and the loader gif in the firebug never goes away. Note:In firebug it usually says Response Header but for the first call this space is blank Server ASP.NET Development Server/9.0.0.0 X-AspNet-Version 2.0.50727 Content-Type application/json; charset=utf-8 Connection Close Request Headers Host mydomain.com User-Agent Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401Firefox/3.6.3 ( .NET CLR 3.5.30729) Accept application/json, text/javascript, */* Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 115 Connection keep-alive Content-Type application/json; charset=utf-8 X-Requested-With XMLHttpRequest Referer http://mydomain.com/mypage.aspx Here is the header from the second request which just appear to complete in firebug (i.e response is 200): Response Header Server ASP.NET Development Server/9.0.0.0 X-AspNet-Version 2.0.50727 Content-Type application/json; charset=utf-8 Connection Close Request Headers Host mydomain.com User-Agent Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( .NET CLR 3.5.30729) Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 115 Connection keep-alive Content-Type application/json; charset=utf-8 Referer http://mydomain.com/mypage.aspx To summarize my question, why are two requests being made and why are neither of them triggering a success or error handler in the ajax call. I have seen this article about firefox 3.5+ and preflighted requests https://developer.mozilla.org/En/HTTP_access_control#Preflighted_requests In the article is says if a "POST" is made with any other content type than "application/x-www-form-urlencoded, multipart/form-data, or text/plain" than the request is pre-flighted. If this is the case, this should happen to all of my calls. Thanks

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• Lisp Style question label local functions or not?

  - by Andrew Myers

  I was wondering if there is a standard practice regarding the use of labels in Lisp. I've been messing around with a Lisp implementation of the algorithm described in the first answer here http://stackoverflow.com/questions/352203/generating-permutations-lazily My current version uses labels to break out portions of functionality. (defun next-permutation (pmute) (declare (vector pmute)) (let ((len (length pmute))) (if (> len 2) (labels ((get-pivot () (do ((pivot (1- len) (1- pivot))) ((or (= pivot 0) (< (aref pmute (1- pivot)) (aref pmute pivot))) pivot))) (get-swap (pivot) (let ((swp (1- len))) (loop for i from (1- len) downto pivot do (if (or (and (> (aref pmute i) (aref pmute (1- pivot))) (< (aref pmute i) (aref pmute swp))) (< (aref pmute swp) (aref pmute (1- pivot)))) (setf swp i))) swp)) (next (swp pivot) (rotatef (aref pmute (1- pivot)) (aref pmute swp)) (reverse-vector pmute pivot (1- len)))) (let ((piv (get-pivot))) (if (> piv 0) (next (get-swap piv) piv) nil)))))) Since each label is only called once I was wondering if this is considered bad practice since the only reason to do it in this case is for aesthetic reasons. I would argue that the current version with labels is clearer but that may go against common wisdom that I'm not aware of, being new to Lisp.

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• Callbacks in Thrift Asynchronous Functions?

  - by Roberto Aloi

  Hi all, In Thrift it is possible to use the oneway modifier to specify a call as asynchronous. Apparently, it's not possible to define a callback, though, to be executed when the execution of the function is completed. It seems that the only possibility I have is to give my Thrift client (PHP) some "server" capabilities, so that, when the heavy computation is completed on the server side, I can send a notification to it. This means that I should have a new .thrift file, with new definitions, new services and all the rest and that I should generate php-server side code with Thrift. Even if this is feasible, it looks like an overkill to me and I'm wondering if there's a more clever way to implement the callback. Looking forward for some feedback from you, guys.

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

  - by Lauren

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

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• Google's 'go' and scope/functions

  - by danwoods

  In one of the example servers given at golang.org: package main import ( "flag" "http" "io" "log" "template" ) var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18 var fmap = template.FormatterMap{ "html": template.HTMLFormatter, "url+html": UrlHtmlFormatter, } var templ = template.MustParse(templateStr, fmap) func main() { flag.Parse() http.Handle("/", http.HandlerFunc(QR)) err := http.ListenAndServe(*addr, nil) if err != nil { log.Exit("ListenAndServe:", err) } } func QR(c *http.Conn, req *http.Request) { templ.Execute(req.FormValue("s"), c) } func UrlHtmlFormatter(w io.Writer, v interface{}, fmt string) { template.HTMLEscape(w, []byte(http.URLEscape(v.(string)))) } const templateStr = ` <html> <head> <title>QR Link Generator</title> </head> <body> {.section @} <img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF- 8&chl={@|url+html}" /> <br> {@|html} <br> <br> {.end} <form action="/" name=f method="GET"><input maxLength=1024 size=70 name=s value="" title="Text to QR Encode"><input type=submit value="Show QR" name=qr> </form> </body> </html> ` Why is template.HTMLEscape(w, []byte(http.URLEscape(v.(string)))) contained within UrlHtmlFormatter? Why can't it be directly linked to "url+html"?

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• custom listview adapter getView method being called multiple times, and in no coherent order

  - by edzillion

  I have a custom list adapter: class ResultsListAdapter extends ArrayAdapter<RecordItem> { in the overridden 'getView' method I do a print to check what position is and whether it is a convertView or not: @Override public View getView(int position, View convertView, ViewGroup parent) { System.out.println("getView " + position + " " + convertView); The output of this (when the list is first displayed, no user input as yet) 04-11 16:24:05.860: INFO/System.out(681): getView 0 null 04-11 16:24:29.020: INFO/System.out(681): getView 1 android.widget.RelativeLayout@43d415d8 04-11 16:25:48.070: INFO/System.out(681): getView 2 android.widget.RelativeLayout@43d415d8 04-11 16:25:49.110: INFO/System.out(681): getView 3 android.widget.RelativeLayout@43d415d8 04-11 16:25:49.710: INFO/System.out(681): getView 0 android.widget.RelativeLayout@43d415d8 04-11 16:25:50.251: INFO/System.out(681): getView 1 null 04-11 16:26:01.300: INFO/System.out(681): getView 2 null 04-11 16:26:02.020: INFO/System.out(681): getView 3 null 04-11 16:28:28.091: INFO/System.out(681): getView 0 null 04-11 16:37:46.180: INFO/System.out(681): getView 1 android.widget.RelativeLayout@43cff8f0 04-11 16:37:47.091: INFO/System.out(681): getView 2 android.widget.RelativeLayout@43cff8f0 04-11 16:37:47.730: INFO/System.out(681): getView 3 android.widget.RelativeLayout@43cff8f0 AFAIK, though I couldn't find it stated explicitly, getView() is only called for visible rows. Since my app starts with four visible rows at least the position numbers cycling from 0-3 makes sense. But the rest is a mess: Why is getview called for each row four times? Where are these convertViews coming from when I haven't scrolled yet? I did a bit of reseach, and without getting a good answer, I did notice that people were associating this issue with layout issues. So in case, here's the layout that contains the list: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="fill_parent" android:layout_width="fill_parent" android:orientation="vertical" > <TextView android:id="@+id/pageDetails" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:drawSelectorOnTop="false" /> </LinearLayout> and the layout of each individual row: <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="108dp" android:padding="4dp"> <ImageView android:id="@+id/thumb" android:layout_width="120dp" android:layout_height="fill_parent" android:layout_alignParentTop="true" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:layout_marginRight="8dp" android:src="@drawable/loading" /> <TextView android:id="@+id/price" android:layout_width="wrap_content" android:layout_height="18dp" android:layout_toRightOf="@id/thumb" android:layout_alignParentBottom="true" android:singleLine="true" /> <TextView android:id="@+id/date" android:layout_width="wrap_content" android:layout_height="18dp" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:paddingRight="4dp" android:singleLine="true" /> <TextView android:id="@+id/title" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="17dp" android:layout_toRightOf="@id/thumb" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:paddingRight="4dp" android:layout_alignWithParentIfMissing="true" android:gravity="center" /> Thank you for your time

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