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• Dynamic Text limit when users writes in a textbox (HTML)

  - by DomingoSL

  Hello, I need to implement in Html/javascript (or php is possible) a script which works like twitter, when the user writes text in a field a label change showing the characters left. Can you help me with a simple and easy script example?

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• matrices&searching [closed]

  - by gcc

  question 1) between different characters&real numbers , finding specific one how could i do question 2) myfriend asked me a good question : can we divide two matrices to each other // in math , we havenot learned but maybe someone knows where we find the answer

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• what is the regular expression for this

  - by bn

  I want to parse this (adv) much (thanks) I want to eliminate the words and the bracket (adv) but not (thanks) the condition is: inside bracket, and word length inside bracket is 1-5 characters I am using preg_match in PHP Thank You

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• When does the @ become usefull?

  - by DaNieL

  As you know, the @ characters before a php istruction suppress every eventual warning, error or notice from being raised. Personally, i dont like this tecnique, becose i prefer to handle those errors, and in a real life, the error must no happen or have to be managed. By the way, i find this tecnique to be applied in many scripts (cms plugins, open-source classes). So, could the @ really be usefull (in this case, an example would be appreciated), or is just for lazy developers?

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• Is it a good idea to use unicode symbols as Java identifiers?

  - by Eric

  I have a snippet of code that looks like this: double ?t = lastPollTime - pollTime; double a = 1 - Math.exp(-?t / t); average += a * (x - average); Just how bad an idea is it to use unicode characters in Java identifiers? Or is this perfectly acceptable?

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• Lining up content in divs without table cells

  - by Mike

  Hi, I have two rows of links like: Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7 LInk 8 I need the top four links to align with the top bottom links regardless of how many characters are in the link. For example, This is link 1 This is link 2 Link 3 L4 LInk 1 Link 2 that is longer Link 3 L4 I can do this with tables and td cells but how can this be accomplished just using divs? Thanks.

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• # character seems to cause problems with a get Request

  - by Ankur

  I have a queryString that I pass to a servlet's doGet() method that looks like this: count=9&preId0=-99&objId0=-99&preId1=-99&objId1=-99&preId2=69&objId2=16#!78&preId3=-99&objId3=-99&preId4=-99&objId4=-99&preId5=-99&objId5=-99&preId6=-99&objId6=-99&preId7=-99&objId7=-99&preId8=-99&objId8=-99 After and including the # everything is null, so I am assuming the # has some special meaning. Is this true? and are there other such characters that will do this?

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• Can I suppress or enforce URLs to be prefaced with http:// in ALL browsers?

  - by Ryan Dunlap

  I want to ensure that regardless of what browser a user is in, they all see the EXACT same characters in the URL bar. Most browsers show the preceding protocol type in the URL bar. However, Chrome for example truncates http:// (not sure about https) and starts with the domain name, ie: Chrome: stackoverflow.com/questions/ask Safari: http://stackoverflow.com/questions/ask So, is there a way to either suppress the http:// in all browsers, or even enforce it in all browsers? Preferably suppress.

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• another way to suggest combobox item

  - by aliassad

  Hi there .. Is there any way to let combobox suggest elements which not only start with combobox text? I mean even if the combobox text has space between it's characters, for example if combobox has these items hello hi hellothere when we try to type "he" or "h e" or "h e", the combobox would suggest hello and hellothere

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• Remove spaces from std::string in C++

  - by Steve Hanov

  What is the preferred way to remove spaces from a string in C++? I could loop through all the characters and build a new string, but is there a better way?

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• JavaScript function to validate an integer value

  - by Psyche

  Hello, I'm building a shopping cart and I would like to use a JavaScript function to validate user input when entering the quantity value in the quantity text input. I would like to allow the entering of integer values only (no floats, no other characters). I know that I can apply this function using onKeyUp event and also I found isNaN() function, but it returns true even for floats (which is not ok). Can you guys help me out with this one? Thanks.

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• Yet another hard algorithm problem in OCR(image pattern recognization)

  - by user198729

  It's part of the process of OCR,which is : How to segment the sentences into words,and then characters? What's the candidate algorithm for this task?

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• Java code compression and decompression of a string

  - by user1822710

  I am having a problem figuring how to check a string for the same characters in a row then count that same character in a row then printing it out then giving the location of the last occorance of that character count then printing it out then moving to the next character in the string that is different then the previous character and the program is case sensitive. So the input could be: aaaaAAAbbbddccc How would I compress this string to: a4A3b3d2c3 ? and then decompress it?

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• Data types for validation

  - by nevalu

  How to create a new data type which to can check/validate its schema when is created a new variable (of that type)? By example, to validate if a string has 20 characters, I tried: {{{ // Format: 2006-01-12T06:06:06Z func date(str string) { if len(str) != 20 { fmt.Println("error") } } var Date = date() type Account struct { domain string username string created Date } }}} but it faills because Date is not a type.

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• CodeMirror 2 - (readonly and editable code)

  - by Happy Hacking

  Can CodeMirror 2 be used to set part of the code to be uneditable? I do not wish to do it like fully editable code. Example: Code inline: example public static void main(String args[]){ //content } I hope to be able to make Line 1 and 3 uneditable BUT able to edit lines in between them adding characters/spaces increasing the number of lines inside the method as we speak AND still unable to edit the starting and closing bracket lines.

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• How to send stream data via Bluetooth from an iPhone/iPod Touch to a Windows C++ application?

  - by PLinhol

  Hello, I need to develop an iPhone/iPod Touch application that creates a server to send some data stream (characters or bytes) to a Windows C++ application via Bluetooth. I'm thinking of creating a TCP connection, but don't know where to start. What iPhone API should I use do to something like this? Does anyone knows some code examples that i can use to do this? And in Windows, what should I use to support this kind of communication? Thanks

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• Regular expression - starting and ending with a letter, accepting only letters, numbers and _

  - by jreid9001

  I'm trying to write a regular expression which specifies that text should start with a letter, every character should be a letter, number or underscore, there should not be 2 underscores in a row and it should end with a letter or number. At the moment, the only thing I have is ^[a-zA-Z]\w[a-zA-Z1-9_] but this doesn't seem to work properly since it only ever matches 3 characters, and allows repeated underscores. I also don't know how to specify requirements for the last character.

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• reading a file word by word

  - by nalbina

  I can read from a file 1 character at a time, but how do i make it go just one word at a time? So, read until there is a space and take that as a string. This gets me the characters: while (!fin.eof()){ while (fin f ){ F.push_back ( f ); }

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• Cooler ASCII Spinners?

  - by Jason

  In a console app, an ascii spinner can be used, like the GUI wait cursor, to indicate that work is being done. A common spinner cycles through these 4 characters: '|', '/', '-', '\' What are some other cyclical animation sequences to spice up a console application?

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• Ruby Win32Api get single character non-blocking

  - by Markus Orreilly

  I'm trying to write a simple game working with two threads, one thread to get input from the user, and another thread to animate some scenes. I'm able to get characters without pressing ENTER just fine, but it blocks in the animating thread until the user presses a key. Does anyone know of a way to get a character from the keyboard non-blocking?

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• highlight dicritic arabic text

  - by user602720

  hi this plugin to highlight words but I'm trying to highlight diacritic arabic word like this example : jsfiddle.net/z8PUG/84/ but its not working i tested for three arabic characters '?': '[\u0645\u064b\20\u0645\u064c\20\u0645\u064d\20\u0645\u064e\20\u0645\u064f\20\u0645\u0650\20\u0645\u0651\20\u0645\u0652\20\u0645\u0653]', '?': '[\u062d\u064b\20\u062d\u064c\20\u062d\u064d\20\u062d\u064e\20\u062d\u064f\20\u062d\u0650\20\u062d\u0651\20\u062d\u0652\20\u062d\u0653]', '?': '[\u062f\u064b\20\u062f\u064c\20\u062f\u064d\20\u062f\u064e\20\u062f\u064f\20\u062f\u0650\20\u062f\u0651\20\u062f\u0652\20\u062f\u0653]',

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• ASP.NET MVC - Adding querystring "length=" to ActionLinks?

  - by ScottG

  I have a few ActionLinks that when rendered are getting a length key/value added that appears to indicate the number of characters of the controller name. How can this be removed?

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• Is it alright to call len() in a loop's conditional statement?

  - by DormoTheNord

  In C, it is considered bad practice to call strlen like this: for ( i = 0; strlen ( str ) != foo; i++ ) { // stuff } The reason, of course, is that it is inefficient since it "counts" the characters in a string multiple times. However, in Python, I see code like this quite often: for i in range ( 0, len ( list ) ): # stuff Is this bad practice? Should I store the result of len() in a variable and use that?

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• Getting a substring in Ruby by x number of chars

  - by wotaskd

  I'm trying to produce some Ruby code that will take a string and return a new one, with a number x number of characters removed from its end - these can be actual letters, numbers, spaces etc. Ex: given the following string a_string = "a1wer4zx" I need a simple way to get the same string, minus - say - the 3 last digits. In the case above, that would be "a1wer". The way I'm doing it right now seems very convoluted: an_array = a_string.split(//,(a_string.length-2)) an_array.pop new_string = an_array.join Any ideas?

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• Jquery with & , + and etc signs

  - by Loon Yew

  function testing() { $.ajax({ type: "POST", url: "testing.php", data: "call="+$("#abc").val(), success: function(msg){ alert( msg ); } }); } I want to post the data to testing.php but if i got special characters like & sign. it will create the problem. How do i go about it? Thank You

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