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  • What the difference between a namespace and a module in F#?

    - by Dave Berk
    I've just started learning F# (with little prior experience with .NET) so forgive me for what is probably a very simple question: What the difference between a namespace and a module in F#? Thanks Dave Edit: Thanks for the answer Brian. That's what I wanted to know. Just a clarification: can you also open a namespace as well (similar to C# using statement)?

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  • Emacs braces indentation

    - by Zurahn
    I can't for the life of me find any answer to this through conventional Internet means, so I'm hoping for some help. Emacs for me right now tends to do indentation on braces as follows: if( ... ) { } Which I find incredibly irritating; I've never even seen this behaviour anywhere else. At any rate, the behaviour I'm expecting is, if( ... ) { } If anyone knows how to modify this, it'd be greatly appreciated.

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  • Hidden Features of Erlang

    - by pageman
    In the spirit of: Hidden Features of C# Hidden Features of Java Hidden Features of ASP.NET Hidden Features of Python Hidden Features of HTML and other Hidden Features questions What are the hidden features of Erlang that every Erlang developer should be aware of? One hidden feature per answer, please.

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  • iPhone SDK - Comparing characters in string

    - by Karl Daniel
    Basically what I'm trying to do is compare 2 strings one from a plist and one from the user's input. I use a while loop to step through each character and compare it and if true then I increase an integer then once the loop has finished I work out the percentage correct / similarity of the plist answer and the user's answer. I seem to be having a problem however as the only return I'm getting is 0. Below is the code I'm using... The code below is all functioning and the question no longer requires answering... Working code... answerLength = boxAnswer.length; //Gets number of characters of first string. plistLength = plistAnswer.length; //Gets number of characters of second string. characterRange = 0; //Sets the variable for which character to look at. charactersCorrect = 0; //Sets the variable of number of matching characters. unichar answerCharacter; //Declares a unichar for the first string. unichar plistCharacter; //Declares a unichar for the second string. while (answerLength > 0 && plistLength > 0) { answerCharacter = [boxAnswer characterAtIndex:characterRange]; //Gets character of first string at the index of the range integer. plistCharacter = [plistAnswer characterAtIndex:characterRange]; //Gets character of second string at the index of the range integer. answerLength--; //Reduces number of characters left to compare. plistLength--; characterRange++; //Increases integer to tell it to look at next character in string. if (answerCharacter == plistCharacter) { //Checks to see if character of first string and character of second string match. charactersCorrect++; //If true increases the number correct. } } //Works out percentage of matching characters out of the total string. totalChar = plistAnswer.length; totalPercentage = (charactersCorrect/totalChar)*100; percentageCorrect.text = [NSString stringWithFormat:@"%i%%",totalPercentage]; Variable Declarations... int answerLength; int plistLength; int characterRange; double totalChar; double charactersCorrect; int totalPercentage;

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  • Accessing the Private Constructor

    - by harigm
    I am java developer, went for an interview. I have been asked a question about the Private constructor 1) Can I access a Private Constructor of a Class and Instantiate the class. I was thinking and gave the answer directly--- "NO" But its wrong, can any one help Why NO? and How we can achieve this

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  • Correlated SQL Join Query from multiple tables

    - by SooDesuNe
    I have two tables like the ones below. I need to find what exchangeRate was in effect at the dateOfPurchase. I've tried some correlated sub queries, but I'm having difficulty getting the correlated record to be used in the sub queries. I expect a solution will need to follow this basic outline: SELECT only the exchangeRates for the applicable countryCode From 1. SELECT the newest exchangeRate less than the dateOfPurchase Fill in the query table with all the fields from 2. and the purchasesTable. My Tables: purchasesTable: > dateOfPurchase | costOfPurchase | countryOfPurchase > 29-March-2010 | 20.00 | EUR > 29-March-2010 | 3000 | JPN > 30-March-2010 | 50.00 | EUR > 30-March-2010 | 3000 | JPN > 30-March-2010 | 2000 | JPN > 31-March-2010 | 100.00 | EUR > 31-March-2010 | 125.00 | EUR > 31-March-2010 | 2000 | JPN > 31-March-2010 | 2400 | JPN costOfPurchase is in whatever the local currency is for a given countryCode exchangeRateTable > effectiveDate | countryCode | exchangeRate > 29-March-2010 | JPN | 90 > 29-March-2010 | EUR | 1.75 > 30-March-2010 | JPN | 92 > 31-March-2010 | JPN | 91 The results of the query that I'm looking for: > dateOfPurchase | costOfPurchase | countryOfPurchase | exchangeRate > 29-March-2010 | 20.00 | EUR | 1.75 > 29-March-2010 | 3000 | JPN | 90 > 30-March-2010 | 50.00 | EUR | 1.75 > 30-March-2010 | 3000 | JPN | 92 > 30-March-2010 | 2000 | JPN | 92 > 31-March-2010 | 100.00 | EUR | 1.75 > 31-March-2010 | 125.00 | EUR | 1.75 > 31-March-2010 | 2000 | JPN | 91 > 31-March-2010 | 2400 | JPN | 91 So for example in the results, the exchange rate, in effect for EUR on 31-March was 1.75. I'm using Access, but a MySQL answer would be fine too. UPDATE: Modification to Allan's answer: SELECT dateOfPurchase, costOfPurchase, countryOfPurchase, exchangeRate FROM purchasesTable p LEFT OUTER JOIN (SELECT e1.exchangeRate, e1.countryCode, e1.effectiveDate, min(e2.effectiveDate) AS enddate FROM exchangeRateTable e1 LEFT OUTER JOIN exchangeRateTable e2 ON e1.effectiveDate < e2.effectiveDate AND e1.countryCode = e2.countryCode GROUP BY e1.exchangeRate, e1.countryCode, e1.effectiveDate) e ON p.dateOfPurchase >= e.effectiveDate AND (p.dateOfPurchase < e.enddate OR e.enddate is null) AND p.countryOfPurchase = e.countryCode I had to make a couple small changes.

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  • Launching a Youtube video with Dashcode

    - by Nick
    Hi! I've run into an issue and have been unable to find documentation to answer my question. I was hoping someone could help... Basically, I'm making a iPhone Web App which has a button which needs to link to a Youtube video. I'd like to press the button and have the video load in the Youtube app on the iPhone. I cannot figure out how to do this. Help please?! Thanks

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  • FileMaker Pro 10 and xDBC ODBC Plugin

    - by LeeKey
    Has anyone got a ODBC data source setup for FileMaker Pro 10 on Windows? The documentation that ships with FileMaker Pro 10 does not make sense as it is saying to click on a set-up file that does not exist. None of the forums are providing an answer either.

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  • Getter and Setter - POJO object - Problem with input data in Struts2

    - by andreimladin
    I have a problem with setter and getter method in struts2. I have a form : ... + all input fields of job/ and action: (addJob is mapped at this action) public class InsertJobAction extends ActionSupport{ ... private Job job = null; public String execute(){ jobService.insert(job); //here job is not null; that is ok } getter and setter for job } this action works correctly; I have a similar form and action, but the input fields from thisform are less than first form; The problem is here: in execute() of the second action job is null. Why?? Does depend it of fields noumber ?? I have 2 constructors in my Job class one with no params, and one with all params for every field of class; I made debug with Log4j ...and in first case there arrives in Job constructor in the second not. Why??When it calls constructor??? When are called the setter and getter methodsb, before or after execute() method??? And when i have a form with input data?? Are called setter methods before execute() method? I'm very confusely because in a case it works without problems, but in the second case it doesn't Thanks, Andrew

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  • Cost of exception handlers in Python

    - by Thilo
    In another question, the accepted answer suggested replacing a (very cheap) if statement in Python code with a try/except block to improve performance. Coding style issues aside, and assuming that the exception is never triggered, how much difference does it make (performance-wise) to have an exception handler, versus not having one, versus having a compare-to-zero if-statement?

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  • nokogiri xml unescape

    - by user296507
    hi, i'm just trying out nokogiri xml builder, but am having some problem tying to unescape the content. have been spending a bit of time googgling but so far can't find the answer. any help would be greatly appreciated. #build xml docoument builder = Nokogiri::XML::Builder.new do |xml| xml.root{ xml.node { xml.value "text1 & text2" } } end puts builder.to_xml output i'm get is "text1 &amp text2" but i want it to be "text1 & text2"

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  • Palindrome Golf

    - by Claudiu
    The goal: Any language. The smallest function which will return whether a string is a palindrome. Here is mine in Python: R=lambda s:all(a==b for a,b in zip(s,reversed(s))) 50 characters. The accepted answer will be the current smallest one - this will change as smaller ones are found. Please specify the language your code is in.

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  • Will Windows Mobile 7 Support Multitasking third party apps

    - by Christopher Edwards
    Obviously it's early days, I do not know whether this is information that is in the public domain or not yet, but... I have trawled through some of this site - http://www.windowsphone7series.com/ but I can't seem to find the answer. Specifically will I be able to write an app on the phone that updates the cloud with the phones current GPS position in the background even when other apps are running in the foreground.

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  • Java GUI Overlay

    - by seurimas
    Hey, I want to make an little window like the sort of thing used by Teamspeak/Ventrillo or Steam/xFire where a window can be shown while still in a fullscreen game using Java. There was a similar question/answer ("How to create an overlay window in Java?") but that doesn't work for the particular game (EVE) whereas the previously mentioned overlays work just fine. What's the missing element? Or is it an entirely different method?

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  • Is there a Pac-Man-like character in ASCII or Unicode?

    - by Ricket
    Simple question: is there a character that looks either like Pac-Man, or like the ghost in Pac-Man? With Google's recent Pac-Man logo, everyone should know what these look like, but in case you don't here are some sample images: If you answer "no" please provide a little more proof that you actually searched all unicode characters...

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  • interview questions for a 7 year Exp Guy?

    - by harigm
    What kind of approach I(5 Years Exp In Java J2ee Platform) need to follow to interview 8 years exp Guy in Java and J2ee technology. I am asking all the basic questions, where he is able to answer, if he is atleast the bookish knowledge. I want to ask some thing different where we can check his actual skills in technical. Can any one help me with some thoughts where i can use to get some good and technical challenging questions to ask?

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  • Silverlight IDE for latest version (May 2010)

    - by lexu
    In 2008 Artur Carvalho asked for an Alternative IDE for Silverlight and was told to look at Visual Studio Express. Is that still the valid answer in 2010 or are there other IDEs one should consider (cost/ OS it runs on / stability)? I'm trying to get a feel for silverlight development before commiting cash. So I don't need enterprize level tools or a license to distribute .. Would MonoDevelop and Moonlight be an option?

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  • Is it possible to use xib file in cocos2d

    - by iPhone Fun
    Hi all, I am creating application in cocos2d, but one thing I would like to know is it possible to use xib file in cocs2d as we are using in simple iPhone application creation? If yes then how to make call to such xib files, can any one tell me the answer, is is possible or not? Thanks in advance.

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  • Show Hint Tip of a truncated WPF ListBox Item

    - by vbnc141
    Hi, Been searching all over but could not find the answer I am looking for; perhaps I'm not using the correct search term. Anyways, my question is whether there is a property on the WPF ListBox control which I can set that will automatically display the full text of a truncated list item into a Hint Tip? For example, with some WinForm list-container controls, the Hint Tip only appears when the mouse is hovered over a list item that is truncated.

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