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• Creating an installer with WPF forms, packaged files and custom setup actions in C#

  - by RodH257

  I'm trying to create a way of deploying a set of tools (which are add-ins to 3rd party software) to my users. I would like to do the following: User Enters Serial Dlls in their directory structure is extracted to program files a file is copied to a location in ProgramData (this registers my add-ins to the 3rd party application) Online activation for software is performed Can anyone point me into the right direction for this? I had a look at deployment projects in Visual Studio but I'm not sure if they are what I'm after. Main problem is they are ugly, I would like to have a nice WPF installer, and have a more custom experience. But I guess that can be traded off if its going to make things easier. I was thinking, I could just make my own C# project that extracts the files, but I have no idea how to package them up and extract them all as part of one download (like the MSI files that the deployment projects create). Can anyone point me in the right direction?

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• How to customize the ColorPicker class in Adobe flex3.0?

  - by Ankur Sharma

  i have to make the colorpiker tool of flex, to be a customized one, i beleive you have seen the color picker tool of flex, when you click on the colorpicker, a swatch panel gets open, right?? now in that swatch, there are three compoenents, one is thw colorbox(on top left), beside right to this is the text field holding the hex code of the color and below these two tools, is the colors present in the small rectangles, now my need is this, i want to add three more buttons on the top empty space after textfield, so that structure of the colors pciker looks like this colorbox | textfield | button1 | button2 | button3 color rectangles, showing all default colors i beleive u understood, what i meant here, so plzz help me out in making a custom colorpciker class, thanx Namaste

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• break dataframe into subsets by factor values, send to function that returns glm class, how to recom

  - by Alex Holcombe

  Thanks to Hadley's plyr package ddply function we can take a dataframe, break it down into subdataframes by factors, send each to a function, and then combine the function results for each subdataframe into a new dataframe. But what if the function returns an object of a class like glm or in my case, a c("glm", "lm"). Then, these can't be combined into a dataframe can they? I get this error instead Error in as.data.frame.default(x[[i]], optional = TRUE, stringsAsFactors = stringsAsFactors) : cannot coerce class 'c("glm", "lm")' into a data.frame Is there some more flexible data structure that will accommodate all the complex glm class results of my function calls, preserving the information regarding the dataframe subsets? Or should this be done in an entirely different way?

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• Difference between and dll & EXE in PE format?

  - by Rajakumar

  Hi , I know exe and dlls are almost same in pe format ,i have a problem in insert a new section in a (user32)dll ,while run a application exe ,it produces Unable to locate component error .i.e ^*#%&@$<.dll(junk) was not found ,reinstatallation may fix the problem. whenever do the samething in exe ,it was work fine,but dll does not give desired output ,i cannot understand ,its behaviour.both exe &dll's are same structure ,then whats the problem ,is there may be a entry point problem ? or what is the problem ,pleasse help towards the error ? thanks...

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• SQL for selecting only the last item from a versioned table

  - by Jeremy

  I have a table with the following structure: CREATE TABLE items ( id serial not null, title character varying(255), version_id integer DEFAULT 1, parent_id integer, CONSTRAINT items_pkey PRIMARY KEY (id) ) So the table contains rows that looks as so: id: 1, title: "Version 1", version_id: 1, parent_id: 1 id: 2, title: "Version 2", version_id: 2, parent_id: 1 id: 3, title: "Completely different record", version_id: 1, parent_id: 3 This is the SQL code I've got for selecting out all of the records with the most recent version ids: select * from items inner join ( select parent_id, max(version_id) as version_id from items group by parent_id) as vi on items.version_id = vi.version_id and items.parent_id = vi.parent_id Is there a way to write that SQL statement so that it doesn't use a subselect?

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• Passing List (Of ChildClass) as parameter to method expecting List (Of ParentClass)?

  - by Nicholas

  Hi, I have implemented inheritance for two parent classes called Table and Field. Each parent class has several child classes. In the Table parent class, I created a method that expects parameter List(Of Field). I get an error when trying to pass in parameter List(Of ChildField) to the method that expects a parameter of List(Of Field). The error message is as below: Value of type 'System.Collections.Generic.List(Of com.hlb.icisbatch.data.ChildField)' cannot be converted to 'System.Collections.Generic.List(Of com.hlb.icisbatch.data.Field)' My question, is it possible to pass in list of child class as parameter? If it is not a list then it works fine. But somehow it is not possible with lists? Below is sample class structure: Table Field | | ChildTable ChildField I have a method in the parent class: Public Class Table Public Sub New() End Sub Public Overridable Sub setFields(ByVal list As List(Of Field) 'Do work here' End Sub End Class and method in child class: Public Class ChildTable Public Sub New(ByVal list As List(Of ChildField) setFields(ChildField) End Sub End Class

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• shared libraries creating a soft link

  - by robUK

  Hello, Redhat 5.5 gcc version 4.1.2 I have a directory call lib, and in that directory I have all the shared libraries (about 30) that we get from our customer as we use their API. We link with this API. directory structure: /usr/CSAPI/lib However, our customer will update their API so we get new libraries, normally about 3 or 4. What I have been doing is when I get new libraries. Is to remove the old one and put in another directory. And replace them with the new libaries in the lib directory. /usr/CSAPI/Old_libs The new and old will have the same name. i.e. libcs.so < old libcs.so < new Is there a better way to manage this? I was thinking of creating a soft line, but as the names are the same, I am not sure that this will work. Many thanks,

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• ASP.NET Web Service - Passing a base object with list/collection?

  - by schooner

  We need to create a simple web service in ASP.NET that can be called from PHP or other languages. This in turn will be used to update records in a database for an item submission. The core part is fairly simple, we have a base set of fields for the object - first name, last name, birth date, city, etc. In addition however we need to accept a list of items associated with that object that can range from 0-n. Jan 1 2009, ABC May 1 2010, 123 Jun 30 2010, XXXXX What would be the best way to structure this so it can be easily passed to the ASP.NET web service and processed as a single call for the entire object? Would passing the list of items as a single delimted string be a wise approach? Ex: Jan 1 2009, ABC|May 1 2010, 123|Jun 30 2010, XXXXX

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• Subversion Repository Layout

  - by Tim Long

  Most subversion tools create a default repository layout with /trunk, /branches and /tags. The documentation also recommends not using separate repositories for each project, so that code can be more easily shared. Following that advice has led to me having a repository with the following layout: /trunk /Project1 /Project2 /branches /Project1 /Project2 /tags /Project1 /Project2 and so on, you get the idea. Over time, I've found this structure a bit clumsy and it occurred to me that there's an alternative interpretation of the recommendations, such as: /Project1 /trunk /branches /tags /Project2 /trunk /branches /tags So, which layout do people use, and why? Or - is there another way to do things that I've completely missed?

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• ruby-gstreamer doesn't send EOS message

  - by Cheba

  I've managed to make it play sound but it never gets EOS message. And thus script never exits. require 'gst' main_loop = GLib::MainLoop.new pipeline = Gst::Pipeline.new "audio-player" source = Gst::ElementFactory.make "filesrc", "file-source" source.location = "/usr/share/sounds/gnome/default/alerts/bark.ogg" decoder = Gst::ElementFactory.make "decodebin", "decoder" conv = Gst::ElementFactory.make "audioconvert", "converter" sink = Gst::ElementFactory.make "alsasink", "output" pipeline.add source, decoder, conv, sink source >> decoder conv >> sink decoder.signal_connect "pad-added" do |element, pad, data| pad >> conv['sink'] end pipeline.bus.add_watch do |bus, message| puts "Message: #{message.inspect}" case message.type when Gst::Message::Type::ERROR puts message.structure["debug"] main_loop.quit when Gst::Message::Type::EOS puts 'End of stream' main_loop.quit end end pipeline.play begin puts 'Running main loop' main_loop.run ensure puts 'Shutting down main loop' pipeline.stop end

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• Flatten a PHP array

  - by deadkarma

  Say I have a form with these fields, and cannot rename them: <input type="text" name="foo[bar]" /> <input type="text" name="foo[baz]" /> <input type="text" name="foo[bat][faz]" /> When submitted, PHP turns this into an array: Array ( [foo] => Array ( [bar] => foo bar [baz] => foo baz [bat] => Array ( [faz] => foo bat faz ) ) ) What methods are there to convert or flatten this array into a data structure such as: Array ( [foo[bar]] => foo bar [foo[baz]] => foo baz [foo[bat][faz]] => foo bat faz )

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• Critiquing my first Python script

  - by tipu

  A little bit of background: I'm building an inverted index for a search engine. I was originally using PHP, but because of the amount of times I needed to write to disk, I wanted to make a threaded indexer. There's a problem with that because PHP is not thread safe. I then tried Java, but I ended up with at least 20 try catch blocks because of the JSON data structure I was using and working with files. The code was just too big and ugly. Then I figured I should pick up some Python because it's flexible like PHP but also thread safe. Though I'm open to all criticism, what I'd like to learn is the shortcuts that the Python language/library provides that I skipped over. This is a PHP-afide Python script because all I really did was translate the PHP script line by line to what I thought was it's Python equivalent. Thanks. http://pastebin.com/xrg7rf9w

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• Linq to Sql Projection Help

  - by Micah

  I've reached the end of my Linq rope. Need your help! Heres my table structure first(all linq to sql objects): InventoryItems -ID -AmtInStock IventoryKits -ID InventoryKits_to_InventoryItems -InventoryItemID -InventoryKitID So i need to do a projection like the following var q2=from k in GetAllKits()//returns IQueryable<InventoryKit> select new VMPublication()//ViewModel Object { ID = k.ID, Name = k.Name, WebAmountInStock = ,//need to get the Min() AmtInStock from InventoryItems here ItemCode = k.ItemCode, WebAmountOrdered = k.AmtOrdered.ToString(), WebReminderAmount = "", WebAmountWarning="", Type = "Kit" }; i have no idea how to get that Min() of InventoryItem's AmtInStock in that query. Please help! Very Appreciated!

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• using document() function in .NET XSLT generates error

  - by Simon

  I'd like to use embedded resources in my XSLT file, but while invoking 'document(...)' C# complains that "Error during loading document ..." I'd like to use defined resources in XSLT file and get them by this: "document('')//my:resources/"... How can i do that?? ex xsl: <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:my="xslt-gruper-v1.2.xsl" exclude-result-prefixes="my"> <my:resources> <one>tryb</one> </my:resources> <xsl:variable name="res" select="document('')/*/my:resources/("/> </xsl:stylesheet> How can i get access to such structure without exceptions in C#? I'll add that during static transform via ex. Opera everything works fine.

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• Web part error on Team Foundation Server Project Portal Sharepoint site...

  - by user304671

  Hi all, I recently installed TFS 2010 with the included sharepoint services on a single server. I am getting the following error multiple times on the project dashboard web page on the TFS2010 project protal after creating a brand new project in the default project collection. I am not an expert with WSS, so any guidance will be greatly appreciated. After reading a few articles I understand there are some DLL that are probably not declared as safe in a web config file. But I am not sure which DLL they are and where the web config file is. I looked at IIS to determine the directory structure in IIS is quiet different to the URL path ...Thanks very much. Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type is not registered as safe. Thanks in advance..

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• Cloning java ArrayList and preventing it from modifications

  - by user222164

  I have a data structure like a database Rowset, which has got Rows and Rows have Columns. I need to initialize a Columns with null values, current code is to loop thru each column for a row and initialize values to NULL. Which is very inefficient if you have 100s or rows and 10s of column. So instead I am keeping a initialized ArrayList of columns are RowSet level, and then doing a clone of this Arraylist for individual rows, as I believe clone() is faster than looping thru each element. row.columnsValues = rowsset.NullArrayList.clone() Problem with this is NullArrayList can be accidentally modified after being cloned, thus sacrificing the integrity of ArrayList at RowSet level, to prevent I am doing 3 things 1) Delcaring ArrayList as final 2) Any elements I insert are final or null 3) Methods thurough this arrayList are passed to other arrays are declared a final. Sounds like a plan, do you see any holes ?

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• Array of structures CLI

  - by Nitroglycerin

  public value struct ListOfWindows { HWND hWindow; int winID; String^ capName; }; thats my structure now i have created an array of them: array<ListOfWindows ^> ^ MyArray = gcnew array<ListOfWindows ^>(5); now to test if that works i made a simple function: void AddStruct( ) { HWND temp = ::FindWindow( NULL, "Test" ); if( temp == NULL ) return; MyArray[0]->hWindow = temp; // debug time error.. return; } ERROR: An unhandled exception of type 'System.NullReferenceException' occurred in Window.exe Additional information: Object reference not set to an instance of an object. dont know what to do.. kinda new to CLI so if you can help please do.. Thanks.

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• When is referential integrity not appropriate?

  - by Curtis Inderwiesche

  I understand the need to have referential integrity for limiting specific values on entry or possibly preventing them from removal upon a request of deletion. However, I am unclear as to a valid use case which would exclude this mechanism from always being used. I guess this would fall into several sub-questions: When is referential integrity not appropriate? Is it appropriate to have fields containing multiple and/or possibly incomplete subsets of a foreign key's list? Typically, should this be a schema structure design decision or an interface design decision? (Or possibly neither or both) Thoughts?

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• In search of opinions on web based version control systems

  - by tom smith

  Hi. Researching various open source, web-based document management/version control systems. I've checked google/questions here, etc... I'm looking for a lightweight web-based (apache) document mgmt/version control app that runs on top of SVN. I need to have the ability to: have multiple users checkin/checkout have a workflow (when userA checks the file in, and finishes the app passes it to the next person, etc... the app needs to allow me to have a structure where the files can be moved as a group. the files will be changed on a monthly basis app needs to have a access/premission control system. some people can see certain files, and perform certain actions on the files I imagine that I'm going to have 40-50 people dealing with the different files. I imagine that I'm going to have 2000-3000 files that have to be massaged. I'd prefer that the app be php based if possible, as opposed to a straight java app. Thanks

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• I need an algorithm to find the best path

  - by user242635

  I need an algorithm to find the best solution of a path finding problem. The problem can be stated as: At the starting point I can proceed along multiple different paths. At each step there are another multiple possible choices where to proceed. There are two operations possible at each step: A boundary condition that determine if a path is acceptable or not. A condition that determine if the path has reached the final destination and can be selected as the best one. At each step a number of paths can be eliminated, letting only the "good" paths to grow. I hope this sufficiently describes my problem, and also a possible brute force solution. My question is: is the brute force is the best/only solution to the problem, and I need some hint also about the best coding structure of the algorithm.

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• Convert data retrieved from MySQL database into JSON object using Python/Django

  - by rohanbk

  I have a MySQL database called People which contains the following schema <id,name,foodchoice1,foodchoice2>. The database contains a list of people and the two choices of food they wish to have at a party (for example). I want to create some kind of Python web-service that will output a JSON object. An example of output should be like: { "guestlist": [ {"id":1,"name":"Bob","choice1":"chicken","choice2":"pasta"},{"id":2,"name":"Alice","choice1":"pasta","choice2":"chicken"} ], "partyname": "My awesome party", "day": "1", "month": "June", "2010": "null" } Basically every guest is stored into a dictionary 'guestlist' along with their choices of food. At the end of the JSON object is just some additional information that only needs to be mentioned once. The question that I have is regarding the method that I need to utilize to grab the data from my database, and create the JSON object. Do I need to use a standard Model/View structure of Django or can I get away with something that is much simpler since what I need to do is really simple?

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• Do minidump files contain the timestamp of the crash?

  - by Roger Lipscombe

  The MiscInfoStream in a minidump file contains the process create time. I'd like to find out how long the process has been running for before the crash. Does a minidump file contain the exception timestamp anywhere? WinDbg on this dump file displays the following, which implies that it's in there somewhere... Debug session time: Tue Dec 29 15:49:20.000 2009 (GMT+0) System Uptime: not available Process Uptime: 0 days 0:33:03.000 Note that today's Mar 15, so this is almost certainly the timestamp of the crash. I'd like a programmatic way to retrieve that value and the "Process Uptime" value. I found the MINIDUMP_MISC_INFO_3 structure, which contains some timezone information, but it doesn't seem to contain the exception time.

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• Best Image Replacement Technique

  - by Josh Stodola

  What is the best (as in cross-browser) technique to do image replacement in CSS? I am using sprites to do my navigation, but I want the markup to remain SEO friendly. Given the following HTML structure... <div id="menu"> <ul> <li><a href="#">Test</a></li> <li><a href="#">Tester</a></li> <li><a href="#">Testing Testing</a></li> </ul> </div> What is the best way to replace the text with a background image using CSS only? I am currently using this... text-indent: -9999px; But, it fails with CSS on, and images off.

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• What are the best options for a root filesystem hosted on SSD under Linux

  - by stsquad

  I'm working on an embedded system which is going to be booting and hosting it's rootfs on an SSD disk. We are currently looking at using Intel X-18M SSDs. The file system structure will have a fairly static /usr section (modulo software upgrades) and an active /var and /var/log for maintaining state and logging. Given the wear-levelling done by the underlying flash does having separate partitions help or hinder? As modern SSDs appear as straight block devices and hide their mapping magic behind their firmware is there any point trying to optimise the choice of file-system that sits on-top of the SSD? Finally does enable SMART monitoring make any sense in this context or are their SSD specific ways of determining the underlying health of the storage hardware?

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• Artifical neural networks height-weight problem

  - by hammid1981

  i plan to use neurodotnet for my phd thesis, but before that i just want to build some small solutions to get used to the dll structure. the first problem that i want to model using backward propagation is height-weight ratio. I have some height and weight data, i want to train my NN so that if i put in some weight then i should get correct height as a output. i have 1 input 1 hidden and 1 output layer. Now here is first of many things i cant get around :) 1. my height data is in form of 1.422, 1.5422 ... etc and the corresponding weight data is 90 95, but the NN takes the input as 0/1 or -1/1 and given the output in the same range. how to address this problem

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