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• Hadoop write directory

  - by FaultyJuggler

  Simple question but reading through documentation and configuration I can't quite seem to figure it out. How do I A) know where hadoop is writing to on the local disk and B) change that For initial testing I setup HDFS on a 20gb linux VM - to it we've added a 500gb networked drive for moving towards prototyping the full system. So now how do I point HDFS at that drive, or do I simply move the home directory/install with some slight change in setup and restart the process?

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• C# :: Checking if a bit is set or not

  - by Manjoor

  Shhow me a very simple one line example in C# to check if a given bit is set in given byte function signature should be like bool IsBitSet(Byte b,byte nPos) { return .....; } The Speed vs

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• Textarea into an array or implode?

  - by Kyle R

  Say I have a text area, user enters information exactly like styled below: Ice cream Chocolate then submits this information, I want to retrieve the information EXACTLY like so: Ice cream, Chocolate Is this the best way to do it: $arr = explode("\n", $var); $arr = implode(",", $arr); When doing it like this, it puts the information out like so: Ice cream , Chocolate Note the space after cream, will a simple trim() fix this?

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• C++ R - tree implementation wanted

  - by Kotti

  Hi, Does anyone know good and simple to use in production code R-tree (actually, any implementations - R*, R+ or PR-tree would be great)? It doesn't matter if it is a template or library implementation, but some implementations that google found look very disappointing... Thanks in advance.

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• Explain Type Classes in Haskell

  - by Tsubasa Gomamoto

  Hi, I am a C++ / Java programmer and the main paradigm I happen to use in everyday programming is OOP. In some thread I read a comment that Type classes are more intuitive in nature than OOP. Can someone explain the concept of type classes in simple words so that an OOP guy like me can understand it?

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• Classes. Whats the point?

  - by Ben Shelock

  I'm fairly new to OOP in PHP, I've made a couple of basic scripts but nothing impressive. All I've really taken from it is that it would probably be easier just make a collection of functions and include them. The structure of classes seems to just confuse what was otherwise a simple process. And in collating everything into a class it doesn't really add any functionality. So I'm clearly missing something. Could someone explain what functionality is added by creating classes

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• Removing HTML from a Java String

  - by Mason

  Is there a good way to remove HTML from a Java string? A simple regex like replaceAll("\\<.*?>","") will work, but things like &amp; wont be converted correctly and non-HTML between the two angle brackets will be removed (ie the .*? in the regex will disappear).

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• Git - how do I view the change history of a file

  - by Richard

  How can I view the change history of an individual file, complete with what has changed ? I have got as far as : git log -- filename which shows me the commit history of the file, but how do I get at the content of each of the changes ? Thanks - I'm trying to make the transition from MS SourceSafe and that used to be a simple right click / show history.

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• Application-wide variables and helpers

  - by Antonio

  Hi: I'm sure this question is fairly simple to answer... is there any way to make variables and helpers available application-wide on the iPhone, without using the Application delegate? Thanks!

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• Regex for Eclipse/Flash Builder File Search for comments?

  - by Brian Bishop

  In Eclipse (and Flash/Flex Builder) you get the option with Ctrl+Shift+F to do a file search and look for a regular expression. Would be a real handy thing to know. I want to find the word negate if it appears in a Flex/java comment like the following: // It was negated because or /* The negate option was.... */ or /** * We have to negate the value */ Any ideas? Will test them out at http://www.regexplanet.com/simple/index.html

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• API to calculate drive distance between 2 US street addresses?

  - by ggonsalv

  Seems simple but users have no internet access. The application will be hosted internally on as Intranet site. The application will be able to make webservice calls to the internet. I tested and tried Mapquest. However all the other providers seems to assume the users are able to access the internet so their API's are javascript based with src tags pointing to internet URL's Any ideas?

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• This recursive function puzzles me, what is going on?

  - by Fred

  I was playing around with recursion and did this simple function. I was assuming that it would print out 9-0 to stdout, but, it prints 0-9. I can't see how that happens at all. int main() { rec(10); return 0; } int rec(int n){ if(n > 0) printf("%d\n", rec(n -1)); return n; }

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• sql error validating the default for column

  - by RealityDysfunction

  I am trying to set the default value for a new column I just added. In properties I am trying to set 'Default Value or Binding' to a simple XML along the lines of: <root><title>Welcome</title><body>Thank you for your time.</body></root> However, when I click away, I get "sql error validating the default for column," I set this value in other numerical columns and it worked fine. What gives?

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• Step by Step validation with jquery validation plugin

  - by Alex

  I know its been asked many times already but no one could come up with solution so far. The idea is to have one form separated into few steps and validate each step on next click of the button. I know jquery validation plugin is offering quite complicated way of doing it with accordion but can anyone come up with a simple solution something like var stepOne = { rules: { fieldname1: "required", fieldname2: "required", } } $("form").validate(stepOne); //onclick hope someone could suggest the best way of doing it. Thanks.

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• Why can't create object of an abstract class?

  - by Gaurav

  Here is a scenario in my mind and I have googled, Binged it a lot but got the answer like "Abstract class has not implemented method so, we cant create the object" "The word 'Abstract' instruct the clr that not to create object of the class" But in a simple class where we have all virtual method, able to create an object??? Also, we can define different access modified to Abstract class constructor like private, protected or public. My search terminated to this question ; Why we can't create object of an Abstract class?

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• .NET immutable object usage best practices? Should I be using them as much as possible?

  - by Daniel

  Say I have a simple object such as class Something { public int SomeInt { get; set; } } I have read that using immutable objects are faster and a better means of using business objects? If this is so, should i strive to make all my objects as such: class ImmutableSomething { public int SomeInt { get { return m_someInt; } } private int m_someInt = 0; public void ChangeSomeInt(int newValue) { m_someInt = newvalue; } } What do you reckon?

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• problem with QMainWindow setCentralWidget and stackedWidget

  - by user63898

  Hello i have gui the i created in the designer , simple one . QMainWIndow that contains stackedWidget , the application starts with stackedWidget index 0 that contains qwebkit widget and after some user flow ,it changes to stackedWidget index 1 that contains QTree widget , to center the first widget i use in the QMainWindow constractor this line of code this-setCentralWidget(ui.webView); but when the application switching to index number 1 im getting exception that is coming from the switching command . why ?

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• L VALUE REQUIRED

  - by hopefulLLl

  can nyone tell me in simple words that what this L value is and why i m coming across the error "L VALUE REQUIRED IN FUNCTION MAIN()"??

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• Check for a valid domain name in a string?

  - by demos

  I am using python and would like a simple api or regex to check for a domain name's validity. By validity I am the syntactical validity and not whether the domain name actually exists on the Internet or not.

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• Set Title in Tab childs

  - by oriharel

  How can I change a title from tab child? I tried a simple setTitle(...) but it won't work. (from the parent tab activity, it does, however...) thanks, Ori

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• C# - Converting a float to an int... and changing the int depending on the remainder

  - by Django Reinhardt

  Hi, this is probably the really newbie question (well, I'm pretty sure it is), but I have a float that's being returned and I need a quick and efficient way of turning it into an int. Pretty simple, but I have an exception. If the remainder of the float is anything other than .0 then I want to increment the int. Some quick examples: Float = 98.0, Int = 98 Float = 98.1, Int = 99 Float = 6.6, Int = 7 etc. Thanks for any help!

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• free, recommendable Tools for data modeling?

  - by Tim

  Hello, are there free, recommendable Tools for data modeling? ERM/ORM Diagrams Creating database models (SQL SERVER 2005) Simple to use like Visio(no license here) Code generation is only a nice to have (VB.Net)

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• word Application.AddIns.Add throws 'Word cannot open this document template'

  - by Vinay B R

  Hi, I have a template document with a simple macro to insert a file into a document. When i try to load this template file using Application.Addins.Add i am getting an error saying 'Word cannot open this document template'. wordApplication.AddIns.Add( %template file path%, ref trueObj ); This works fine on some machines. Also is there any way to make sure that we load the template file as a global Template always.

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• AJAX Calendar extender select month and year

  - by nCdy

  Is it real and how can I think about it. To make so the user will select only the month and year, not date, because he need a period on full month, not some date. here is simple control ... <asp:TextBox ID="TextBox3" runat="server" /> <asp:CalendarExtender ID="TextBox3_CalendarExtender" runat="server" Enabled="True" TargetControlID="TextBox3" />

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• RMagick Rounded Corners

  - by mikeycgto

  Need a simple a way of rounding off an Image. I need the corners to be transparent. This link shows how to do it via command line: http://www.imagemagick.org/Usage/thumbnails/#rounded What I need is the corresponding RMagick\Ruby code... Thanks!

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