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  • Does the 80/20 rule of time management apply to developers?

    - by Dean
    Jeff's recent article linked to a time management example of the First Fit Decreasing algorithm, which talked about the Pareto principle (or, the 80/20 rule) of time management, that is, that 80% of the work we produce in 20% of our time. Now we've all heard the programmer quote: The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time. But all jokes aside, it is often as if 20% of your code is to do what you want, and the other 80% is to handle exceptions... so does the 80/20 rule really apply to developers? Does anyone have any examples of why it does / does not apply to us?

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  • View Animation (Resizing a Ball)

    - by user270811
    hi, i am trying to do this: 1) user long touches the screen, 2) a circle/ball pops up (centered around the user's finger) and grows in size as long as the user is touching the screen 3) once the user lets go of the finger, the ball (now in its final size) will bounce around. i think i have the bouncing around figure out from the DivideAndConquer example, but i am not sure how to animate the ball's growth. i looked at various view flipper examples such as this: http://www.inter-fuser.com/2009/08/android-animations-3d-flip.html but it seems like view flipper is best for swapping two static pictures. i wasn't able to find a good view animator example other than the flippers. also, i would prefer to use images as opposed to just a circle. can someone point me in the right direction? thanks.

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  • Known "Z notation" applications ?

    - by Amadeus45
    I was just remembering back my university classes and was wondering to know if anyone out here even used the "Z notation" in a professional environment. I honestly must say that it was the single most boring class that I have ever attended in my life. Maybe because of the teacher, but at the time we really all thought it was a big waste of time. I might have been wrong, which is why I'd like to hear you about it. If you are using it or some derived language (Z++), I'd just like to know how is it useful for you. Just curious to know some commonly-known applications of Z or your application. For those who are not familiar : http://staff.washington.edu/jon/z/z-examples.html

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  • PowerShell Script to Find and Replace for all Files with a Specific Extension

    - by Brandon
    I have several configuration files on Windows Server 2008 nested like such: C:\Projects\Project_1\project1.config C:\Projects\Project_2\project2.config In my configuration I need to do a string replace like such: <add key="Environment" value="Dev"/> will become: <add key="Environment" value="Demo"/> I thought about using batch scripting, but there was no good way to do this, and I heard that with PowerShell scripting you can easily perform this. I have found examples of find/replace, but I was hoping for a way that would traverse all folders within my C:\Projects directory and find any files that end with the '.config' extension. When it finds one, I want it to replace my string values. Any good resources to find out how to do this or any PowerShell gurus that can offer some insight?

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  • OpenDACS .Net Framework

    - by Goober
    Scenario As some of you may have heard, OpenDACS is an open source data-access control system for enforcing data usage permissions. DACS comes integrated with the Reuters platform but you can use OpenDACS for extending third-party software. I'm using IE6, I can't embed these links properly. http://thomsonreuters.com/products_services/financial/financial_products/real-time/data_access_control_system https://customers.reuters.com/developer/Kits/OpenDACS/opendacs.aspx Question Has anyone used OpenDACS at all? I'm quite interested in it but I have no idea where to start. Ideally some examples would be fantastic, or a startup guide. Thoughts I use C# heavily and am looking to extend a C# application with DACS. I understand that there is currently no C# API, however I've heard that the SFC-COM Edition can used with the .Net/COM interoperability layer Help greatly appreciated. Cheers.

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  • State pattern: Why doesn't the context class implement or inherit the State abstract interface/class

    - by Ricket
    I'm reading about the State pattern. I have only just begun, so of course I begin by reading the entire Wikipedia article on it. I noticed that both of the examples in the article have some base abstract class or Java interface for a generic State's methods/functions. Then there are some states which inherit from the base and implement those methods/functions in different ways. Then there's a Context class which has a private member of type State and which, at any time, can be equal to an instance of one of the implementations. That context class also implements the same methods, and passes them onto the current state instance, and then has an additional method to change the state (or depending on design I understand the change of state could be a reaction to one of the implemented methods). Why doesn't this context class specifically "extend" or "implement" the generic State base class/interface?

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  • WCF Advanced Books

    - by hgulyan
    Hi, I've read all questions like mine and found a few good links. My question is about architect of WCF, how it is designed, how is generated reference.vb, wsdl and xsd files. How can I do that manually, some good examples of WCF Systems (mostly on desktop applications over TCP). I'd like a book or documentation or anything else, that can give me advanced knowledge of WCF. What do you think of this book http://www.amazon.com/Professional-WCF-Windows-Communication-Foundation/dp/0470563141/ref=sr_1_5?ie=UTF8&s=books&qid=1269425390&sr=8-5 ? And generally is there any source that would give me this all or the only way is practising, trying, looking in all that generated files and reading documentations? Thank you.

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  • Where should I put WPF specific code when using MVVM?

    - by Surfbutler
    I'm just getting up to speed on MVVM, but all the examples I've seen so far are binding View controls to simple non-WPF specific data types such as strings and ints. However in our app I want to be able to set a button's border brush based on a number in the Model. At the moment, I translate the number into a brush in the ViewModel to keep the View XAML only, but is that right? I don't like putting WPF specific code in the ViewModel, but equally I don't like the idea of putting code-behind on my View panel. Which is the best way? Thanks

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  • WPF passing the Int argument to a data object provider method

    - by SAD
    Hi, I'm trying to produce a master/detail datagrid view. I'm using object data providers. Now I have seen many examples when the argument of a method for returning the records for the detail view is a string, like in this example: <!-- the orders datasource --> <ObjectDataProvider x:Key="OrdersDataProvider" ObjectType="{x:Type local:OrdersDataProvider}"/> <ObjectDataProvider x:Key="Orders" MethodName="GetOrdersByCustomer" ObjectInstance="{StaticResource OrdersDataProvider}" > <ObjectDataProvider.MethodParameters> <x:Static Member="system:String.Empty"/> </ObjectDataProvider.MethodParameters> </ObjectDataProvider> But in my case, the argument that I want to pass is the int ID not the string. Can I still somehow use the object data provider to return all the records from the database for the detail view if the argument passed to a method has to be an int? How could it be implemented in MVVM? Thanks a lot for any advice1

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  • pgf/tikz: String Symbols as Input Coordinates

    - by red_lynx
    Hi all, I'm new to pgf so i was trying out some examples from the pgfplot manual. One example is especially relevant for my current task but, alas, it would not compile. Here is the code: \documentclass[11pt]{article} \usepackage{tikz} \usepackage{pgfplots} \begin{document} \begin{tikzpicture} \begin{axis}[symbolic x coords={a,b,c,d,e,f,g,h,i}] \addplot+[smooth] coordinates { (a,42) (b,50) (c,80) (f,60) (g,62) (i,90)}; \end{axis} \end{tikzpicture} \end{document} the compiler quits with the following error: ! Package PGF Math Error: Could not parse input 'a' as a floating point number, sorry. The unreadable part was near 'a'.. I have no clue how to correct this behavior. Other plots (smooth, scatter, bar), which contain only numerical data compile fine. Could anybody give me a hint? Cheers K.

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  • What does the "build-essential" & "build-dep" Terminal commands mean & do in Linux based operating s

    - by Adam Siddhi
    Hi. I am researching how to install Ruby 1.9.1 in Xubuntu 10.04 and I came across the command build-essential and build-dep multiple times. Sometimes it is followed by packages and sometimes it is both preceded and post-ceded by packages. The 2 examples I am looking at are: sudo apt-get install build-essential zlib1g zlib1g-dev zlibc libruby1.9 libxml2 libxml2-dev libxslt-dev sudo apt-get build-dep ruby1.9 and sudo apt-get install ruby irb ri rdoc ruby1.8-dev libzlib-ruby libyaml-ruby libreadline-ruby libncurses-ruby libcurses-ruby libruby libruby-extras libfcgi-ruby1.8 build-essential libopenssl-ruby libdbm-ruby libdbi-ruby libdbd-sqlite3-ruby sqlite3 libsqlite3-dev libsqlite3-ruby libxml-ruby libxml2-dev Thanks :adam

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  • Tiling solution for the iPhone that can handle infinite # of tiles

    - by rickharrison
    I have been looking at ways to implement a tiling solution on the iPhone/iPad similar to something like Google Maps. I have looked at examples of how to implement a CATiledLayer into a view that is inside a UIScrollView. Then when you scroll the view, the tiles request the new data to be shown. However, this seems to work when you have a finite view size (ie: 3000x3000). However, how could I work this into a tiling solution for much larger sizes. Basically, I want to be able to show data as needed for tiles as large as I can. Can I somehow use CATiledLayer to do this? Any direction would be greatly appreciated.

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  • Programmatically adding a trusted cert in Java

    - by directedition
    I use SSL to communicate between two components written in Java. I can't use a CA, so I have to self-sign everything. Unfortunately, this means that when I try to handshake, I get a SunCertPathBuilderException. I can create my own X509TrustManager that just trusts everything, but that sort of defeats the purpose of having a signed cert. I would like, when first making the connection, to prompt the user with "SSL handshake with invalid cert. Add cert to store?" or something so they could have it added for them to their certificate store, like web browsers do at sites with invalid certs. I can find plenty of examples online of adding a cert to the store through the commandline, but I can't figure out how to do it programmatically. Is there a way to do this?

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  • Help on writing your own javax.swing.text.Document

    - by DJClayworth
    I'm writing a Java TextComponent where the underlying document has some structure. It is very short, basically one line. I need to be able to override the response to inserting or deleting characters in some parts of the document. My initial approach was to implement javax.swing.text.Document, but this seems to involve developing many associated classes (Element, EditorKit, View) and there don't seem to be many examples or tutorials on how to do this. There are plenty on using the pre-defined implementations. Can anyone point me at tutorials or other aids for simple implementations of Document and what other classes I need to create to make this work.

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  • In Log4Net XML configuration is Priority the same thing as Level?

    - by Michael Levy
    I inherited some code that uses the priority element under the root in its xml configuraiton. This is just like the example at http://iserialized.com/log4net-for-noobs/ which shows: <root> <priority value="ALL" /> <appender-ref ref="LogFileAppender" /> <appender-ref ref="ConsoleAppender"/> </root> However, the log4net configuration examples at http://logging.apache.org/log4net/release/manual/configuration.html always show it using the level element: <root> <level value="DEBUG" /> <appender-ref ref="A1" /> </root> In this type of configuration is <priority> the same as <level> ? Can someone point me to somewhere in the docs where this is explained?

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  • URL Friendly regular expression

    - by Caesar
    Can anyone help me with regular expression for this: basically I have a search form and users type in whatever keywords they want to search and when a search button is clicked, the search keyword is appended to the url (see examples below). Note the keyword may contain any character. Example 1 Search key: whatever you want URL: www.example.com/search/whatever+you+want/ Example 2 Search key: oh boy! what's going on? URL: www.example.com/search/oh+boy!+what's+goin+on%3F What regular expression can I use to capture all characters in the ASCII table between 32 to 126?

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  • google map in android emulator problem

    - by Hiren Dabhi
    Hi, instead of it displaying google map it only display grid view. - i followed all the steps that are in following sites examples http://mobiforge.com/developing/story/using-google-maps-android or http://www.androidpeople.com/android-google-map-application-example/ - i also set the proxy server run -- run configuration.. -- myapplication--target tab-- additional command line -http-proxy http://192.68.100.101:8080/ Still i am not getting the google map. NOTE: i tried this in my mobile it works fine but not display in android emulator. where i made mistake plz help me. thank in advance

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  • Usability standards when combining AJAX and regular POST-based form saves

    - by mcrider
    I'm working on a project where on certain pages (e.g. settings pages) we combine AJAX and regular fill-out-the-form-then-submit POST based operations. I'm curious if anyone has advice on improving the usability of such a page. One of my ideas is that when the user enters/modifies a value in a non-ajax part of the page, some sort of div would appear (say in a fashion similar to Growl) indicating that the user needs to save by pressing 'Submit' at the bottom of the page (and possibly putting up a modal dialog if the user navigates away from the page before saving, though that might be a bit too intrusive). I'm sure this type of interaction exists, but I can't find any examples.

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  • Convert CSV file to XML

    - by Soeren
    I need to Convert a CSV into an XML document. The examples I have seen so far, all show how to do this with a fixed number of columns in the CSV. I have this so far, using LINQ: String[] File = File.ReadAllLines(@"C:\text.csv"); String xml = ""; XElement top = new XElement("TopElement", from items in File let fields = items.Split(';') select new XElement("Item", new XElement("Column1", fields[0]), new XElement("Column2", fields[1]), new XElement("Column3", fields[2]), new XElement("Column4", fields[3]), new XElement("Column5", fields[4]) ) ); File.WriteAllText(@"C:\xmlout.xml", xml + top.ToString()); This is for a fixed amount of columns, but my .CSV has a different number of columns on each line. How would you fit some sort of loop into this, depending on how many words (columns) there are in each line of the .CSV? Thnx

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  • Multline Text in a WPF Button through C#

    - by Paul
    How do I get multi-line text on a WPF Button using only C#? I have seen examples of using <LineBreak/> in XAML, but my buttons are created completely programmatically in C#. The number and labels on the buttons correspond to values in the domain model, so I don't think I can use XAML to specify this. I have tried the naive approach below, but it does not work. Button b = new Button(); b.Content = "Two\nLines"; or b.Content = "Two\r\nLines"; In either case, all i see is the first line ("Two") of the text.

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  • Accomplishing boost::shared_from_this() in constructor via boost::shared_from_raw(this)

    - by Kyle
    Googling and poking around the boost code, it appears that it's now possible to construct a shared_ptr to this in a constructor, by inheriting from enable_shared_from_raw and calling shared_from_raw(this) Is there any documentation or examples of this? I'm finding nothing with google. Why am I not finding any useful buzz on this on google? I would have thought using shared_from_this in a constructor would be a hot/desirable item. Should I be inheriting from both enable_shared_from_raw and enable_shared_from_this, and restricting my usage of enable_shared_from_raw when I have to? If so, why? Is there a performance hit with shared_from_raw?

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  • Drawbacks with reading and writing a big file to or from disk at once instead of small chunks?

    - by Johann Gerell
    I work mainly on Windows and Windows CE based systems, where CreateFile, ReadFile and WriteFile are the work horses, no matter if I'm in native Win32 land or in managed .Net land. I have so far never had any obvious problem writing or reading big files in one chunk, as opposed to looping until several smaller chunks are processed. I usually delegate the IO work to a background thread that notifies me when it's done. But looking at file IO tutorials or "textbook examples", I often find the "loop with small chunks" used without any explanation of why it's used instead of the more obvious (I dare to say!) "do it all at once". Are there any drawbacks to the way I do that I haven't understood?

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  • C++ Microsoft SAPI: How to set Windows text-to-speech output to a memory buffer?

    - by Vladimir
    Hi all, I have been trying to figure out how to "speak" a text into a memory buffer using Windows SAPI 5.1 but so far no success, even though it seems it should be quite simple. There is an example of streaming the synthesized speech into a .wav file, but no examples of how to stream it to a memory buffer. In the end I need to have the synthesized speech in a char* array in 16 kHz 16-bit little-endian PCM format. Currently I create a temp .wav file, redirect speech output there, then read it, but it seems to be a rather stupid solution. Anyone knows how to do that? Thanks!

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  • Is it possible to programmatically switch error log providers with ELMAH?

    - by Ralph Lavelle
    Is it possible to switch from using the XML provider to SQL Server using ELMAH? I need to investigate this option because of the fallibility of our SQL Server where our ELMAH errors are stored. I want to be able to fail gracefully and continue logging to XML if the server fails. I can see that programmatic connection string switching is possible, and I see that ELMAH Issue 149 announces the programmatic configuration of default error log, but I can't actually see any code examples anywhere, so I'm not too sure if this is possible. I'm guessing it is, in which case does anyone know for sure? My question is similar to this one, except that I want to try and log errors to SQL Server, and if that fails switch to XML, not log to all stores all the time.

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  • Can I add custom methods/attributes to built-in Python types?

    - by sfjedi
    For example—say I want to add a helloWorld() method to Python's dict type. Can I do this? JavaScript has a prototype object that behaves this way. Maybe it's bad design and I should subclass the dict object, but then it only works on the subclasses and I want it to work on any and all future dictionaries. Here's how it would go down in JavaScript: String.prototype.hello = function() { alert("Hello, " + this + "!"); } "Jed".hello() //alerts "Hello, Jed!" Here's a useful link with more examples— http://www.javascriptkit.com/javatutors/proto3.shtml

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