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• execCommand not working for xml file

  - by ganapati

  I am using execCommand command to 'Hilite' selected text on the page which is rendered with gecko engine/gtkmozembed. if ( !document.execCommand("HiliteColor", false, colour) ) { document.execCommand("BackColor", false, colour); } This is working fine with HTML pages. But i have some XML pages( books in xml format). execCommand is not working for those XML pages. It gives warning like TypeError: document.execCommand is not a function How can i make execCommand works on XML? Thanks.

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• How to join mysql tables

  - by Ivan

  I've an old table like this: user> id | name | address | comments And now I've to create an "alias" table to allow some users to have an alias name for some reasons. I've created a new table 'user_alias' like this: user_alias> name | user But now I have a problem due my poor SQL level... How to join both tables to generate something like this: 1 | my_name | my_address | my_comments 1 | my_alias | my_address | my_comments 2 | other_name | other_address | other_comments I mean, I want to make a "SELECT..." query that returns in the same format as the "user" table ALL users and ALL alias.. Something like this: SELECT user.* FROM user LEFT JOIN user_alias ON `user`=`id` but it doesn't work for me..

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• printf field width : bytes or chars?

  - by leonbloy

  The printf/fprintf/sprintf family supports a width field in its format specifier. I have a doubt for the case of (non-wide) char arrays arguments: Is the width field supposed to mean bytes or characters? What is the (correct-de facto) behaviour if the char array corresponds to (say) a raw UTF-8 string? (I know that normally I should use some wide char type, that's not the point) For example, in char s[] = "ni\xc3\xb1o"; // utf8 encoded "niño" fprintf(f,"%5s",s); Is that function supposed to try to ouput just 5 bytes (plain C chars) (and you take responsability of misalignments or other problems if two bytes results in a textual characters) ? Or is it supposed to try to compute the length of "textual characters" of the array? (decodifying it... according to the current locale?) (in the example, this would amount to find out that the string has 4 unicode chars, so it would add a space for padding).

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• Steaming a non-PCM WAV file to a SilverLight application

  - by Satumba

  Hi, I would like to allow users to play recorded WAV files that stored on a server back to a Silverlight application as a client to play them. I saw that there is a way to play a WAV file on Silverlight (here), but when i tried to impliment it, i got an error playing the file because it is not in PCM format but encoded. The files that i'm trying to play are encoded with a special encoder, so i thought that the only way is to decode the WAV file on the server and stream it back to the client. The limitation is that the decode process should occur in real time because it is not reasonable to convert all the WAV files that exists. Is it possible to do it? Which streamer can i use? (Windows Media Service can help here?) Does somebody has any experience with such a scenario? Appreciate your help.

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• Correct way to Convert 16bit PCM Wave data to float

  - by fredley

  I have a wave file in 16bit PCM form. I've got the raw data in a byte[] and a method for extracting samples, and I need them in float format, i.e. a float[] to do a Fourier Transform. Here's my code, does this look right? I'm working on Android so javax.sound.sampled etc. is not available. private static short getSample(byte[] buffer, int position) { return (short) (((buffer[position + 1] & 0xff) << 8) | (buffer[position] & 0xff)); } ... float[] samples = new float[samplesLength]; for (int i = 0;i<input.length/2;i+=2){ samples[i/2] = (float)getSample(input,i) / (float)Short.MAX_VALUE; }

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• Representing a schedule in a database

  - by David Pfeffer

  I have the interesting problem of representing complex schedule data in a database. I need to be able to represent the entirety of what the iCalendar (ics) format can represent, but in my database. I don't care about insertion efficiency but query efficiency is critical. The operation I will be doing most often is providing either a single date/time or a date/time range, and trying to determine if the defined schedule matches any part of the date/time range. Other operations can be slower. For those unfamiliar, ics allows representation of a single event or a reoccuring event based on multiple times per day, days of the week, week of a month, month, year, or some combination of those. For example, the third Thursday in November, or the 25th of December, or every two weeks starting November 2nd and continuing until September the following year. Any suggestions?

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• regex to match postgresql bytea

  - by filiprem

  In PostgreSQL, there is a BLOB datatype called bytea. It's just an array of bytes. bytea literals are output in the following way: '\\037\\213\\010\\010\\005`Us\\000\\0001.fp3\'\\223\\222%' See PostgreSQL docs for full definition of the format. I'm trying to construct a Perl regular expression which will match any such string. It should also match standard ANSI SQL string literals, like 'Joe', 'Joe''s Mom', 'Fish Called ''Wendy''' It should also match backslash-escaped variant: 'Joe\'s Mom', . First aproach (shown below) works only for some bytea representations. s{ ' # Opening apostrophe (?: # Start group [^\\\'] # Anything but a backslash or an apostrophe | # or \\ . # Backslash and anything | # or \'\' # Double apostrophe )* # End of group ' # Closing apostrophe }{LITERAL_REPLACED}xgo; For other (longer ones, with many escaped apostrophes, Perl gives such warning: Complex regular subexpression recursion limit (32766) exceeded at ./sqa.pl line 33, < line 1. So I am looking for a better (but still regex-based) solution, it probably requires some regex alchemy (avoiding backreferences and all).

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• writing a fast parser in python

  - by panzi

  I've written a hands-on recursive pure python parser for a some file format (ARFF) we use in one lecture. Now running my exercise submission is awfully slow. Turns out by far the most time is spent in my parser. It's consuming a lot of CPU time, the HD is not the bottleneck. I wonder what performant ways are there to write a parser in python? I'd rather not rewrite it in C. I tried to use jython, but that decreased performance a lot! The files I parse are partially huge ( 150 MB) with very long lines. My current parser only needs a look-ahead of one character. I'd post the source here but I don't know if that's such a good idea. After all the submission deadline has not jet ended. But then, the focus in this exercise is not the parser. You can choose whatever language you want to use and there already is a parser for Java.

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• Why can't my main class see the array in my calender class

  - by Rocky Celltick Eadie

  This is a homework problem. I'm already 5 days late and can't figure out what I'm doing wrong.. this is my 1st semester in Java and my first post on this site Here is the assignment.. Create a class called Calendar. The class should contain a variable called events that is a String array. The array should be created to hold 5 elements. Use a constant value to specify the array size. Do not hard code the array size. Initialize the array in the class constructor so that each element contains the string “ – No event planned – “. The class should contain a method called CreateEvent. This method should accept a String argument that contains a one-word user event and an integer argument that represents the day of the week. Monday should be represented by the number 1 and Friday should be represented by the number 5. Populate the events array with the event info passed into the method. Although the user will input one-word events, each event string should prepend the following string to each event: event_dayAppoinment: (where event_day is the day of the week) For example, if the user enters 1 and “doctor” , the first array element should read: Monday Appointment: doctor If the user enters 2 and “PTA” , the second array element should read: Tuesday Appointment: PTA Write a driver program (in a separate class) that creates and calls your Calendar class. Then use a loop to gather user input. Ask for the day (as an integer) and then ask for the event (as a one word string). Pass the integer and string to the Calendar object’s CreateEvent method. The user should be able enter 0 – 5 events. If the user enters -1, the loop should exit and your application should print out all the events in a tabular format. Your program should not allow the user to enter invalid values for the day of the week. Any input other than 1 – 5 or -1 for the day of the week would be considered invalid. Notes: When obtaining an integer from the user, you will need to use the nextInt() method on your Scanner object. When obtaining a string from a user, you will need to use the next() method on your Scanner object. Here is my code so far.. //DRIVER CLASS /** * * @author Rocky */ //imports scanner import java.util.Scanner; //begin class driver public class driver { /** * @paramargs the command line arguments */ //begin main method public static void main(String[] args) { //initiates scanner Scanner userInput = new Scanner (System.in); //declare variables int dayOfWeek; String userEvent; //creates object for calender class calendercalenderObject = new calender(); //user prompt System.out.println("Enter day of week for your event in the following format:"); System.out.println("Enter 1 for Monday"); System.out.println("Enter 2 for Tuesday"); System.out.println("Enter 3 for Wednsday"); System.out.println("Enter 4 for Thursday"); System.out.println("Enter 5 for Friday"); System.out.println("Enter -1 to quit"); //collect user input dayOfWeek = userInput.nextInt(); //user prompt System.out.println("Please type in the name of your event"); //collect user input userEvent = userInput.next(); //begin while loop while (dayOfWeek != -1) { //test for valid day of week if ((dayOfWeek>=1) && (dayOfWeek<=5)){ //calls createEvent method in calender class and passes 2 variables calenderObject.createEvent(userEvent,dayOfWeek); } else { //error message System.out.println("You have entered an invalid number"); //user prompts System.out.println("Press -1 to quit or enter another day"); System.out.println("Enter 1 for Monday"); System.out.println("Enter 2 for Tuesday"); System.out.println("Enter 3 for Wednsday"); System.out.println("Enter 4 for Thursday"); System.out.println("Enter 5 for Friday"); System.out.println("Enter -1 to quit"); //collect user input dayOfWeek = userInput.nextInt(); //end data validity test } //end while loop } //prints array to screen int i=0; for (i=0;i<events.length;i++){ System.out.println(events[i]); } //end main method } } /** * * @author Rocky */ //imports scanner import java.util.Scanner; //begin calender class public class calender { //creates events array String[] events = new String[5]; //begin calender class constructor public calender() { //Initializes array String[] events = {"-No event planned-","-No event planned-","-No event planned-","-No event planned-","-No event planned-"}; //end calender class constructor } //begin createEvent method public String[] createEvent (String userEvent, int dayOfWeek){ //Start switch test switch (dayOfWeek){ case 1: events[0] = ("Monday Appoinment:") + userEvent; break; case 2: events[1] = ("Tuesday Appoinment:") + userEvent; break; case 3: events[2] = ("WednsdayAppoinment:") + userEvent; break; case 4: events[3] = ("Thursday Appoinment:") + userEvent; break; case 5: events[4] = ("Friday Appoinment:") + userEvent; break; default: break; //End switch test } //returns events array return events; //end create event method } //end calender class }

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• Windows and system processes

  - by jemper

  Note: I've asked this question in a similiar format on superuser but it seems like it may fit here on SO better. It definitely also is about programming as it concerns parts of the Win32 API, Windows in general and process management. So there are these processes that can't be terminated with taskkill - system processes in general. But there also is, for example my Anti Virus program that makes itself "unterminateable". How can I access and mainly terminate system processes under windows? (kill.exe by Microsoft doesn't work) How do processes like anti-virus programs protect themselves? How can you turn them off again, then?

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• Real-time data on webpage with jQuery

  - by Steven Hepting

  I would like a webpage that constantly updates a graph with new data as it arrives. Regularly, all the data you have is passed to the page at the beginning of the request. However, I need the page to be able to update itself with fresh information every few seconds to redraw the graph. Background The webpage will be similar to this http://www.panic.com/blog/2010/03/the-panic-status-board/. The data coming in will temperature values to be graphed measured by an Arduino and saved to the Django database (this part is already complete). Update It sounds as though the solution is to use the jQuery.ajax() function ( http://api.jquery.com/jQuery.ajax/) with a function as the .complete callback that will schedule another request several seconds later to a URL that will return the data in JSON format. How can that method be scheduled? With the .delay() function?

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• My Excel template is corrupted

  - by Prasanna

  I am using an Excel template (2003) for report generation. The workbook is of 4 sheets. The original template file works fine. But when I change the template (just remove a single static char), the report is getting generated but with some junk format. When I try opening the Excel file, I get this message: The following is a list of repairs: Damage to the file was so extensive that repairs were not possible. Excel attempted to recover your formulas and values, but some data may have been lost or corrupted. Please advise.

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• Formatting Excel Document in Qt

  - by user249490

  Hi, I am using Qt 4.5 and Windows XP. I need to create an Microsoft Excel Document that has data (some labels and values) from the Qt application. I need to format those data with some fonts,bold,italics,color, background color etc., Besides ordinary data, there will be Picture files (JPG) also. I need to add those into the Excel. I know retrieving values from Excel using QAxWidget, QAxObject. But I don't have a clue about the formatting options that can be applied to cells through Qt and adding images as well?? Any help regarding this are welcome.

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• Regular Expressions, Checking for a range of occurrences

  - by gmcalab

  I have a phone number I want to match against a regular expression. The format of the phone number must match this: (123) 123-4567 x12345 The extension is optional. Also the extension must contain 1-5 numbers. Below is a regular expression I wrote that works. ^\(\d{3}\) \d{3}-\d{4}( x\d\d?\d?\d?\d?)?$ I was wondering if there is a better way to check for the extension instead of x\d\d?\d?\d?\d? Can I say 1-5 occurrences of \d instead of the above some how ?

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• How to export SQL Server 2005 query to CSV

  - by jmgant

  I want to export some SQL Server 2005 data to CSV format (comma-separated with quotes). I can think of a lot of complicated ways to do it, but I want to do it the right way. I've looked at bcp, but I can't figure out how to put the quotes around the fields (except concatenating them to the field values, which is ugly). I guess I could do it with sqlcmd and -o, but that seems ugly for the same reason. Is there a bcp way to do it? Is there a reasonable sqlcmd way to do it? Is there some great, simple utility built into the Management Studio that I'm just overlooking?

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• UILocalNotification crash

  - by Miky Mike

  Hi everyone, could you please help me ? I'm setting up an UILocalNotification and It crashes when I try to set its userInfo dictionary. My dictionary is not empty (It contains 88 objects). Here is the code : NSDictionary* myUserInfo = [NSDictionary dictionaryWithObject: fetchedObjects forKey: @"textbody"]; UILocalNotification *localNotif = [[UILocalNotification alloc] init]; if (localNotif == nil) return; // défining the interval NSTimeInterval oneMinute = 60; localNotif.timeZone = [NSTimeZone localTimeZone]; NSDate *fireDate = [[NSDate alloc]initWithTimeIntervalSinceNow:oneMinute]; localNotif.fireDate = fireDate; localNotif.userInfo = myUserInfo; [fetchedObjects release]; and the console gives me this : Property list invalid for format: 200 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'unable to serialize userInfo: (null)' Any idea ?

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• how to call sql string from nhibernate

  - by frosty

  i have the following method, at the moment it's return the whole sql string. How would i execute the following. using (ITransaction transaction = session.BeginTransaction()) { string sql = string.Format( @"DECLARE @Cost money SET @Cost = -1 select @Cost = MAX(Cost) from item_costings where Item_ID = {0} and {1} >= Qty1 and {1} <= Qty2 RETURN (@Cost)", itemId, quantity); string mystring = session .CreateSQLQuery(sql) .ToString(); transaction.Commit(); return mystring; } // EDIT here is the final version using criteria using (ISession session = NHibernateHelper.OpenSession()) { decimal cost = session .CreateCriteria(typeof (ItemCosting)) .SetProjection(Projections.Max("Cost")) .Add(Restrictions.Eq("ItemId", itemId)) .Add(Restrictions.Le("Qty1", quantity)) .Add(Restrictions.Ge("Qty2", quantity)) .UniqueResult<decimal>(); return cost; }

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• How can I make a DateTimePicker display an empty string?

  - by brass-kazoo

  I would like to be able to display a DateTimePicker that has a default value of nothing, i.e. no date. For example, I have a start date dtTaskStart and an end date dtTaskEnd for a task, but the end date is not known, and not populated initially. I have specified a custom format of yyyy-MM-dd for both controls. Setting the value to null, or an empty string at runtime causes an error, so how can I accomplish this? I have considered using a checkbox to control the enabling of this field, but there is still the issue of displaying an initial value.. Edit: Arguably a duplicate of the question DateTimePicker Null Value (.NET), but the solution I found for my problem is not a solution for that question, so I think it should remain here for others to find..

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• Add Core Data Index to certain Attributes via migration

  - by steipete

  For performance reasons, i want to set the Indexed Attribute to some of my entities. I created a new core data model version to perform the changes. Core Data detects the changes and migrates my model to the new version, however, NO INDEXES ARE GENERATED. If I recreate the database from scratch, the indexes are there. I checked with SQLite Browser both on the iPhone and on the Simulator. The problem only occurs if a database in the prior format is already there. Is there a way to manually add the indexes? Write some sql for that? Or am I missing something? I did already some more critical migrations, no problems there. But those missing indexes are bugging me. Thanks for helping!

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• Objective c string formatter for distances

  - by nevan

  I have a distance as a float and I'm looking for a way to format it nicely for human readers. Ideally, I'd like it to change from m to km as it gets bigger, and to round the number nicely. Converting to miles would be a bonus. I'm sure many people have had a need for one of these and I'm hoping that there's some code floating around somewhere. Here's how I'd like the formats: 0-100m: 47m (as a whole number) 100-1000m: 325m or 320m (round to the nearest 5 or 10 meters) 1000-10000m: 1.2km (round to nearest with one decimal place) 10000m +: 21km If there's no code available, how can I write my own formatter? Thanks

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• Joining two queries into one query or making a sub-query

  - by gary A.K.A. G4

  I am having some trouble with the following queries originally done for some Access forms: SELECT qry1.TCKYEAR AS Yr, COUNT(qry1.SID) AS STUDID, qry1.SID AS MID, table_tckt.tckt_tick_no FROM table_tckt INNER JOIN qry1 ON table_tckt.tckt_SID = qry1.SID GROUP BY qry1.TCKYEAR, qry1.SID, table_tckt.tckt_tick_no HAVING (((table_tckt.tick_no)=[forms]![frmNAME]![cboNAME])); SELECT table_tckt.sid, FORMAT([tckt_iss_date], 'yyyy') AS TCKYEAR, table_tckt.tckt_tick_no, table_tckt.licstate FROM table_tckt WHERE (((table_tckt.licstate)<>"NA")); I am no longer working with Access, but JSP for the forms. I need to somehow either combine these two queries into one query or find another way to have a query 'query' another one.

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• Multiple lines of text to a single map

  - by steven

  I've been trying to use Hadoop to send N amount of lines to a single mapping. I don't require for the lines to be split already. I've tried to use NLineInputFormat, however that sends N lines of text from the data to each mapper one line at a time [giving up after the Nth line]. I have tried to set the option and it only takes N lines of input sending it at 1 line at a time to each map: job.setInt("mapred.line.input.format.linespermap", 10); I've found a mailing list recommending me to override LineRecordReader::next, however that is not that simple, as that the internal data members are all private. I've just checked the source for NLineInputFormat and it hard codes LineReader, so overriding will not help. Also, btw I'm using Hadoop 0.18 for compatibility with the Amazon EC2 MapReduce.

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• SQL Reporting Services Daylight saving time query (pt 2)

  - by ross-starkey

  I posted a question a couple of days ago (SQL Reporting Services Daylight saving time query) which was I received an answer for (thanks very much) but did not elaborate on the whole problem I am experiencing. Not only did I require the returned date time format to account for day light saving but I also need the search parameter @StartDate to allow for DST. Currently if I key in a scheduled start time of 31/03/2010 11:00 and because the SQL DB has already taken the hours difference into consideration I get no results back. If I key in 31/03/2010 10:00 then the correct details are returned. Is there away using T-SQL or the like to get the search parameter to pass the adjusted time to the DB?

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• Typical size of unit tests compared to test code

  - by Frank Schwieterman

  I'm curious what a reasonable / typical value is for the ratio of test code to production code when people are doing TDD. Looking at one component, I have 530 lines of test code for 130 lines of production code. Another component has 1000 lines of test code for 360 lines of production code. So the unit tests are requiring roughly 3x to 5x as much code. This is for Javascript code. I don't have much tested C# code handy, but I think for another project I was looking at 2x to 3x as much test code then production code. It would seem to me that the lower that value is, assuming the tests are sufficient, would reflect higher quality tests. Pure speculation, I just wonder what ratios other people see. I know lines of code is an loose metric, but since I code in the same style for both test and production (same spacing format, same ammount of comments, etc) the values are comparable.

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• Parsing Serialized JSON DataSet using Jquery

  - by Zachary Carter

  Hello all, and thanks for reading. I wrote a web service which is called through jsonp, and returns a .Net 3.5 DataSet which I then want to parse using jquery. It appears that the getJson() method is working fine as far as parsing the json goes. The following request - $.getJSON("http://localhost:80/ws.asmx/Example?format=json&callback=?", function(data) { alert(data.d); }); results in - {"Tables": [ { "Rows": [ { "CASE_TYP_CD": "M", "CASE_TYP_DESC": "MOVING VIOLATION", "AUTO_GENERATE": "Y", "CONFIDENTIAL_FLG": "N" }, { "CASE_TYP_CD": "T", "CASE_TYP_DESC": "TRUANCY/FAILURE TO ATTEND SCHOOL", "AUTO_GENERATE": "Y", "CONFIDENTIAL_FLG": "N" }, { "CASE_TYP_CD": "J", "CASE_TYP_DESC": "JUVENILE", "AUTO_GENERATE": "Y", "CONFIDENTIAL_FLG": "N" }... Well I'm kind of new at this whole json thing and I can't figure out how to gain access to the values held in the nodes. I was thinking it would be something like - $.each("CASE_TYP_CD", function() { //code goes here }); But that doesn't seem to be working. Could anyone help me out with this? Thanks in advance!

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