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  • javascript split() array contains

    - by Mahesha999
    While learning JavaScript, I did not get why the output when we print the array returned of the Sting.split() method (with regular expression as an argument) is as explained below. var colorString = "red,blue,green,yellow"; var colors = colorString.split(/[^\,]+/); document.write(colors); //this print 7 times comma: ,,,,,,, However when I print individual element of the array colors, it prints an empty string, three commas and an empty string: document.write(colors[0]); //empty string document.write(colors[1]); //, document.write(colors[2]); //, document.write(colors[3]); //, document.write(colors[4]); //empty string document.write(colors[5]); //undefined document.write(colors[6]); //undefined Then, why printing the array directly gives seven commas. Though I think its correct to have three commas in the second output, I did not get why there is a starting (at index 0) and ending empty string (at index 4). Please explain I am screwed up here.

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  • asp.net stored procedure problem

    - by kenom
    Why this code don't work,when i want run this code vwd 2008 express show me this error message:Invalid object name 'answers'. this is my ascx.cs code: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.Security; using System.Data.SqlClient; using System.Configuration; public partial class odgl : System.Web.UI.UserControl { protected void Page_Load(object sender, EventArgs e) { string connectionString = @"SANATIZEDSTRING!!!!"; using (SqlConnection cn = new SqlConnection(connectionString)) { using (SqlCommand dohvati = new SqlCommand("dbo.get_answers",cn)) { dohvati.CommandType = CommandType.StoredProcedure; SqlParameter izracun = new SqlParameter("@count", SqlDbType.Int); izracun.Direction = ParameterDirection.Output; dohvati.Parameters.Add(izracun); cn.Open(); dohvati.ExecuteNonQuery(); int count = Int32.Parse(dohvati.Parameters["@count"].Value.ToString()); Response.Write(count.ToString()); cn.Close(); } } } } and this is my stored procedure : set ANSI_NULLS ON set QUOTED_IDENTIFIER ON GO ALTER procedure [dbo].[get_answers] @ukupno int output as select @count= (SELECT COUNT(*) FROM answers) go

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  • explain interfaces in C#

    - by Ashish
    //inteface i11 public interface i11 { void m11(); } //interface i22 public interface i22 { void m11(); } //class ab implements interfaces i11 and i22 public class ab : i11, i22 { public void m11() { Console.WriteLine("class"); } } now when in Main() method we create an object of class ab which interface method will get called please explain all.

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  • Microsoft JScript runtime error Object doesn't support this property or method

    - by Darxval
    So i am trying to call this function in my javascript but it gives me the error of "Microsoft JScript runtime error Object doesn't support this property or method" and i cant figure out why. It is occuring when trying to call hmacObj.getHMAC. This is from the jsSHA website: http://jssha.sourceforge.net/ to use the hmac-sha1 algorithm encryption. Thank you! hmacObj = new jsSHA(signature_base_string,"HEX"); signature = hmacObj.getHMAC("hgkghk","HEX","SHA-1","HEX"); Above this i have copied the code from sha.js snippet: function jsSHA(srcString, inputFormat) { /* * Configurable variables. Defaults typically work */ jsSHA.charSize = 8; // Number of Bits Per character (8 for ASCII, 16 for Unicode) jsSHA.b64pad = ""; // base-64 pad character. "=" for strict RFC compliance jsSHA.hexCase = 0; // hex output format. 0 - lowercase; 1 - uppercase var sha1 = null; var sha224 = null; The function it is calling (inside of the jsSHA function) (snippet) this.getHMAC = function (key, inputFormat, variant, outputFormat) { var formatFunc = null; var keyToUse = null; var blockByteSize = null; var blockBitSize = null; var keyWithIPad = []; var keyWithOPad = []; var lastArrayIndex = null; var retVal = null; var keyBinLen = null; var hashBitSize = null; // Validate the output format selection switch (outputFormat) { case "HEX": formatFunc = binb2hex; break; case "B64": formatFunc = binb2b64; break; default: return "FORMAT NOT RECOGNIZED"; }

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  • C# Graphics without Windows form

    - by teishu
    Hi, Could someone provide an example of drawing graphics without a windows form? I have an app that doesn't have a console window or windows form, but i need to draw some basic graphics (lines and rectangles etc.) Hope that makes sense. Thanks in advance.. J

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  • How do I embed a binary within a Delphi executable and extract at runtime?

    - by Mick
    I'd like to embed an executable inside of my Delphi binary and extract it at runtime. The purpose of this is to ensure that a helper utility is always available on the system, without having to distribute multiple files. With Delphi 2007 I have used JvDataEmbedded, but I am building a console application and I want to know if anyone knows of another way to do it without having to add a hidden form for JvDataEmbedded. I am using Delphi 2010.

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  • Access property using its name in vb.net

    - by Aleksey
    For example: Sub Test() Dim car as new MyCar car.chassis.wheel.radius = 15 Console.WriteLine(car.chassis.wheel.radius) End Sub So question is. Is it possible to access the property using its string name like Something("car.chassis.wheel.radius") = 15?

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  • overloading "<<" with a struct (no class) cout style

    - by monkeyking
    I have a struct that I'd like to output using either 'std::cout' or some other output stream. Is this possible without using classes? Thanks #include <iostream> #include <fstream> template <typename T> struct point{ T x; T y; }; template <typename T> std::ostream& dump(std::ostream &o,point<T> p) const{ o<<"x: " << p.x <<"\ty: " << p.y <<std::endl; } template<typename T> std::ostream& operator << (std::ostream &o,const point<T> &a){ return dump(o,a); } int main(){ point<double> p; p.x=0.1; p.y=0.3; dump(std::cout,p); std::cout << p ;//how? return 0; } I tried different syntax' but I cant seem to make it work.

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  • .bat file to update loopback controller to external ip

    - by cable729
    Okay, so I've figured out how to get my external ip using wget: wget -q -O - http://whatismyip.com/automation/n09230945.asp that outputs the ip to the command console. adding currentip.txt to the end will write it to a text file. But what I want to do is use netsh interface ip set address name="Local Area Connection 2" source=static addr=[WHAT DO I PUT HERE] Also, a way to make the command prompt not flash would be nice too :)

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  • XML Serialization and Deserialization in C#

    - by SOF User
    <job id="ID00004" name="PeakValCalcO"> <uses file="Seismogram_FFI_0_1_ID00003.grm" link="input" /> <uses file="PeakVals_FFI_0_1_ID00003.bsa" link="output" /> </job> <job id="ID00005" name="SeismogramSynthesis" > <uses file="FFI_0_1_txt.variation-s07930-h00000" link="input" /> <uses file="Seismogram_FFI_0_1_ID00005.grm" link="output" /> </job> Let say I have this XML I want to convert into .net Object how can do this i tried it but it doesn't work correct... public class jobs : List<job> { } public class job { public string id { get; set; } public string name { get; set; } public List<uses> Files { get; set; } } public class uses { public string file { get; set; } public string link { get; set; } } private void Form1_Load(object sender, EventArgs e) { XmlSerializer serializer = new XmlSerializer(typeof(jobs)); TextReader tr = new StreamReader("CyberShake_100.xml"); job b = (job)serializer.Deserialize(tr); tr.Close(); }

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  • text from a file turned into a variable?

    - by b3y4z1d
    If I made a program that stores strings on a text file using the "list"-function(#include ), and then I want to copy all of the text from that file and call it something(so I can tell the program to type in all of the text I copied somewhere by using that one variable to refer to the text), do I use a string,double,int or what do I declare that chunk of text as? I'm making the program using c++ in a simple console application.

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  • Boost threading/mutexs, why does this work?

    - by Flamewires
    Code: #include <iostream> #include "stdafx.h" #include <boost/thread.hpp> #include <boost/thread/mutex.hpp> using namespace std; boost::mutex mut; double results[10]; void doubler(int x) { //boost::mutex::scoped_lock lck(mut); results[x] = x*2; } int _tmain(int argc, _TCHAR* argv[]) { boost::thread_group thds; for (int x = 10; x>0; x--) { boost::thread *Thread = new boost::thread(&doubler, x); thds.add_thread(Thread); } thds.join_all(); for (int x = 0; x<10; x++) { cout << results[x] << endl; } return 0; } Output: 0 2 4 6 8 10 12 14 16 18 Press any key to continue . . . So...my question is why does this work(as far as i can tell, i ran it about 20 times), producing the above output, even with the locking commented out? I thought the general idea was: in each thread: calculate 2*x copy results to CPU register(s) store calculation in correct part of array copy results back to main(shared) memory I would think that under all but perfect conditions this would result in some part of the results array having 0 values. Is it only copying the required double of the array to a cpu register? Or is it just too short of a calculation to get preempted before it writes the result back to ram? Thanks.

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  • How does PHP interface with Apache?

    - by Sbm007
    Hi, I've almost finished writing a HTTP/1.0 compliant web server under Java (no commercial usage as such, this is just for fun) and basically I want to include PHP support. I realize that this is no easy task at all, but I think it'll be a nice accomplishment. So I want to know how PHP exactly interfaces with the Apache web server (or any other web server really), so I can learn from it and write my own PHP wrapper. It doesn't necessarily have to be mod_php, I don't mind writing a FastCGI wrapper - which to my knowledge is capable of running PHP as well. I would've thought that all that PHP needs is the output that goes to client (so it can interpret the PHP parts), the full HTTP request from client (so it can extract POST variables and such) and the client's host name. And then you simply take the parsed PHP code and write that to the output stream. There will probably be more things, but in essence that's how I would have thought it works. From what I've gathered so far, apache2handler provides an API which PHP makes use of to 'connect' to Apache. I guess it's an idea to look at the source code for apache2handler and php5apache2.dll or so, but before I do that I thought I'd ask SO first. If anyone has more information, experience, or some sort of specification that is relevant to this then please let me know. Thanks in advance!

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  • Extend an entity to create a computed observable that requires a navigation property

    - by Julianyus
    I'm trying to extend an entity to create a computed observable that requires a navigation property: app.domain.indicador = function () { this.ValorMetaActual = ko.computed({ read: function () { console.log(this.ValoresMeta); //navigation property: undefined return 0; }, deferEvaluation: true }, this); }; The problem is that when the observable is created, the navigation property does not yet exist. What could I do to fix this?

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  • DRY way of calling a method in every rails model

    - by Tim
    Along the same lines as this question, I want to call acts_as_reportable inside every model so I can do one-off manual reports in the console in my dev environment (with a dump of the production data). What's the best way to do this? Putting acts_as_reportable if ENV['RAILS_ENV'] == "development" in every model is getting tedious and isn't very DRY at all. Everyone says monkey patching is the devil, but a mixin seems overkill. Thanks!

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  • What's the easy way to test for 304 reponses?

    - by John Mee
    I need to test if my 304 responses are working, but my development environment is pretty hard set on force no-cache. Is there an easy way to modify the max-age value of the cache-control header before it goes out? I'm perhaps a bit optimistic in hoping chrome (or an extension, or FF) has a console command letting me alter the if-modified-since header then send the request. Maybe paste something into a telnet connection?

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  • add database Tablenames to the JList in java

    - by Litecia
    // Declare JList private JList jlstTab, jlstCol; . . . DefaultListModel dlmTables = new DefaultListModel(); DefaultListModel dlmCol = new DefaultListModel(); // Instantiate dlmTables.addElement("kl"); jlstTab= new JList(dlmTables); jlstTab.setSelectedIndex(0); jlstTab.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); . . . . Connect to the database public static void main(String args[]) { DBToolSwing cs = new DBToolSwing("DB Tool Swing"); try DBAccessObject dbAccess1 = new DBAccessObject("jdbc:odbc:JavaClassDSN"); DBAccessObject dbAccess2 = new DBAccessObject(); ResultSet rsTables = dbAccess1.getDatabaseTableNames(); while (rsTables.next()) System.out.println(rsTables.getString("TABLE_NAME")); I need to get the table names from the database, the output shouldn't be printed on the screen, instead I need the output added to the JlstTab so dlmTables.addElement("TABLE_NAME"); Please if someone can help I would appreciate it. Thanks in advance.

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  • How to write to a Text File in Pipe delimited format from MS Sql Server / ASP.Net?

    - by NJTechGuy
    I have a text file which needs to be constantly updated (regular intervals). All I want is the syntax and possibly some code that outputs data from a MS Sql Database using ASP.Net. The code I have so far is : <%@ Import Namespace="System.IO" %> <script language="vb" runat="server"> sub Page_Load(sender as Object, e as EventArgs) Dim FILENAME as String = Server.MapPath("Output.txt") Dim objStreamWriter as StreamWriter ' If Len(Dir$(FILENAME)) > 0 Then Kill(FILENAME) objStreamWriter = File.AppendText(FILENAME) objStreamWriter.WriteLine("A user viewed this demo at: " & DateTime.Now.ToString()) objStreamWriter.Close() Dim objStreamReader as StreamReader objStreamReader = File.OpenText(FILENAME) Dim contents as String = objStreamReader.ReadToEnd() lblNicerOutput.Text = contents.Replace(vbCrLf, "<br>") objStreamReader.Close() end sub </script> <asp:label runat="server" id="lblNicerOutput" Font-Name="Verdana" /> With PHP, it is a breeze, but with .Net I have no clue. If you could help me with the database connectivity and how to write the data in pipe delimited format to an Output.txt file, that had be awesome. Thanks guys!

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  • Give the mount point of a path

    - by Charles Stewart
    The following, very non-robust shell code will give the mount point of $path: (for i in $(df|cut -c 63-99); do case $path in $i*) echo $i;; esac; done) | tail -n 1 Is there a better way to do this? Postscript This script is really awful, but has the redeeming quality that it Works On My Systems. Note that several mount points may be prefixes of $path. Examples On a Linux system: cas@txtproof:~$ path=/sys/block/hda1 cas@txtproof:~$ for i in $(df -a|cut -c 57-99); do case $path in $i*) echo $i;; esac; done| tail -1 /sys On a Mac osx system cas local$ path=/dev/fd/0 cas local$ for i in $(df -a|cut -c 63-99); do case $path in $i*) echo $i;; esac; done| tail -1 /dev Note the need to vary cut's parameters, because of the way df's output differs: indeed, awk is better. Answer It looks like munging tabular output is the only way within the shell, but df /dev/fd/impossible | tail -1 | awk '{ print $NF}' is a big improvement on what I had. Note two differences in semantics: firstly, df $path insists that $path names an existing file, the script I had above doesn't care; secondly, there are no worries about dereferncing symlinks. It's not difficult to write Python code to do the job.

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  • Why is IE8 on XP not properly reading from XML using JQuery?

    - by dking
    Given this XML in data.xml <?xml version="1.0" encoding="utf-8"?> <data> <bar>100</bar> </data> I want to display the content from the "bar" element using the following code in test.html <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script> </head> <body> <script type="text/javascript"> $.get('data.xml', function(xml) { var foo = $(xml).find('bar').text(); document.write("<span>foo: [" + foo + "]</span>"); }); </script> </body> </html> The output in webkit based browsers: foo: [100] The output in IE8 on XP: foo: [] Why do webkit browsers read the element's content correctly while IE8 interprets it as an empty string?

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  • Circumvent c++ null-terminated string frustration

    - by ypnos
    I'm using boost::program_options and it suffers from the same as many other c++ libs, even std itself: It still uses C-style null-terminated strings, because nobody really likes the weak std::string. The method in question is: options_description_easy_init& operator()(const char* name, const value_semantic* s, const char* description); The typical use case is just fine: options.add_options() ("graphical", bool_switch(&isGraphical)->default_value(false), "Show any graphical output during runtime") However, I need the name of the option to be set dynamically. The reason is that in some cases I nead a custom prefix, which is added to the string by my function std::string key(const std::string& k): options.add_options() (key("graphical"), bool_switch(&isGraphical)->default_value(false), "Show any graphical output during runtime") This fails. I could now use c_str() on the std::string but that's evil -- I don't know how long program_options keeps the variable around and if my string is still alive when needed. I could also reserve memory in a buffer etc. and hand in that. The buffer is never freed and it sucks/is evil. Is there anything else I can do to circumvent the C-style string mess in this situation?

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  • Blackberry - "[projectname].debug file is missing" and "I/O Error: Cannot find program "jar"

    - by TreeUK
    I'm running eclipse with the Blackberry Java Plug-in, working on a 1.4.5 Blackberry project. The project has been building and debugging in the emulator normally until I started getting: A prompt saying "[projectname].debug file is missing". A message in the Blackberry Packaging Console saying "I/O Error: Cannot find program "jar": CreateProcess error=2." Anyone have any ideas what could be causing this?

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  • Git add not working with .png files?

    - by D Lawson
    I have a dirty working tree, dirty because I made changes to source files and touched up some images. I was trying to add just the images to the index, so I ran this command: git add *.png But, this doesn't add the files. There were a few new image files that were added, but none of the ones that were modified/pre-existing were added. What gives? Edit: Here is some relevant terminal output $ git status # On branch master # # Changed but not updated: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: src/main/java/net/plugins/analysis/FormMatcher.java # modified: src/main/resources/icons/doctor_edit_male.png # modified: src/main/resources/icons/doctor_female.png # # Untracked files: # (use "git add <file>..." to include in what will be committed) # # src/main/resources/icons/arrow_up.png # src/main/resources/icons/bullet_arrow_down.png # src/main/resources/icons/bullet_arrow_up.png no changes added to commit (use "git add" and/or "git commit -a") Then executed "git add *.png" (no output after command) Then: $ git status # On branch master # # Changes to be committed: # (use "git reset HEAD <file>..." to unstage) # # new file: src/main/resources/icons/arrow_up.png # new file: src/main/resources/icons/bullet_arrow_down.png # new file: src/main/resources/icons/bullet_arrow_up.png # # Changed but not updated: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: src/main/java/net/plugins/analysis/FormMatcher.java # modified: src/main/resources/icons/doctor_edit_female.png # modified: src/main/resources/icons/doctor_edit_male.png

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