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• jQuery jPicker users: hexadecimal returns 8 digit value?

  - by Scott B

  I've just about got the jPicker script working flawlessly in my app. However, the value it returns contains 8 digits. Example: 212ebcff Is there a preset variable that forces jPicker to return a 6 digit hex value?

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• What's the Ruby equivalent of Python's output[:-1]?

  - by Thierry Lam

  In Python, if I want to get the first n characters of a string minus the last character, I do: output = 'stackoverflow' print output[:-1] I can do the above in Ruby with: output = 'stackoverflow' output.reverse[1..output.length] Is there another way to perform this action in Ruby?

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• .Net Process keep command window open

  - by msarchet

  right now I am working on a tool that does a lot of work via the Process object through the command line. So there are times when I want the command window to not show up and times when I want it to stay open so that the user can see what happened, possibly respond with the appropriate input. Dim pro As New Process pro.StartInfo.WorkingDirectory = path pro.StartInfo.Arguments = command pro.StartInfo.FileName = "hg" pro.StartInfo.RedirectStandardOutput = True If command.Contains("-q") Then pro.StartInfo.UseShellExecute = False pro.StartInfo.CreateNoWindow = True pro.StartInfo.WindowStyle = ProcessWindowStyle.Hidden End If pro.Start() pro.WaitForExit() Return pro.StandardOutput.ReadToEnd The flag that I am checking in the command is for a -q if it doesn't contain this I would like to show the command prompt to the user and wait for them to close it. Is this possible and if so what am I missing?

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• ASP.Net Error - Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.

  - by xtrabits

  I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'. This is the code I'm using Dim str As String = String.Empty If (Session("Brief") IsNot Nothing) Then Dim dt As DataTable = Session("Brief") If (dt.Rows.Count > 0) Then For Each dr As DataRow In dt.Rows If (str.Length > 0) Then str += "," str += dr("talentID").ToString() Next End If End If Return str Thanks

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• Returning PHP Multi-Dimension Array to Javascript/AJAX

  - by GregH

  My understanding is that in order to return a complex PHP variable to Javascript, it should be done via AJAX and json_encode. Could somebody give me an actual example (both PHP and Javascript code) of this? Lets say we have the two-dim array in PHP: $twoDArr = array( array('Greg', 44, 'Owner'), array('Joe', 23, 'Renter'), array('Susan', 39, 'Owner'), array('John', 32, 'Renter) ); How would we return this to an analogous two dimensional array in javascript using json_encode?

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• Simple Properties in Objective-C Classes

  - by tarnfeld

  Hey, I've bene working with Objective-C for a while now, and so far I have never really needed to craft my own classes, properly. I am a bit confused with the two arguments you can give the @property(a, b) declaration in a header file. When creating outlets to Interface Builder I usually do @property(nonatomic, retain) but I have no idea what this means. I'm writing a simple class which has a set of properties which will be set from the outside, like [instance setName:@"Bla Bla Bla"]; or I guess like instance.name = @"Bla@" but I would rather the first option. How would I declare this kind of property on a class? Thanks in advanced! Sorry for the n00bish question :-)

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• Error after installing scala plugin of netbeans

  - by ghedas

  I installed the scala plugin on my netbeans and followed the instruction of this page: http://wiki.netbeans.org/Scala68v1#Scala_Plugins_for_NetBeans_6.8_v1.x_.28RC2.29 but after it completed correctly step by step, when I make an empty project (Hello world!), the project has an error! The empty project is here: package scalaapplication1 object Main { /** * @param args the command line arguments */ def main(args: Array[String]): Unit = { println("Hello, world!") } } and the console error report is: ...\NetBeansProjects\ScalaApplication2\nbproject\build-impl.xml:403: The following error occurred while executing this line: ...\NetBeansProjects\ScalaApplication2\nbproject\build-impl.xml:236: scalac doesn't support the "fork" attribute Is there any suggestion about it?!

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• C# out parameter value passing..

  - by Pandiya Chendur

  I am using contactsreader.dll to import my gmail contacts... One of my method has out parameter... I am doing this, Gmail gm = new Gmail(); DataTable dt = new DataTable(); string strerr; gm.GetContacts("[email protected]", "******", true, dt,strerr); // It gives invalid arguments error.. and my gmail class has, public void GetContacts(string strUserName, string strPassword,out bool boolIsOK, out DataTable dtContatct, out string strError); Am i passing the correct values for out parameters...

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• Software Engineering Papers

  - by kunjaan

  Please recommend me software engineering/methodology/practices paper. So far I have enjoyed: 1968 Dijkstra : Go To Statement Considered Harmful Nikalus Wirth : Program Development by Stepwise Refinement 1971 David Parnas : Information Distribution Aspects of Design Methodology 1972 Liskov : Design Methodology for Reliable Software Systems Extensible Language : Schuman and P Jourrand R. Balzer Structured Programming : Dahl - Hierarchical Program StructuresImplementation Patterns 1971 Jim Morris Protection in Programming Languages 1973 Bill Wulf and Mary Shaw Global Variable Considered Harmful 1974 : Lisko and Zilles ADTs

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• Converting F# Quotations into LINQ Expressions

  - by forki23

  Hi, I can convert a quotation of type Expr<'a -> 'b> to a Linq expression via the following snippet: /// Converts a F# Expression to a LINQ Lambda let toLambda (exp:Expr) = let linq = exp.ToLinqExpression() :?> MethodCallExpression linq.Arguments.[0] :?> LambdaExpression /// Converts a Lambda quotation into a Linq Lamba Expression with 1 parameter let ToLinq (exp : Expr<'a -> 'b>) = let lambda = toLambda exp Expression.Lambda<Func<'a, 'b>>(lambda.Body, lambda.Parameters) Now I want to convert a quotation of type Expr<'a * 'b -> 'c> or maybe even Expr<'a -> 'b -> 'c> to a Linq Lambda Expression of type Expression<Func<'a,'b'c>>. How can I do this? Regards, forki

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• How can I rename a VB6 executable?

  - by parsley72

  I'm trying to automate a VB6 build where different apps are built from the same source by: 1. Changing "Conditional Compilation Arguments". 2. "Make Project" to a different executable name. I can do part of this on the command line: VB6.EXE /m Project.VBP /d BUILD_OTHER_APP=1 but the executable still has the name "Project.exe". If I rename the .EXE it stops working (doesn't seem to run). VB6 doesn't seem to have a command line option to set the executable name and I can't get round this problem with renaming. I'm using VB6 on Win7 32-bit.

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• Reducing Integer Fractions Algorithm - Solution Explanation?

  - by Andrew Tomazos - Fathomling

  This is a followup to this problem: Reducing Integer Fractions Algorithm Following is a solution to the problem from a grandmaster: #include <cstdio> #include <algorithm> #include <functional> using namespace std; const int MAXN = 100100; const int MAXP = 10001000; int p[MAXP]; void init() { for (int i = 2; i < MAXP; ++i) { if (p[i] == 0) { for (int j = i; j < MAXP; j += i) { p[j] = i; } } } } void f(int n, vector<int>& a, vector<int>& x) { a.resize(n); vector<int>(MAXP, 0).swap(x); for (int i = 0; i < n; ++i) { scanf("%d", &a[i]); for (int j = a[i]; j > 1; j /= p[j]) { ++x[p[j]]; } } } void g(const vector<int>& v, vector<int> w) { for (int i: v) { for (int j = i; j > 1; j /= p[j]) { if (w[p[j]] > 0) { --w[p[j]]; i /= p[j]; } } printf("%d ", i); } puts(""); } int main() { int n, m; vector<int> a, b, x, y, z; init(); scanf("%d%d", &n, &m); f(n, a, x); f(m, b, y); printf("%d %d\n", n, m); transform(x.begin(), x.end(), y.begin(), insert_iterator<vector<int> >(z, z.end()), [](int a, int b) { return min(a, b); }); g(a, z); g(b, z); return 0; } It isn't clear to me how it works. Can anyone explain it? The equivilance is as follows: a is the numerator vector of length n b is the denominator vector of length m

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• Pythonic reading from config files

  - by Adam Matan

  Hi, I have a python class which reads a config file using ConfigParser: Config file: [geography] Xmin=6.6 Xmax=18.6 Ymin=36.6 YMax=47.1 Python code: class Slicer: def __init__(self, config_file_name): config = ConfigParser.ConfigParser() config.read(config_file_name) # Rad the lines from the file self.x_min = config.getfloat('geography', 'xmin') self.x_max = config.getfloat('geography', 'xmax') self.y_min = config.getfloat('geography', 'ymin') self.y_max = config.getfloat('geography', 'ymax') I feel that the last four lines are repetitive, and should somehow be compressed to one Pythonic line that would create a self.item variable for each item in the section. Any ideas? Adam

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• PHP SAX parser for HTML?

  - by Daniel

  Hi. I need HTML SAX (not DOM!) parser for PHP able to process even invalid HTML code. The reason i need it is to filter user entered HTML (remove all attributes and tags except allowed ones) and truncate HTML content to specified length. Any ideas?

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• Supplying a callback to Jeditable

  - by pjmorse

  Summary: When I try supplying a onsubmit or onreset callback to Jeditable, I get Object [function] has no method 'apply' errors. How I got here: I've been working on a rails plugin to supply Jeditable and jWYSIWYG for in-place WYSIWYG editing. Development is driven by a Rails project I'm working on which asks for specific functions. One of the options I added was the ability to trigger Jeditable's edit mode using a button instead of clicking on the editable text itself, following the pattern suggested in this answer. The next step, though, is to hide the button while in edit mode, and reveal it again when leaving edit mode. The hide is easy enough; I just added a line to the triggering function which sends .toggle() to the button. Reveal is trickier. I figure I need to .toggle() again on submit or cancel, and helpfully, Jeditable offers onsubmit and onreset callbacks. However, when I try using those callbacks, I get this Object [something] has no method 'apply' errors. What I'm trying: Because this is in the context of a Rails helper, the actual mechanics are a little more involved than this, but the upshot is that I'm trying to follow this pattern, handing Jeditable this in the args: "onsubmit":"showTrigger", and then including this script: function showTrigger(settings, original) { $(".edit_trigger[id='element_id']").toggle(); } However, on submitting changes or canceling an edit, I get the error Object showTrigger has no method 'apply' ...as described above. I also tried sending in a function directly as the "onsubmit" argument (i.e. "onsubmit": "function(settings, original){$(\".edit_trigger[id='element_id']\").toggle();}" and then I just get Object function(settings, original){$(\".edit_trigger[id='element_id']\").toggle();} has no method 'apply' instead. There must be something wrong with how I'm handing in this callback. Any ideas? ETA: This answer suggests to me that somehow I'm providing a string to Jeditable when it expects a function instead. However, because I'm working within the context of a Rails helper, I'm not at all sure how to fix that - the "showTrigger" bit is set as a Ruby variable in the helper, and although window.showTrigger() is defined when the window is loaded, I don't know how to designate that function within a Ruby variable such that it will be recognized as a function at page load time.

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• Ab Initio - Formatting a number in Left alignment

  - by Veera

  I have a requirement in Ab Initio to format a number in left alignment. I shouldn't be using String conversion (as Strings are left aligned by default), as it might cause compatibility problems in the other end. For example, if my Field has 7 bytes length, and I'm getting only two digits as my input, then these two digits should go into the first two bytes of my field (left aligned), instead of the last two bytes. So, is there any in-built function in Ab Initio, that can format a number as left aligned?

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• What operation type invoked a trigger in SQL Server 2008?

  - by Neil Moss

  I'm contemplating a single SQL trigger to handle INSERT, UPDATE and DELETE operations as part of an auditing process. Is there any statement, function or @@ variable I can interrogate to find out which operation type launched the trigger? I've seen the following pattern: declare @type char(1) if exists (select * from inserted) if exists (select * from deleted) select @Type = 'U' else select @Type = 'I' else select @Type = 'D' but is there anything else a little more direct or explicit? Thanks, Neil.

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• Java : Sorting unsorted array in descending order

  - by Bader

  hi guys i had an array of objects , i need to know how should i sort my unsorted array in descending order according to the highest value inside objects i need this using for loops not the easy way. i had done this but it seems there is a problem code student[] temp=new student[s.length]; for (int i=0;i s[i + 1].GetGpa()) { temp[i] = s[i]; } } how should i do it using for loops

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• How to create a container that holds different types of function pointers in C++?

  - by Alex

  I'm doing a linear genetic programming project, where programs are bred and evolved by means of natural evolution mechanisms. Their "DNA" is basically a container (I've used arrays and vectors successfully) which contain function pointers to a set of functions available. Now, for simple problems, such as mathematical problems, I could use one type-defined function pointer which could point to functions that all return a double and all take as parameters two doubles. Unfortunately this is not very practical. I need to be able to have a container which can have different sorts of function pointers, say a function pointer to a function which takes no arguments, or a function which takes one argument, or a function which returns something, etc (you get the idea)... Is there any way to do this using any kind of container ? Could I do that using a container which contains polymorphic classes, which in their turn have various kinds of function pointers? I hope someone can direct me towards a solution because redesigning everything I've done so far is going to be painful.

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• Why JavaScript Statement "ga = ga || []" Works?

  - by Morgan Cheng

  Below javascript statements will cause error, if ga is not declared. if (ga) { alert(ga); } The error is: ga is not defined It looks undeclared variable cannot be recognized in bool expression. So, why below statement works? var ga = ga || []; To me, the ga is treated as bool value before "||". If it is false, expression after "||" is assigned to final ga.

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• What encoding I should use in editor (NetBeans), if I were intend to print non-english character

  - by Yan Cheng CHEOK

  I try to set the encoding of my editor to UTF-16. (Java String store the data in UTF-16 internally, right?) And I type the following code package helloworld; /** * * @author yan-cheng.cheok */ public class Main { /** * @param args the command line arguments */ public static void main(String[] args) { // TODO code application logic here System.out.println("???"); System.out.println("\u6587\u4EF6\u79CD\u7C7B"); } } However, the output is not what I expected : ???? ????? I try to change the editor encoding format to UTF-8, it works this time! ??? ???? May I know why I need to change the editor encoding format to UTF-8 but not UTF-16? Isn't Java String store the data in UTF-16 internally?

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• Deploying a Rails App to Multiple Servers using Capistrano - Best Practices

  - by Louise

  I have a rails application that I need to deploy to 3 servers - machine1.com, machine2.com and machine3.com. I want to be able to deploy it to all machines at once and each machine individually. Can someone help me out with a skeleton Capistrano config file / recipe? Should it all be in deploy.rb or should I break it out in machine1.rb, etc? I thought I was on the right track getting Capistrano to take in command line arguments, but it choked when I tried set the roles within the namespaces. I'd pass in 'hosts=1,2,3' as an argument and set the role:app/web/db to "machine#{host}.com" after splitting on the command and going into an each do |host| {}... Anyway, other than creating 4 different deploy.rb files and renaming it before running cap:deploy each time, I'm stumped. I'd like to be able to do the following: cap deploy:machine1:latest_version_from_svn cap deploy:all_machines:latest:version_from_svn Just don't know if it should all be in deploy.rb split up with namespaces or if it should be broken into multiple deploy*.rb files.

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• Calling a method on windows service while executing

  - by ultraman69

  Hi ! I'd like to know if it's possible to call a method on a WCF windows service while another one is executing ? I need this so I can call my Terminate method that sets a static variable shared by my threads that tells them to stop. But when I call the method on the service, it waits till the first one (Execute) is over before he takes the call...

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• Make HTML content area fit to viewport height?

  - by viatropos

  I just made this demo extracting out what I'm trying to accomplish: Autosize Main Content Area I want the pink/yellow area to act according to these rules: Minimum height is the size of its content (which is variable) IF content size is smaller than viewport size Otherwise minimum height is such that it adjusts to fill the window. Checking out the source to that demo, what am I missing? I feel like this is a pretty easy case that shouldn't require javascript. Any ideas?

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• Issue with jQuery setting checkboxes as checked in IE6 (not showing as checked?)

  - by Jonathon Joyce

  The Code: var lstInstanceIds = getData.lstInstanceIds.split(','); for(var i=0; i<lstInstanceIds.length; i++) { var value = lstInstanceIds[i]; $('input[value=' + value + ']').attr('checked','checked'); } So all i'm doing is looping a list and setting the attribute checked as checked where the values meet. This works fine in Chrome, Firefox, IE7/8, Safari. But not in IE6...

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