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How to remove proxy from WebRequest and leave DefaultWebProxy untouched

- by Elephantik

I use FtpWebRequest to do some FTP stuff and I need to connect directly (no proxy). However WebRequest.DefaultWebProxy contains IE proxy settings (I reckon). WebRequest request = WebRequest.Create("ftp://someftpserver/"); // request.Proxy is null here so setting it to null does not have any effect WebResponse response = request.GetResponse(); // connects using WebRequest.DefaultWebProxy My code is a piece in a huge application and I don't want to change WebRequest.DefaultWebProxy because it is global static property and it can have adverse impact on the other parts of the application. Any idea how to do it?

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Oracle - correlated subquery problems

- by FrustratedWithFormsDesigner

I have this query: select acc_num from (select distinct ac_outer.acc_num, ac_outer.owner from ac_tab ac_outer where (ac_outer.owner = '1234567') and ac_outer.owner = (select sq.owner from (select a1.owner from ac_tab a1 where a1.acc_num = ac_outer.acc_num order by a1.a_date desc, a1.b_date desc, a1.c_date desc) sq where rownum = 1) order by dbms_random.value()) subq order by acc_num; The idea is to get all acc_nums (not a primary key) from ac_tab, that have an owner of 1234567. Since an acc_num in ac_tab could have changed owners over time, I am trying to use the inner correlated subqueries to ensure that an acc_num is returned ONLY if it's most recent owner is 12345678. Naturally, it doesn't work (or I wouldn't be posting here ;) ) Oracle gives me an error: ORA-000904 ac_outer.acc_num is an invalid identifier. I thought that ac_outer should be visible to the correlated subqueries, but for some reason it's not. Is there a way to fix the query, or do I have to resort to PL/SQL to solve this? (Oracle verison is 10g)

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How to name variables wich are structs

- by evilpie

Hello, i often work on private projects using the WinApi, and as you might know, it has thousands of named and typedefed structs like MEMORY_BASIC_INFORMATION. I will stick to this one in my question, what still is preferred, or better when you want to name a variable of this type. Is there some kind of style guide for this case? For example if i need that variable for the VirtualQueryEx function. Some ideas: MEMORY_BASIC_INFORMATION memoryBasicInformation; MEMORY_BASIC_INFORMATION memory_basic_information; Just use the name of the struct non captialized and with or without the underlines. MEMORY_BASIC_INFORMATION basicInformation; MEMORY_BASIC_INFORMATION information; Short form? MEMORY_BASIC_INFORMATION mbi; I often see this style, using the abbreviation of the struct name. MEMORY_BASIC_INFORMATION buffer; VirtualQueryEx defines the third parameter lpBuffer (where you pass the pointer to the struct), so using this name might be an idea, too. Cheers

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PHP Escaping from HTML, faster, cleanner?!

- by rno

I've read about it from the php website (http://us3.php.net/manual/en/language.basic-syntax.phpmode.php) Using: echo "<html tag>" is slower and also annoying because you got to escape char like " with \" But what's about using $output = <<< EOF <html code> EOF; Then later on in the code I can use $output .= <<< EOF <some more html code> EOF; then when I want to print it: echo "$output"; I think it's a great idea, but really wonder what you PHP guru think about it. Cheers, rno

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Pet project ideas in Java

- by Amir Rachum

I'm looking for a pet project idea in Java. I'm a Software Engineering undergraduate finishing my 3rd year. I have also been working for the past 1.5-2 years programming in C++, and I get enough of that at work. I recently learned Java and I like it very much. Already done some project assignments and some really small console applications, but I'm looking for something to invest my time in. I would like a project that is complex enough to "brag about" (have it open sourced and get people interested, added to resume) and learn while doing it, but also simple enough to be able to at least have a working version in a few months. I know the most common advice is something that I need, but I admit I simply couldn't think of anything like that. Any ideas?

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Elements are listed in a vob but not able to checkout/checkin in CCRC

- by sunil devan

Hi, There are 2 windows domains named as OPR & BDC. In OPR domain the CCRC server is hosted, users accessing from BDC domain can able to connect to CCRC and list the vob....and also able to join the project. To perform any checkout/checkin/loading resources it is taking long time and after a day it is in same state.Connectivity is fine to OPR domain from BDC domain ( ping & tracrt is working fine) . Could you please let me know if you have some idea about it? Thanks, Sunil

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Saving a movie generated with Jython/JES on local disk

- by Golgauth

I made an autogenerated movie clip using JES (Jython Environment for Students). I can play it without any problem using playMovie(), but I can't figure out how to have it saved physically on disk. The full script is located here. ... movie = synthesizeFrameAndCreateMovie("D:\\FOLDER") print movie writeQuicktime(movie,"D:\\FOLDER\\movie.mov", 30) [LINE 35] #playMovie(movie) I get this error when calling the function writeQuicktime(): >>> ======= Loading Progam ======= Movie, frames: 60 The error was: Index: 0, Size: 0 I wasn't able to do what you wanted. The error java.lang.IndexOutOfBoundsException has occured Please check line 35 Note : I also tried the function writeAVI(), with the exact same result. This error sounds like a java bug in Jython/JES library. I am running JES under Windows 7 and have all the common Quicktime and AVI codex installed as well as the QTjava library in my jre... Any brilliant idea ? EDIT : Also tried the Linux version with same result for both QuickTime and AVI...

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Appending an element to a collection using LINQ

- by SRKX

I am trying to process some list with a functional approach in C#. The idea is that I have a collection of Tuple<T,double> and I want to change the Item 2 of some element T. The functional way to do so, as data is immutable, is to take the list, filter for all elements where the element is different from the one to change, and the append a new tuple with the new values. My problem is that I do not know how to append the element at the end. I would like to do: public List<Tuple<T,double>> Replace(List<Tuple<T,double>> collection, T term,double value) { return collection.Where(x=>!x.Item1.Equals(term)).Append(Tuple.Create(term,value)); } But there is no Append method. Is there something else?

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Cannot edit ColumnDefinitions property in Visual Studio WPF application, ellipsis are invisible!

- by SLC

I have a window that looks like this: <Window x:Class="MyWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="My Title" Height="300" Width="300" ResizeMode="NoResize" SizeToContent="Height" WindowStartupLocation="CenterOwner"> <DockPanel> <Grid x:Name="MyGrid" DockPanel.Dock="Top" Margin="10"> </Grid> </DockPanel> </Window> Pretty simple. The instructions I am following suggest that if I click the item, the properties window will appear (it does), and then I can click ColumnDefinitions (which is a Collection) to bring up the Collection Editor and add some columns. However, the ColumnDefinitions property looks like this: The ColumnDefinitions ellipsis you'd normally press is gone, or invisible, or something. Any idea why?

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Embedding Python and adding C functions to the interpreter

- by monoceres

I'm currently writing an applications that embedds the python interpreter. The idea is to have the program call user specified scripts on certain events in the program. I managed this part but now I want the scripts to be able to call functions in my program. Here's my code so far: #include "python.h" static PyObject* myTest(PyObject* self,PyObject *args) { return Py_BuildValue("s","123456789"); } static PyMethodDef myMethods[] = {{"myTest",myTest},{NULL,NULL}}; int main() { Py_Initialize(); Py_InitModule("PROGRAM",myMethods); PyRun_SimpleString("print PROGRAM.myTest()"); Py_Finalize(); } Thanks!

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Python list as *args?

- by Cap

I have two Python functions, both of which take variable arguments in their function definitions. To give a simple example: def func1(*args): for arg in args: print arg def func2(*args): return [2 * arg for arg in args] I'd like to compose them -- as in func1(func2(3, 4, 5)) -- but I don't want args in func1 to be ([6, 7, 8],), I want it to be (6, 7, 8), as if it was called as func1(6, 7, 8) rather than func1([6, 7, 8]). Normally, I would just use func1(*func2(3, 4, 5)) or have func1 check to see if args[0] was a list. Unfortunately, I can't use the first solution in this particular instance and to apply the second would require doing such a check in many places (there are a lot of functions in the role of func1). Does anybody have an idea how to do this? I imagine some sort of introspection could be used, but I could be wrong.

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Exposing classes inside modules within a Python package directly in the package's namespace

- by Richard Waite

I have a wxPython application with the various GUI classes in their own modules in a package called gui. With this setup, importing the main window would be done as follows: from gui.mainwindow import MainWindow This looked messy to me so I changed the __init__.py file for the gui package to import the class directly into the package namespace: from mainwindow import MainWindow This allows me to import the main window like this: from gui import MainWindow This looks better to me aesthetically and I think it also more closely represents what I'm doing (importing the MainWindow class from the gui "namespace"). The reason I made the gui package was to keep all the GUI stuff together. I could have just as easily made a single gui module and stuffed all the GUI classes in it, but I think that would have been unmanageable. The package now appears to work like a module, but allows me to separate the classes into their own modules (along with helper functions, etc.). This whole thing strikes me as somewhat petty, I just thought I'd throw it out there to see what others think about the idea.

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Why is my onSharedPreferenceChangeListener being called multiple times when I change a pref.

- by brockoli

I've written an app with 3 tabs. Each tab has the same list view with different data sources. I have setup SharedPreferences in the tabhost activity, but I put my onSharedPreferenceChangeListener method in my listactivity. When I change a preference, my listener gets called and it updates my database. This is all working. However, if I change the data in tab 1, it calls my listener once. If I change the data for tab 2 it calls it twice and if I change the data in tab 3 it calls it three times. Any idea why it works this way? I guess I could setup my shared prefs in my listactivity and that might avoid the issue, but I'm curious why my listener is called multiple times if it's in a different tab. brockoli

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use qt and django to create desktop apps

- by sandra

Hi guys, I had this idea of creating desktop apps using django. The principe being: - Write the django app, and use something like cherrypy to serve it. - Write a Qt app in C++ to access it and this by using QtWebview (webkit) I'd like to "bundle" this in a single app. The lighter, the better :) So here are my questions and if you have better ideas and suggestions, please share them :) Is it possible to serve a django app with a c++ one? (a c++ server embedding python)? anyone did this before? Do you have some articles, blog posts? Thanks a lot!

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chained msi's/Bootstrapper/prerequisite?

- by MzTyla

I have a few component msi packages that need to installed together to form the end application. The problem is: the components that make up the package can be updated and the component relaunched on the http file server.What approach should i take? The installer that i am writing is the 'master' installer. Which needs to be able to read what version of each component is installed on ther client machine in order to perform an upgrade only on that one component. Also if the application is installed for the first time the installer will download and install all required components. I am using Installshield 2009. I have looked into chained MSI's but the master installer is empty. as it needs to be as lightweight as possible. I have no idea how to write a bootstrapper application and my company perfers that i use installshield to write the installer. I have researched - and apparently pre-requisites are not meant to be uninstalled.

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Where do all these messages come from?

- by stacker

This configuration works fine, but inbound-channel-adapter which is supposed to poll every 15 secs is running continously. Does anyone have an idea what I'm doning wrong? <si:channel id="msgChannel" /> <si:inbound-channel-adapter ref="jdbcInputAdapter" method="fetchData" channel="msgChannel"> <si:poller> <si:interval-trigger interval="15000" /> </si:poller> </si:inbound-channel-adapter> <si:outbound-channel-adapter ref="shouter" method="shout" channel="msgChannel"/>

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Will this LINQ-TO-SQL query fetch all records from the table ?

- by Puneet Dudeja

public long GetNewCRN() { return ((from c in DataContext.GetTable<Cust_Master>() select c.CUSTSERH_CRN).Max() + 1); } Will this Linq to Sql query fetch all records from the table first and then select the maximum of the column ? If yes, then isn't it a bad idea using linq to sql instead of normal SqlCommand ? Or is there any other way of doing it in linq to sql ? When I attach Console.Out, I see nothing(command prompt does not even open). But when I include following:- context.Log = new System.IO.StreamWriter("d:\\abcd.txt"); I get an error, that "The process can not access the file because it is being used by another process" and that process is "w3wp.exe". How can I see the sql commands being executed by DataContext then ?

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Whats the best solution for a database used in conjunction with Maps in Android?

- by Andrew

Could someone please point me in the right direction. My project involves a database where users enter their address and other info from my website. This database is then referenced in my android application to show the locations of these addresses in my database. I have yet to start and just came up with this idea. My question is, what would be the best method to create a database easily modified through my website (mySQL, php, etc), and also easily referenced easily through Android and the Google Maps API? I need some ideas on the languages I will need to use to create this database and website so I can go buy the necessary books to start reading up. Thanks so much

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Missing prop-base file problem

- by Tony

I am using Eclipse and SVNSubversion as a repository for a Java project. After updating the local repository and starting Eclipse, an error (in the Problems tab) appeared stating that a specific prop-base file was missing from the build path. Being inexperienced, I have accidentally deleted the prop-base file icon from the project build-path library section. Since then the numbers of errors have grown exponentially... What should I do? Updating the local repository and/or starting a new Eclipse project from the same source did not solve the problem, does anyone have an idea?

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Data access strategy for a site like SO - sorted SQL queries and simultaneous updates that affect th

- by Kaleb Brasee

I'm working on a Grails web app that would be similar in access patterns to StackOverflow or MyLifeIsAverage - users can vote on entries, and their votes are used to sort a list of entries based on the number of votes. Votes can be placed while the sorted select queries are being performed. Since the selects would lock a large portion of the table, it seems that normal transaction locking would cause updates to take forever (given enough traffic). Has anyone worked on an app with a data access pattern such as this, and if so, did you find a way to allow these updates and selects to happen more or less concurrently? Does anyone know how sites like SO approach this? My thought was to make the sorted selects dirty reads, since it is acceptable if they're not completely up to date all of the time. This is my only idea for possibly improving performance of these selects and updates, but I thought someone might know a better way.

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WPF: DataGrid Custom. ColumnDesign with my own classes

- by user437899

Hi, iam looking for a datagrid which contains objects from my class. class user { string name; int ID; ... } i tried AutoGenerateColumns = true. this will add columns (name, ID, ... like the properties of my class) but i want a different design. not all attributes from the object shold be shown and the columnheader shouldn't be generated from the variablenames... if i build a custom. column-design, i cant add my objects / they will not be displayed. is it possible to define my own columns according to my objects/class. i read about databindings, but i have no idea how i can bind objects/classes in WPF. (in Visual Studio i cant choose my class as datacontext)

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How do polymorphic inline caches work with mutable types?

- by kingkilr

A polymorphic inline cache works by caching the actual method by the type of the object, in order to avoid the expensive lookup procedures (usually a hashtable lookup). How does one handle the type comparison if the type objects are mutable (i.e. the method might be monkey patched into something different at run time). The one idea I've come up with would be a "class counter" that gets incremented each time a method is adjusted, however this seems like it would be exceptionally expensive in a heavily monkey patched environ since it would kill all the PICs for that class, even if the methods for them weren't altered. I'm sure there must be a good solution to this, as this issue is directly applicable to Javascript and AFAIK all 3 of the big JS VMs have PICs (wow acronym ahoy).

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Finding IterationID in TFS

- by Kolchak

Hi - we are linking Iterations within TFS to an external system for tracking projects through the entire company. In the past, we were linking using the IterationPath in a TFS Project, but the problem is that people rename these IterationPaths as the projects progress, and the link is lost. So after some research, I'm thinking of doing the linking by using the IterationID. The IterationID in the TFSWarehouse is NOT the same as the IterationID in the WorkItemTracking table, and I can't seem to find an easy way to find the IterationID of an IterationPath? Anyone got any idea how we may be able to achieve this?

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How to communicate between C# and Wpf projects ?

- by Wazzz

Hey folks , i'm working with 3 projects , one C# (let's called it A ) the other two are Wpf projects(let's call them B,C). The project B has a main window which contains a button ,when i press the button it shows the project "A" main's window .(i've done that by adding the right references and doing the code below in button click event handler : CsharpForm.Form1 d = new CsharpForm.Form1(); d.ShowDialog(); , but The Problem i have now is how do to the opposite ?? i have a button in project "C"(wpf one ) and want it to open a window of project "a" (C# ) Do u know any idea about this ?

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Nokogiri Not Parsing File

- by Jesse J

I'm using Nokogiri to parse pepXML files from different peptide search engines. I have two pepXML files, both of which appear, inasmuch as I can tell, to be of correct format, and puts Nokogiri::XML(IO.read(file)) will output the whole XML file for both files. The problem is, doc.xpath("any valid xpath") will parse the tag from one of the files, but not the other. No errors are given, so I have no idea why it won't parse. Anyone know of any reasons why Nokogiri wouldn't parse something out?

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