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  • How to validate integer and float input in asp.net textbox

    - by Rajesh Rolen- DotNet Developer
    I am using below code to validate interger and float in asp.net but if i not enter decimal than it give me error <asp:TextBox ID="txtAjaxFloat" runat="server" /> <cc1:FilteredTextBoxExtender ID="FilteredTextBoxExtender1" TargetControlID="txtAjaxFloat" FilterType="Custom, numbers" ValidChars="." runat="server" /> i have this regex also but its giving validation error if i enters only one value after decimal.. http://stackoverflow.com/questions/617826/whats-a-c-regular-expression-thatll-validate-currency-float-or-integer

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  • Retrieve sequence of data from different columns.

    - by janetsmith
    Let's say I have a table containing following data: | id | t0 | t1 | t2 | | 1 | 4 | 5 | 6 | | 2 | 3 | 3 | 2 | | 3 | 6 | 4 | 5 | | 4 | 4 | 5 | 5 | I want to retrieve all the rows containing 4, 5, 6 (regardless the position of numbers in the tables), so row 1 & row 3 will be selected. How to do that with SQL query?

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  • Float PPM image file format?

    - by Luca
    I've found a PPM image with the header starting with PF. The resolution number is stored in floating point (-1.000). No comments are inserted to get how it was produced. From the resolution, each pixel is composed by 12 bytes (4 bytes per component)... I suppose they are float or integer numbers. The problem is that I cannot get a clear image. Someone has already found this kind of images?

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  • Histogram using gnuplot?

    - by mary
    I know how to create a histogram (just use "with boxes") in gnuplot if my .dat file already has properly binned data. Is there a way to take a list of numbers and have gnuplot provide a histogram based on ranges and bin sizes the user provides?

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  • Is there a library or other way to do 128-bit math operations?

    - by samoz
    I am writing a cryptography application and need to work with 128 bit numbers. In addition to standard add, subtract, multiply, divide, and comparisons, I also need a power and modulo function as well. Does anyone know of a library or other implementation that can do this? If not 128-bit, is there a 64-bit option available?

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  • How can I read individual lines of a CSV file into a string array, to then be selectively displayed

    - by Ryan
    I need your help, guys! :| I've got myself a CSV file with the following contents: 1,The Compact,1.8GHz,1024MB,160GB,440 2,The Medium,2.4GHz,1024MB,180GB,500 3,The Workhorse,2.4GHz,2048MB,220GB,650 It's a list of computer systems, basically, that the user can purchase. I need to read this file, line-by-line, into an array. Let's call this array csvline(). The first line of the text file would stored in csvline(0). Line two would be stored in csvline(1). And so on. (I've started with zero because that's where VB starts its arrays). A drop-down list would then enable the user to select 1, 2 or 3 (or however many lines/systems are stored in the file). Upon selecting a number - say, 1 - csvline(0) would be displayed inside a textbox (textbox1, let's say). If 2 was selected, csvline(1) would be displayed, and so on. It's not the formatting I need help with, though; that's the easy part. I just need someone to help teach me how to read a CSV file line-by-line, putting each line into a string array - csvlines(count) - then increment count by one so that the next line is read into another slot. So far, I've been able to paste the numbers of each system into an combobox: Using csvfileparser As New Microsoft.VisualBasic.FileIO.TextFieldParser _ ("F:\folder\programname\programname\bin\Debug\systems.csv") Dim csvalue As String() csvfileparser.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.Delimited csvfileparser.Delimiters = New String() {","} While Not csvfileparser.EndOfData csvalue = csvfileparser.ReadFields() combobox1.Items.Add(String.Format("{1}{0}", _ Environment.NewLine, _ csvalue(0))) End While End Using But this only selects individual values. I need to figure out how selecting one of these numbers in the combobox can trigger textbox1 to be appended with just that line (I can handle the formatting, using the string.format stuff). If I try to do this using csvalue = csvtranslator.ReadLine , I get the following error message: "Error 1 Value of type 'String' cannot be converted to '1-dimensional array of String'." If I then put it as an array, ie: csvalue() = csvtranslator.ReadLine , I then get a different error message: "Error 1 Number of indices is less than the number of dimensions of the indexed array." What's the knack, guys? I've spent hours trying to figure this out. Please go easy on me - and keep any responses ultra-simple for my newbie brain - I'm very new to all this programming malarkey and just starting out! :)

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  • a non recursive approach to the problem of generating combinations at fault

    - by mark
    Hi, I wanted a non recursive approach to the problem of generating combination of certain set of characters or numbers. So, given a subset k of numbers n, generate all the possible combination n!/k!(n-k)! The recursive method would give a combination, given the previous one combination. A non recursive method would generate a combination of a given value of loop index i. I approached the problem with this code: Tested with n = 4 and k = 3, and it works, but if I change k to a number 3 it does not work. Is it due to the fact that (n-k)! in case of n = 4 and k = 3 is 1. and if k 3 it will be more than 1? Thanks. int facto(int x); int len,fact,rem=0,pos=0; int str[7]; int avail[7]; str[0] = 1; str[1] = 2; str[2] = 3; str[3] = 4; str[4] = 5; str[5] = 6; str[6] = 7; int tot=facto(n) / facto(n-k) / facto(k); for (int i=0;i<tot;i++) { avail[0]=1; avail[1]=2; avail[2]=3; avail[3]=4; avail[4]=5; avail[5]=6; avail[6]=7; rem = facto(i+1)-1; cout<<rem+1<<". "; for(int j=len;j>0;j--) { int div = facto(j); pos = rem / div; rem = rem % div; cout<<avail[pos]<<" "; avail[pos]=avail[j]; } cout<<endl; } int facto(int x) { int fact=1; while(x0) fact*=x--; return fact; }

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  • floating point hex octal binary

    - by workinprogress
    Hi, I am working on a calculator that allows you to perform calculations past the decimal point in octal, hexadecimal, binary, and of course decimal. I am having trouble though finding a way to convert floating point decimal numbers to floating point hexadecimal, octal, binary and vice versa. The plan is to do all the math in decimal and then convert the result into the appropriate number system. Any help, ideas or examples would be appreciated. Thanks!

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  • SVN naming convention: repository, branches, tags

    - by LookitsPuck
    Hey all! Just curious what your naming conventions are for the following: Repository name Branches Tags Right now, we're employing the following standards with SVN, but would like to improve on it: Each project has its own repository Each repository has a set of directories: tags, branches, trunk Tags are immutable copies of the the tree (release, beta, rc, etc.) Branches are typically feature branches Trunk is ongoing development (quick additions, bug fixes, etc.) Now, with that said, I'm curious how everyone is not only handling the naming of their repositories, but also their tags and branches. For example, do you employ a camel case structure for the project name? So, if your project is something like Backyard Baseball for Youngins, how do you handle that? backyardBaseballForYoungins backyard_baseball_for_youngins BackyardBaseballForYoungins backyardbaseballforyoungins That seems rather trivial, but it's a question. If you're going with the feature branch paradigm, how do you name your feature branches? After the feature itself in plain English? Some sort of versioning scheme? I.e. say you want to add functionality to the Backyard Baseball app that allows users to add their own statistics. What would you call your branch? {repoName}/branches/user-add-statistics {repoName}/branches/userAddStatistics {repoName}/branches/user_add_statistics etc. Or: {repoName}/branches/1.1.0.1 If you go the version route, how do you correlate the version numbers? It seems that feature branches wouldn't benefit much from a versioning schema, being that 1 developer could be working on the "user add statistics" functionality, and another developer could be working on the "admin add statistics" functionality. How are these do branch versions named? Are they better off being: {repoName}/branches/1.1.0.1 - user add statistics {repoName}/branches/1.1.0.2 - admin add statistics And once they're merged into the trunk, the trunk might increment appropriately? Tags seem like they'd benefit the most from version numbers. With that being said, how are you correlating the versions for your project (whether it be trunk, branch, tag, etc.) with SVN? I.e. how do you, as the developer, know that 1.1.1 has admin add statistics, and user add statistics functionality? How are these descriptive and linked? It'd make sense for tags to have release notes in each tag since they're immutable. But, yeah, what are your SVN policies going forward?

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  • Smart client software factory view activation problem

    - by vinay
    Hi, Im using smart client software factory in our application i created one workspace dynamically,based on that i can create n numbers of views.the view is modal dialog and i have used some window workspace. but the problem is i have to implement save all fuctionalities in menu. but i dont know which view is activated/focused How to get the focused screen,is their any event will fore if on focus change. Please help on this aspect. Thanks , Vinay

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  • Android: How can i access email addresses in android

    - by Maxood
    I have the following code through which i am able to retrieve phone numbers. Somehow , i am not able to retrieve email addresses by using android.provider.Contacts.People API. Any ideas? import android.app.AlertDialog; import android.app.ExpandableListActivity; import android.content.ContentUris; import android.content.Context; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.Contacts.People; import android.view.View; import android.widget.ExpandableListAdapter; import android.widget.SimpleCursorTreeAdapter; import android.widget.TextView; import android.widget.ExpandableListView.OnChildClickListener; public class ShowContacts extends ExpandableListActivity implements OnChildClickListener { private int mGroupIdColumnIndex; private String mPhoneNumberProjection[] = new String[] { People.Phones._ID, People.NUMBER // CHANGE HERE }; private ExpandableListAdapter mAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Query for people Cursor groupCursor = managedQuery(People.CONTENT_URI, new String[] {People._ID, People.NAME}, null, null, null); // Cache the ID column index mGroupIdColumnIndex = groupCursor.getColumnIndexOrThrow(People._ID); // Set up our adapter mAdapter = new MyExpandableListAdapter(groupCursor, this, android.R.layout.simple_expandable_list_item_1, android.R.layout.simple_expandable_list_item_1, new String[] {People.NAME}, // Name for group layouts new int[] {android.R.id.text1}, new String[] {People.NUMBER}, // AND CHANGE HERE new int[] {android.R.id.text1}); setListAdapter(mAdapter); } public class MyExpandableListAdapter extends SimpleCursorTreeAdapter { public MyExpandableListAdapter(Cursor cursor, Context context, int groupLayout, int childLayout, String[] groupFrom, int[] groupTo, String[] childrenFrom, int[] childrenTo) { super(context, cursor, groupLayout, groupFrom, groupTo, childLayout, childrenFrom, childrenTo); } @Override protected Cursor getChildrenCursor(Cursor groupCursor) { // Given the group, we return a cursor for all the children within that group // Return a cursor that points to this contact's phone numbers Uri.Builder builder = People.CONTENT_URI.buildUpon(); ContentUris.appendId(builder, groupCursor.getLong(mGroupIdColumnIndex)); builder.appendEncodedPath(People.Phones.CONTENT_DIRECTORY); Uri phoneNumbersUri = builder.build(); return managedQuery(phoneNumbersUri, mPhoneNumberProjection, null, null, null); } } @Override public boolean onChildClick(android.widget.ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { AlertDialog dialog = new AlertDialog.Builder(ShowContacts.this) .setMessage(((TextView) v).getText().toString()) .setPositiveButton("OK", null).create(); dialog.show(); return true; } }

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  • Code Chess: Fibonacci Sequence

    - by SLaks
    Building upon the proven success of Code Golf, I would like to introduce Code Chess. Unlike Code Golf, which strives for concision, Code Chess will strive for cleverness. Can you create a clever or unexpected Fibonacci generator? Your code must print or return either the nth Fibonacci number or the first n Fibonacci numbers.

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  • Math.max and Math.min outputting highest and lowest values allowed

    - by user1696162
    so I'm trying to make a program that will output the sum, average, and smallest and largest values. I have everything basically figured out except the smallest and largest values are outputting 2147483647 and -2147483647, which I believe are the absolute smallest and largest values that Java will compute. Anyway, I want to compute the numbers that a user enters, so this obviously isn't correct. Here is my class. I assume something is going wrong in the addValue method. public class DataSet { private int sum; private int count; private int largest; private int smallest; private double average; public DataSet() { sum = 0; count = 0; largest = Integer.MAX_VALUE; smallest = Integer.MIN_VALUE; average = 0; } public void addValue(int x) { count++; sum = sum + x; largest = Math.max(x, largest); smallest = Math.min(x, smallest); } public int getSum() { return sum; } public double getAverage() { average = sum / count; return average; } public int getCount() { return count; } public int getLargest() { return largest; } public int getSmallest() { return smallest; } } And here is my tester class for this project: public class DataSetTester { public static void main(String[] arg) { DataSet ds = new DataSet(); ds.addValue(13); ds.addValue(-2); ds.addValue(3); ds.addValue(0); System.out.println("Count: " + ds.getCount()); System.out.println("Sum: " + ds.getSum()); System.out.println("Average: " + ds.getAverage()); System.out.println("Smallest: " + ds.getSmallest()); System.out.println("Largest: " + ds.getLargest()); } } Everything outputs correctly (count, sum, average) except the smallest and largest numbers. If anyone could point me in the right direction of what I'm doing wrong, that would be great. Thanks.

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  • How to filter a character stream from an application using PowerShell?

    - by Christian
    A powershell question: I want to extract each line in a character stream produced by an application that matches a certain pattern which in pseudo-code would be something like this: PS <a_ps_command> <the_application_command_for_outputting_the_text_stream> | <my_filter > output_file.txt In my case the application is a CM-tool that outputs the change history of a source file and the (psuedo)pattern should be something like: <a couple of numbers><a name><a time stamp><a line of characters> Cheers, Christian

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  • [C++] Index strings by other strings

    - by mcco
    Hello, I need to index specific strings with other strings and I can't really find a good way to do so. I tried to use tr1::unordered_map, but I'm having some difficulties using it. If someone could tell me what is the best way to do that I'd be really grateful :) I also need to index objects by a number (numbers are not in order so I can't use a vector)

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  • What are interesting ideas for experimenting with Artificial Neural Networks?

    - by Gerald Kaszuba
    I'm after a list of possible neural network implementations that one can do to learn how to use it. What other possibilities are there? Here's the list so far: Games tic-tac-toe Connect 4 Chess Go Visual recognition Character recognition (typefaces, letters, numbers, etc) Facial recognition Audio recognition Language detection Male vs female Word recognition Language detection (natural, programming)

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  • Given year, month and day, all in int, how would I generate an NSDate

    - by BU
    I think the solution is really simple, I just haven't come across it online. Suppose I am given int year, int month, int day, int hour, int min, int sec.. how do I generate NSDate out of it? I know we can use [NSDate initWithString:] but I think it gets complicated if month/day/hour/min/sec are one digit numbers. Thanks in advance for your help.

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  • strings and textfields, AS3

    - by VideoDnd
    How do I get my text fields to populate correctly and show single digits? Description Each textfield receives a substring. This doesn't limit it's input, because the text fields shows extra numbers. See illustration. Ex A //Tweening method 'could substitute code with Tweener' import fl.transitions.Tween; import fl.transitions.easing.*; //Timer that will run a sec and repeat var timer:Timer = new Timer(1000); //Integer values var count:int = +220000000; var fcount:int = 0; //Events and starting timer timer.addEventListener(TimerEvent.TIMER, incrementCounter); addEventListener(Event.ENTER_FRAME, checkOdometerPosition); timer.start(); //Tween Variables var smoothLoop:int = 0; var originalYPosition:Number = 0; var upwardYPosition:Number = -99; //Formatting String function formatCount(i:int):String { var fraction:int = i % 100; var whole:int = i / 100; return ("0000000" + whole).substr(-7, 7) + "." + (fraction < 10 ? "0" + fraction : fraction); } //First Digit 'trigger set by using var upwardPosition as a constant' function checkOdometerPosition(event:Event):void{ if (seconds9.y <= upwardYPosition){ var toText:String = formatCount(fcount); //seconds9.firstDigit.text = formatCount(fcount); seconds9.firstDigit.text = toText.substr(9, 9); seconds9.y = originalYPosition; seconds8.firstDigit.text = toText.substr(8, 8); seconds8.y = originalYPosition; seconds7dec.firstDigit.text = toText.substr(7, 7); seconds7dec.y = originalYPosition; seconds6.firstDigit.text = toText.substr(6, 6); seconds6.y = originalYPosition; seconds5.firstDigit.text = toText.substr(5, 5); seconds5.y = originalYPosition; seconds5.firstDigit.text = toText.substr(4, 4); seconds5.y = originalYPosition; seconds3.firstDigit.text = toText.substr(3, 3); seconds3.y = originalYPosition; seconds2.firstDigit.text = toText.substr(2, 2); seconds2.y = originalYPosition; seconds1.firstDigit.text = toText.substr(1, 1); seconds1.y = originalYPosition; seconds1.firstDigit.text = toText.substr(1, 1); seconds1.y = originalYPosition; seconds0.firstDigit.text = toText.substr(0, 1); seconds0.y = originalYPosition; } } //Second Digit function incrementCounter(event:TimerEvent):void{ count++; fcount=int(count) if (smoothLoop < 9){ smoothLoop++; } else { smoothLoop = 0; } var lolly:String = formatCount(fcount-1); //seconds9.secondDigit.text = formatCount(fcount); seconds9.secondDigit.text = lolly.substr(9, 9); var addTween9:Tween = new Tween(seconds9, "y", Strong.easeOut,0,-222, .7, true); seconds8.secondDigit.text = lolly.substr(8, 8); var addTween8:Tween = new Tween(seconds8, "y", Strong.easeOut,0,-222, .7, true); seconds7dec.secondDigit.text = lolly.substr(7, 7); var addTween7dec:Tween = new Tween(seconds7dec, "y", Strong.easeOut,0,-222, .7, true); seconds6.secondDigit.text = lolly.substr(6, 6); var addTween6:Tween = new Tween(seconds6, "y", Strong.easeOut,0,-222, .7, true); seconds5.secondDigit.text = lolly.substr(5, 5); var addTween5:Tween = new Tween(seconds5, "y", Strong.easeOut,0,-222, .7, true); seconds4.secondDigit.text = lolly.substr(4, 4); var addTween4:Tween = new Tween(seconds4, "y", Strong.easeOut,0,-222, .7, true); seconds3.secondDigit.text = lolly.substr(3, 3); var addTween3:Tween = new Tween(seconds3, "y", Strong.easeOut,0,-222, .7, true); seconds2.secondDigit.text = lolly.substr(2, 2); var addTween2:Tween = new Tween(seconds2, "y", Strong.easeOut,0,-222, .7, true); seconds1.secondDigit.text = lolly.substr(1, 1); var addTween1:Tween = new Tween(seconds1, "y", Strong.easeOut,0,-222, .7, true); seconds0.secondDigit.text = lolly.substr(0, 1); var addTween0:Tween = new Tween(seconds0, "y", Strong.easeOut,0,-222, .7, true); } Ex A has 10 text objects, each with a pair of text fields. It’s move complex than Ex B, because it has a Y animation and pairs of numbers. The text objects are animated to create a scrolling effect. It moves vertically, and has a lead number and a catch up number contained in each symbol. See illustration for more description. The counters are set to 2,200,000.00, just to see if the numbers are populating. Ex B work fine! for example only //STRING SPLITTER COUNTER with nine individual text fields //Timer settings var delay:uint = 1000/100; var repeat:uint = 0; var timer:Timer; timer = new Timer(delay,repeat); timer.addEventListener(TimerEvent.TIMER, incrementCounter); timer.start(); //Integer values var count:int = 0; var fcount:int = 0; //Format Count function formatCount(i:int):String { var fraction:int = i % 100; var whole:int = i / 100; return ("0000000" + whole).substr(-7, 7) + "." + (fraction < 10 ? "0" + fraction : fraction); } //Split strings off to individual text fields function incrementCounter(event:TimerEvent) { count++; fcount=int(count+220000000) var toText:String = formatCount(fcount); mytext9.text = toText.substr(9, 9); mytext8.text = toText.substr(8, 8); mytext7dec.text = toText.substr(7, 7); mytext6.text = toText.substr(6, 6); mytext5.text = toText.substr(5, 5); mytext4.text = toText.substr(4, 4); mytext3.text = toText.substr(3, 3); mytext2.text = toText.substr(2, 2); mytext1.text = toText.substr(1, 1); mytext0.text = toText.substr(0, 1); } Here's a link to the files

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  • IE6 the last three characters in a div are being repeated else where in the page? really weird

    - by Jason
    Hey, Basically i have an issues (in IE6) where the last three characters of a line of text in a div are being repeated further down the page even though they are only in the HTML once. http://www.disturbmedia.com/jason/test/ please see the numbers in black, its always the last three characters that get repeated, so strange. I have never seen this before, its only in IE6? Anyone have any info?! Am super confused as to how this is happening. Thanks Jason

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  • Calculating the square of BigInteger

    - by brickner
    Hi, I'm using .NET 4's System.Numerics.BigInteger structure. I need to calculate the square (x^2) of very large numbers. If x is a BigInteger, What is the time complexity of: x*x; or BigInteger.Pow(x,2); ? If it's worse than O(n^2), do you have a better implementation? Maybe something like Schönhage–Strassen algorithm?

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