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  • Projects with browsable source using dependency injection w/ guice?

    - by André
    I often read about dependency injection and I did research on google and I understand in theory what it can do and how it works, but I'd like to see an actual code base using it (Java/guice would be preferred). Can anyone point me to an open source project, where I can see, how it's really used? I think browsing the code and seeing the whole setup shows me more than the ususal snippets in the introduction articles you find around the web. Thanks in advance!

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  • How to merge many text files data in databse

    - by Mirage
    i have around 100 text files. The files have questions and 3 choices. FIles are like below ab001.txt -- contains question ab001a.txt -- is the first choice ab001b.txt ---is second choice ab001c.txt --- is third choice There are thousnad files like this. now i want to insert them in sql or first may in excel like First columns questions and other three columns as answers First two characters are same for soom files , looks like it signifies osme category so around every 30 questioons have same first charaters Any ideas

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  • Identifying voice as male or female

    - by duder
    I'm not much into audio engineering, so please be easy on me. I'm receiving an audio file as input, and need to detect whether the speaker is male or female. Any ideas how to go about doing this? I'm using php, but am open to using other languages, and don't mind learning a little bit of sound theory as long as the time is proportionate to the task.

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  • Small Command line scripter (like Autocad commands) one line editor

    - by Objectsberg
    Basically I don't know from where to start, I need to add a line script for my application that is not so complicated, just to execute pre-defined commands, for instance: command New Invoice -- create new invoice command customer profile -- open customer form where cust id = CustID command run End-Of-Day - run the end of day process command scr 1020 -- open form id = 1020 How can I start? I have no problem of recommending any third party components (parsers,evaluators,etc..). whats missing is the basic structure no details, just a theory for implementation. Thanks, Objectberg

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  • Why won't my Windows 8 Command line update its path

    - by mawcsco
    I needed to add a new entry to my PATH variable. This is a common activity for me in my job, but I've recently started using Windows 8. I assumed the process would be similar to Windows 7, Vista, XP... Here's my sequence of events: Open System properties (Start- [type "Control Panel"] - Control Panel\System and Security\System - Advanced system settings - Environment Variables) Add the new path to beginning of my USER PATH variable (C:\dev\Java\apache-ant-1.8.4\bin;) Opened a command prompt (Start - [type "command prompt" enter] - [type "path" enter] My new path entry is not available (see attached image and vide). I Duplicated the exact same process on a Windows 7 machine and it worked. EDIT Windows 8 Environment Variables and Command Prompt video EDIT This is definitely not the behavior of Windows 7. Watch this video to see the behavior I expect working in Windows 7. http://youtu.be/95JXY5X0fII EDIT 5/31/2013 So, after much frustration, I wrote a small C# app to test the WM_SETTINGCHANGE event. This code receives the event in both Windows 7 and Windows 8. However, in Windows 8 on my system, I do not get the correct path; but, I do in Windows 7. This could not be reproduced in other Windows 8 systems. Here is the C# code. using System; using Microsoft.Win32; public sealed class App { static void Main() { SystemEvents.UserPreferenceChanging += new UserPreferenceChangingEventHandler(OnUserPreferenceChanging); Console.WriteLine("Waiting for system events."); Console.WriteLine("Press <Enter> to exit."); Console.ReadLine(); } static void OnUserPreferenceChanging(object sender, UserPreferenceChangingEventArgs e) { Console.WriteLine("The user preference is changing. Category={0}", e.Category); Console.WriteLine("path={0}", System.Environment.GetEnvironmentVariable("PATH")); } } OnUserPreferenceChanging is equivalent to WM_SETTINGCHANGE C# program running in Windows 7 (you can see the event come through and it picks up the correct path). C# program running in Windows 8 (you can see the event come through, but the wrong path). There is something about my environment that is precipitating this problem. However, is this a Windows 8 bug?

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  • Is OOP based on any branch of mathematics?

    - by ektrules
    I know relational databases are based on set-theory, functional programming is based on lambda calculus, logic programming is based on logic (of course :)), and now that I think of it; I'm not sure if imperative and generic programming is based on any particular branch of mathematics either.

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  • Where can i find exercises for familiarising OOPS

    - by CrazyBoy123
    Now that i have learned the theory of OOPS in good number of books , and practised a little. Still i am not comfortable when i look into OOPS being applied in some of the Open Source projs. Can someone suggest any problem / solution kind of book , or any resources , that covers OOPS end - end. (C# , Java preferably)

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  • drawing circle without floating point calculation

    - by zaharpopov
    This is common interview question (according to some interview sites) but I can find no normal answers in Internet - some are wrong and some point to complex theory I expect not looked for in interview (like Bressenham algorithm). The question is simple: The circle equation is: x^2 + y^2 = R^2. Given R, draw 0,0-centered circle as best as possible without using any floating point (no trigo, square roots, and so on, only integers)

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  • Getting users LastLogonTime on Live@edu using powershell

    - by Eagles
    I am trying to get a csv file of all users in a Live@edu environment with a LastLogonTime, but I am having some issues here is my script: foreach ($i in (Get-Mailbox -ResultSize unlimited)) { Get-MailboxStatistics -LastLogonTime $i.DistinguishedName | where {$_.LastLogonTime} | select-object MailboxOwnerID,Name,LastLogonTime | export-csv -path "c:\filepath\UserLastLogon.csv" } I get the error: A positional paparameter cannot be found that accepts argument '[email protected],OU=domain.edu,OU=Microsoft Exchange Hosted Organizations,DC=prod,DC=exchangelabs,DC=com'. +Category Info: InvalidArgument: (:) [Get-MailboxStatistics], ParameterBindingException +FullyQualifiedErrorId : PositionalParameterNotFound,Get-MailboxStatistics Any help would be great!

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  • UIWebView comparing current and defined URL's with a loop depending on result

    - by Syleron
    I am trying to compare the current url in webView with a defined url say google.com so in theory.. NSURLRequest *currentRequest = [webView request]; NSURL *currentURL = [currentRequest URL]; would give us our current url... NSString *newurl = @"http://www.google.com"; this would give us the compared to defined url while (!currentURL == newurl) { //do whatever here because currentURL does not equal the newurl } This does not seem to work though.. solutions?

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  • What does =*> mean with regards to context free grammars?

    - by incrediman
    I've been reading a couple books/online references about compiler theory, and keep seeing that particular operator coming up every once in a while (as seen here), specifically when the current topic is context free grammars. What does it mean? As well, how does it differ from =>? Explanations with examples distinguishing => from =*> would be most helpful.

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  • What are the specific uses of these hardware? [closed]

    - by vincentbelkin
    So I'm trying to learn more about databases and information systems. However I need more explanation on the specific purpose of these hardware. I'm not sure if they are servers or what. HP AlphaServer ES47 Tower Tru64 Unix Intel-Based B, Proliant ML350GA Two Intel-Based A Proliant ML570T03 Intel-Based X236 Intel Quad Core Xeon Category B X3500 Poweredge 1400 SC Btw I'm just a college student who wants to know more about these hardware

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  • An O(1) Sort ~~~

    - by FlySwat
    Before you stone me for being a heretic, There is a sort that proclaims to be O(1), called "Bead Sort" (http://en.wikipedia.org/wiki/Bead_sort) , however that is pure theory, when actually applied I found that it was actually O(N * M), which is pretty pathetic. That said, Lets list out some of the fastest sorts, and their best case and worst case speed in Big O notation. ~~ FlySwat ~~

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  • C++ pointer to objects

    - by Tony
    In C++ do you always have initialize a pointer to an object with the new keyword? Or can you just have this too: MyClass *myclass; myclass->DoSomething(); I thought this was a pointer allocated on the stack instead of the heap, but since objects are normally heap allocated, I think my theory is probably faulty?? Please advice.

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  • Why is NULL/0 an illegal memory location for an object?

    - by aioobe
    I understand the purpose of the NULL constant in C/C++, and I understand that it needs to be represented some way internally. My question is: Is there some fundamental reason why the 0-address would be an invalid memory-location for an object in C/C++? Or are we in theory "wasting" one byte of memory due to this reservation?

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  • Google Jam 2009. C. Welcome to Code Jam. Can't understand Dynamic programming

    - by vibneiro
    The original link of the problem is here: https://code.google.com/codejam/contest/90101/dashboard#s=p2&a=2 In simple words we need to find how many times the string S="welcome to code jam" appears as a sub-sequence of given string S, e.g. S="welcome to code jam" T="wweellccoommee to code qps jam" I know the theory but not good at DP in practice. Would you please explain step-by-step process to solve this DP problem on example and why it works?

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  • Event driven programming in perl?

    - by TheGNUGuy
    Hey everyone, I'm trying to make a jabber bot and I am having trouble keeping it running while waiting for messages. How do I get my script to continuously run? I have tried calling a subroutine that has a while loop that I , in theory, have set up to check for any messages and react accordingly but my script isn't behaving that way. Here is my source: http://pastebin.com/03Habbvh

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  • Real life example fo Floating Point error

    - by Rob
    Is there any examples of a company that was burned by floating point data that caused a rounding issue? We're implementing a new system and all the monetary values are stored in floats. I think if i can show actual examples of why this has failed it'll have more weight than the theory of why the values can't be stored properly.

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  • How do I pass an ArrayList to method that takes a collection as an input

    - by Ankur
    I want to pass some ArrayList X into method a(Collection someCol) that takes Collection as an input. How can I do this? I thought an ArrayList was a Collection and thus I should be able to "just do it" but it seems that Collection is an interface and ArrayList implements this interface. Is there something I can do to make this work ... if you understand the theory that would also help me and possibly lots of other people. Thanks

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  • Can I send email after a agent job meets particular condition?

    - by Saaza Khan
    Every night. Am running a job what checks the produc expiration date.but ther products have different managers..for eg.milk comes under manager..vegetables comes under another manager ..etc so these people have different emails..I nee dot know wether it is possible to send a email to each manager when ever the product under their category is about to expire ,since it is runig as a job and in the night ..I am curious to know if I am following a correct way and if so how do I proceed

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  • How can I represent a line of music notes in a way that allows fast insertion at any index?

    - by chairbender
    For "fun", and to learn functional programming, I'm developing a program in Clojure that does algorithmic composition using ideas from this theory of music called "Westergaardian Theory". It generates lines of music (where a line is just a single staff consisting of a sequence of notes, each with pitches and durations). It basically works like this: Start with a line consisting of three notes (the specifics of how these are chosen are not important). Randomly perform one of several "operations" on this line. The operation picks randomly from all pairs of adjacent notes that meet a certain criteria (for each pair, the criteria only depends on the pair and is independent of the other notes in the line). It inserts 1 or several notes (depending on the operation) between the chosen pair. Each operation has its own unique criteria. Continue randomly performing these operations on the line until the line is the desired length. The issue I've run into is that my implementation of this is quite slow, and I suspect it could be made faster. I'm new to Clojure and functional programming in general (though I'm experienced with OO), so I'm hoping someone with more experience can point out if I'm not thinking in a functional paradigm or missing out on some FP technique. My current implementation is that each line is a vector containing maps. Each map has a :note and a :dur. :note's value is a keyword representing a musical note like :A4 or :C#3. :dur's value is a fraction, representing the duration of the note (1 is a whole note, 1/4 is a quarter note, etc...). So, for example, a line representing the C major scale starting on C3 would look like this: [ {:note :C3 :dur 1} {:note :D3 :dur 1} {:note :E3 :dur 1} {:note :F3 :dur 1} {:note :G3 :dur 1} {:note :A4 :dur 1} {:note :B4 :dur 1} ] This is a problematic representation because there's not really a quick way to insert into an arbitrary index of a vector. But insertion is the most frequently performed operation on these lines. My current terrible function for inserting notes into a line basically splits the vector using subvec at the point of insertion, uses conj to join the first part + notes + last part, then uses flatten and vec to make them all be in a one-dimensional vector. For example if I want to insert C3 and D3 into the the C major scale at index 3 (where the F3 is), it would do this (I'll use the note name in place of the :note and :dur maps): (conj [C3 D3 E3] [C3 D3] [F3 G3 A4 B4]), which creates [C3 D3 E3 [C3 D3] [F3 G3 A4 B4]] (vec (flatten previous-vector)) which gives [C3 D3 E3 C3 D3 F3 G3 A4 B4] The run time of that is O(n), AFAIK. I'm looking for a way to make this insertion faster. I've searched for information on Clojure data structures that have fast insertion but haven't found anything that would work. I found "finger trees" but they only allow fast insertion at the start or end of the list. Edit: I split this into two questions. The other part is here.

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