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• in app purchases question

  - by bdt

  I am looking into the iPhone in app purchased models and need to implement a subscription. Ex content will be available for 24 hours. Now the most important thing is that it needs to be available on all the other devices, so bought on the iPhone, viewable on the iPad. I'm not sure how this works ? I need to store some information on the developer server but is this the transaction id and current date/time so when launching the app on the iPad, you will attempt to buy the content again. Apple will see that this user already bought that and hopefully returns the transaction ID. At that moment I can verify if the time limit it still valid or not. Can anyone confirm this method off working? If this is correct is there a 'renew'?

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• Can I combine values from multiple rows in another table into multiple columns of one row using SQL?

  - by Jordi

  I have two tables: T1: | M_ID | P_ID1 | P_ID2 | rest of T1 columns | | 0 | 0 | 1 | ... | | 1 | 2 | 3 | ... | T2: | P_ID | Type | A | B | | 0 | 1 | a | e | | 1 | 2 | b | f | | 2 | 1 | c | g | | 3 | 2 | d | h | Now, I want to have a query that selects this: | M_ID | P_1a | P_1b | P_2a | P_2b | rest of T1 columns | | 0 | a | e | b | f | ... | | 1 | c | g | c | h | ... | So, in words: I want to select all columns from T1, but I want to replace P_ID1 with the columns from T2, where the P_ID is equal to P_ID1, and the type is 1, and basically the same for P_ID2. I can obviously get the information I need with multiple queries, but I was wondering if there is a way that I can do this with one query. Any ideas? I'm currently using SQL Server 2008r2, but I'd also be interested in solutions for other database software. Thanks for the help!

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• Start thread with two parameters

  - by Matt

  I've got a method that gets called on an event, which presents me with two variables varA, varB (both strings). This method gets called with new information quite frequently, thus I have created a separate method that takes in the two parameters. I want to run this method in a thread, however have struck the issue that Thread.Start will not accept parameters. I've tried a few supposed methods, but have so far had no luck.. I think my best bet is to create a separate class, and handle it there.. However I have a List which I am inserting data into, and hit a dead end when the separate class tried to access that list, since it was in a different class. Can someone help me out here please?

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• Create NinePatch at Runtime

  - by Pedro Lopes

  Hello everybody! I have a business need to create the NinePatchDrawable objects at runtime, this is, an exterior .png image is received from a server and it has to be applied in a button's background (for example) as a nine patch. I have tried to create the NinePatchDrawable object, but the constructor asks me for a "byte[] chuck" that describes the patch. The thing is, I have no idea on how to build this chunck from a bitmap that does not have the 9patch information in it. Any ideas on this topic? Am I seeing the problem from a wrong perpective? Thanks!

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• Serialized form fields in Ruby on Rails problem

  - by Violet

  I'm having a problem making serialized columns in my model persist correctly in forms. If my model validation fails I want to redisplay the "new" page with all my model data still in the forms. Right now, everything except the serialized fields seem to persist (if my Order fails to purchase, on the "new" page the email is still filled in but the shipping address fields are not). Is this a Rails bug or am I doing something wrong? My model: class Order < ActiveRecord::Base serialize :shipping_address end My controller: def new @order = Order.new end def create @order = Order.new params[:order] if @order.purchase then render :action => "success" else render :action => "new" end end My view, new.html.haml: = form_for @order do |f| - if @order.errors.any? #errorExplanation %p The following errors occurred: %ul - for msg in @order.errors.full_messages %li= msg %h2 Billing Information = f.label :email = f.text_field :email %h2 Shipping Address = f.fields_for :shipping_address do |b| %p.field.address = b.label :address1 = b.text_field :address1 %p= f.submit "Place Order"

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• Javascript image change causes embeded UserControls to flicker

  - by Sam Barham

  I have a n html page being displayed in IE. It has some buttons made up of images with mouseover/mouseout events on them in JavaScript, and a bunch of embedded .Net UserControls. When the mouseover/mouseout events fire, I change the images src to something else (simple rollover effect). The problem is that the UserControls often (but not always) flicker when this happens. To be clear, the images don't flicker, and the rest of the page doesn't flicker, just the embedded controls. This page is local, not coming from a server or anything. So, any ideas? More information : I've noticed that highlighting text does it too...

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• PHP - Zend Soap Request to .NET SOAP Server

  - by G0D

  Hello! I'd like a little bit of assistance here. I am trying to send a request to a .NET SOAP server from PHP with Zend. I have the WSDL file but it does not contain any header information. Though I have tried to add a custom header this does not seem to work and the worst is that the WSDL file itself does not seem to be "right"..... Here is the link: http://www.speedex.gr/getvoutrans/getvoutrans.asmx The WSDL can be found in the same link by adding ?WSDL My request is: GetVouTrans Thanx in advance!

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• my realtime network receiving time differs a lot, anyone can help?

  - by sguox002

  I wrote a program using tcpip sockets to send commands to a device and receive the data from the device. The data size would be around 200kB to 600KB. The computer is directly connected to the device using a 100MB network. I found that the sending packets always arrive at the computer at 100MB/s speed (I have debugging information on the unit and I also verified this using some network monitoring software), but the receiving time differs a lot from 40ms to 250ms, even if the size is the same (I have a receiving buffer about 700K and the receiving window of 8092 bytes and changing the window size does not change anything). The phenomena differs also on different computers, but on the same computer the problem is very stable. For example, receiving 300k bytes on computer a would be 40ms, but it may cost 200ms on another computer. I have disabled firewall, antivirus, all other network protocol except the TCP/IP. Any experts on this can give me some hints?

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• Exception Class: When to Derive from it, In C# (.Net)?

  - by IbrarMumtaz

  I am continuing with my exam revision. I have come across the usage of the Base Exception class and I have seen it on exam papers also. My question is when do you derive from the Base Exception class? I am of the impression if you want a custom class to throw an exception with more meaningful information, then you can create a custom exception class that contains the exact data that is representative of how your custom class is used and what scenario it is designed to be used for? Why can't my custom exception class derive from 'ApplicationException' or 'SecurityException' or the base 'Exception' class? I am of the impression that I should derive from the base Exception class and not the previous two. My question second is, when would you derive from the other two??? Are there any clear-cut distinctions as to when you would derive from either one of these three? Assuming there are no others I have I have missed out? Thanks, Ibrar

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• How to build a programmer's wiki

  - by Llistes Sugra

  For years I've missed a wiki so everyone could describe the new tools programmed, the servers where they are running, svn information, the internal rules of programming, how-tos, code samples, etc. The wiki might be used for the dozen of programmers in the company and the externals. I've been using a pmwiki (easy install) and now I want a better approach. What wiki do you use? What plug-ins? Do you think there are better systems than wiki for this?

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• manifest.mf is overwritten by ecplise during jar export

  - by freedev

  Hello guys, I would like make an executable jar archive with eclipse. So into my project I created file src/META-INF/MANIFEST.MF : Manifest-Version: 1.0 Main-Class: MainClass Class-Path: . But when I export my java eclipse project eclipse warn me with following message: "JAR export finished with warnings. See details for additional information. myproject/src/META-INF/MANIFEST.MF was replaced by the generated MANIFEST.MF and is no longer in the JAR." Anyone know how I can avoid this when I export my project in eclipse?

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• How does one capture H.323 voice traffic on a VOIP network?

  - by Chris Holmes

  What I am trying to do is capture the WAV data of a phone conversation on a VOIP network using SharpPCap/PCap.Net. We are using the H.323 recommendation and my understanding is that voice data is located in the RTP packets. However, there is no way to heuristically determine if a UDP packet is a RTP packet, so we have to do more work before we can capture the data. The H.323 recommendation apparently uses a lot of traffic on specific TCP ports to negotiate the call before the WAV data is sent via RTP. However, I am having very little luck determining what data is actually sent on those TCP ports, when it is sent, what the packets look like, how to handle it, etc. If anyone has any information on how to go about this I'd really appreciate it. My Google-Fu seems to be failing me on this one.

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• Animation with Initial Velocity

  - by abustin

  I've been trying to solve this problem for a number of days now but I must be missing something. Known Variables: vi = Initial Velocity t = Animation Duration d = Distance The function I'm trying to create: D(t) = the current distance for a given time Using this information I want to be able to create a smooth animation curve with varying velocity (ease-in/ease-out). The animation must be able ease-in from an initial velocity. The animation must be exactly t seconds and must be travel exactly d units. The curve should lean towards the average velocity with acceleration occurring at the beginning and the end portions of the curve. I'm open to extra configuration variables. The best I've been able to come up with is something that doesn't factor in the initial velocity. I'm hoping someone smarter can help me out. ;) Thank you! p.s. I'm working with an ECMAScript variant

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• Redimming arrays in VBA

  - by Mike

  I have 3 arrays of data, that are filled by reading off of an excel sheet, some of the points of data are missing and as such have just been entered into excel as "NA" so I want to look through my array and find each instance of these NA's and remove them from the array since the information is useless. I need to update all three arrays at the same time. Sub group_data() Dim country(), roe(), iCap() As String Dim i As Integer For i = 1 To 3357 country(i) = Workbooks("restcompfirm.xls").Worksheets("Sheet1").Range("C1").Offset(i, 0) roe(i) = Workbooks("restcompfirm.xls").Worksheets("Sheet1").Range("AP1").Offset(i, 0) iCap(i) = Workbooks("restcompfirm.xls").Worksheets("Sheet1").Range("BM1").Offset(i, 0) Next i End Sub So if I find a "NA" as one of the values in roe or iCap I want to get rid of that piece of data in all there arrays.

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• Can anybody help me out with this error.?

  - by kumar

  Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property. in jquery gird on button click i am displaying something like 28000 rows? I know some of them are sujjested to define the JsonmaxLength in web config file.. but its not working for me? can anybody tell me about this? thanks

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• IIS errors since upgrading to dot net 4

  - by user376085

  Back in October we upgraded one of our sites (on IIS 6) from .net 3.5 to .net 4.0. Since then we have been getting the following warning and error pretty much everyday: Warning: ISAPI 'c:\windows\microsoft.net\framework\v4.0.30319\aspnet_isapi.dll' reported itself as unhealthy for the following reason: 'Deadlock detected'. Error: It is not possible to run two different versions of ASP.NET in the same IIS process. Please use the IIS Administration Tool to reconfigure your server to run the application in a separate process. We have checked all applications and ensured that they are running on the correct versions of ASP.NET and also in their own separate app pools. We have looked at the IIS logs at the time the errors are recorded but this doesn't give any clues as to the issue. Is there a tool available that could give us more information as as to which application is causing the errors and what was happening at the time?

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• Java object caching, which is faster, reading from a file or from a remote machine?

  - by Kumar225

  I am at a point where I need to take the decision on what to do when caching of objects reaches the configured threshold. Should I store the objects in a indexed file (like provided by JCS) and read them from the file (file IO) when required or have the object stored in a distributed cache (network, serialization, deserialization) We are using Solaris as OS. ============================ Adding some more information. I have this question so as to determine if I can switch to distributed caching. The remote server which will have cache will have more memory and better disk and this remote server will only be used for caching. One of the problems we cannot increase the locally cached objects is , it stores the cached objects in JVM heap which has limited memory(using 32bit JVM). ======================================================================== Thanks, we finally ended up choosing Coherence as our Cache product. This provides many cache configuration topologies, in process vs remote vs disk ..etc.

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• Scala in image procesing

  - by Mayank Sinha

  I am new to scala and keep on researching and compiling programs , But i am more interested in Image processing in scala. Iam doing project in eclipse environment from http://www.scala-lang.org/download/2.11.0-M5.html but i couldn't find any resource to do image processing in scala . please provide me all information i.e How to install image processing package till manuals of the package to read and write image. I have tried Maven ,jmagic,opencv ,javacv etc but couldn't succeeded. Please reply with in hours my job is at stake. Mayank

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• SQLAlchemy custom sorting algorithms when using SQL indexes

  - by David M

  Is it possible to write custom collation functions with indexes in SQLAlchemy? SQLite for example allows specifying the sorting function at a C level as sqlite3_create_collation(). An implementation of some of the Unicode collation algorithm has been provided by James Tauber here, which for example sorts all the "a"'s close together whether they have accents on them or not. Other examples of why this might be useful is for different alphabet orders (languages other than English) and sorting numeric values (sorting 10 after 9 rather than codepoint order.) Is this possible in SQLAlchemy? If not, is it supported by the pysqlite3 or MySQLdb modules, or for any other SQL database modules supported by python for that matter? Any information would be greatly appreciated.

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• Iterative / Additive MD5

  - by Andrew Robinson

  I need to generate a checksum over a dictionary. Keys and Values. Is there any simple way to accomplish this in an iterative way. foreach(var item in dic.Keys) checksum += checksum(dic[item]) + checksum(item); In this case, keys and values could be converted to strings, concatinated and then a single checksum applied over these but is there a better way? Ideally MD5 but other options could work. Using this to validate data that is passed over a couple of storage methods. The checksum is then encrypted along with some other information (using AES) so I am not horribly worried about an ideal, unbreakable checksum.

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• Python subprocess.Popen

  - by Albert

  I have that code: #!/usr/bin/python -u localport = 9876 import sys, re, os from subprocess import * tun = Popen(["./newtunnel", "22", str(localport)], stdout=PIPE, stderr=STDOUT) print "** Started tunnel, waiting to be ready ..." for l in tun.stdout: sys.stdout.write(l) if re.search("Waiting for connection", l): print "** Ready for SSH !" break The "./newtunnel" will not exit, it will constantly output more and more data to stdout. However, that code will not give any output and just keeps waiting in the tun.stdout. When I kill the newtunnel process externally, it flushes all the data to tun.stdout. So it seems that I can't get any data from the tun.stdout while it is still running. Why is that? How can I get the information? Note that the default bufsize for Popen is 0 (unbuffered). I can also specify bufsize=0 but that doesn't change anything.

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• How and Where do I learn about how to hook up my uncreated Database to a 3rd party API

  - by raln

  I want to create a database with information that I can send to a third party... they give their api on their website but they don't break it down for new / newbs like myself... I'm confused and was thinking of getting a developer to do this all for me but I DON'T want to get ripped off... and overpay All it is is a webapplication backed by a database onto their platform where they support different API's but I also need a function in my web app that can send various messages via XML, or SMPP to their webservice.. . hmm -Ken

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• P2 Touchpoint chmod not working?

  - by Michael

  I'm using Eclipse 3.5.2 and I've created a p2.inf with the following information: instructions.install = \ chmod(targetDir:@artifact,targetFile:$os$/libfoo.so,permissions:755); instructions.install.import= \ org.eclipse.equinox.p2.touchpoint.natives.chmod I placed the p2.inf inside the META-INF folder of the fragment, but when I install the update site, libfoo.so does not have execute permissions. After pulling my hair out, I tried a p2.inf referencing a non-existing *.so, but nothing seems to happen. No error messages, exceptions, or warnings of any kind to indicate the P2 touchpoint action failed... What's the deal? Any ideas?

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• SVN - Get all commit messages for a file?

  - by davidosomething

  Is there a way to get a nice list of all commit messages sorted by file? Something like this (as you can see, I don't want the messages specific to a certain file, just show messages for the entire commit if the file was part of the commit, repeats ok): -- index.php 2010-01-02 03:04:05 * added new paragraph 2010-01-01 03:04:05 * moved header out of index.php into header.php * header.php initial check-in 2009-12-31 03:04:05 * index.php initial check-in -- header.php 2010-01-03 03:04:05 * added new meta tags 2010-01-01 03:04:05 * moved header out of index.php into header.php * header.php initial check-in Additional information: svn log filename does something similar, but I want it to do this: get a list of files that have changed between yyyy-mm-dd (r2) and yyyy-mm-dd (r4) (i.e. svn log -q -v -r 2:4 changedfiles.txt strip extraneous crap from changedfiles.txt svn log each file in that list, as in: svn log < changedfiles.txt combinedlog.txt (just pseudocode, i know svn log takes arguments not input, but can't be bothered to write it out)

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• Linking Excel and Access

  - by Mel

  I run a sports program where i have a master roll of who is in which class in excel. I want to link this to a database in access that stores the other information about each athlete, e.g. address, parents name, school, medical details. I want to be able to add names to class in the excel speadsheet and have this automatically generate a record for that person in access. There also needs to be some failsafe for athletes that are in multiple classes. I was also doing class roles as pivot tables out of the access database so i need to code for classes and also have this allow for athletes in multiple classes/disciplines.

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