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• How to replace the characters in fixed positions in PHP?

  - by user198729

  I want to replace with the 4~8 characters of a string with *,how to do it? HelloWorld => Hell****ld

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• how to properly display utf encoded characters on my utf-8 encoded page?

  - by Ali

  Hi guys I'm retrieving emails and some of my emails have utf encoded text. However even though my page is encoded as utf 8 - in some places when I try to out put utf text I get funny characters like : =?utf-8?B?Rlc6INqp24zYpyDYotm+INin2LMg2YXYs9qp2LHYp9uB2bkg2qnbjCDZhtmC?= =?utf-8?B?2YQg2qnYsdiz2qnYqtuSINuB24zaug==?= Whereas in other areas of the same page it displays fine. WHats going on?

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• Is 80 characters per line guideline still importan these days?

  - by bgbg

  With higher resolution on our monitors, better editors, wider monitors, longer programs (that are printed out less frequently) and higher environmental awareness, how important is the convention to keep code lines at 80 characters limit?

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• Help to understand and recode javascript function to deal with special characters.

  - by Cesar Lopez

  Hi all, I am trying to rewrite a javascript function since I was told this function its a bit nasty peace of code and it could be nicely written by a very kind user from here. I have been trying to understand what the function does, therefore I could rewrite it properly, but since I dont fully understand how it works its a very difficult task. Therefore I am looking for help and directions (NOT THE SOLUTION AS I WANT TO LEARN MYSELF) to understand and rewrite this function in a nicer way. The function its been made for dealing with special characters, and I know that it loops through the string sent to it, search for special characters, and add what it needs to the string to make it a valid string. I have been trying to use value.replace(/"/gi,"/""), but surely I am doing it wrong as it crashes. Could anybody tell me where to start to recode function? Any help would be appreciated. My comments on the function are in capital letters. Code <script type="text/javascript"> function convertString(value){ for(var z=0; z <= value.length -1; z++) { //if current character is a backslash||WHY IS IT CHECKING FOR \\,\\r\\n,and \\n? if(value.substring(z, z + 1)=="\\" && (value.substring(z, z + 4)!="\\r\\n" && value.substring(z, z + 2)!="\\n")) {//WHY IS IT ADDING \\\\ TO THE STRING? value = value.substring(0, z) + "\\\\" + value.substring(z + 1, value.length); z++; } if(value.substring(z, z + 1)=="\\" && value.substring(z, z + 4)=="\\r\\n") {//WHY IS IT ADDING 4 TO Z IN THIS CASE? z = z+4; } if(value.substring(z, z + 1)=="\\" && value.substring(z, z + 2)=="\\n") {//WHY IS IT ADDING 2 TO Z IN THIS CASE? z = z+2; } } //replace " with \" //loop through each character for(var x = 0; x <= value.length -1; x++){ //if current character is a quote if(value.substring(x, x + 1)=="\""){//THIS IS TO FIND \, BUT HAVENT THIS BEEN DONE BEFFORE? //concatenate: value up to the quote + \" + value AFTER the quote||WHY IS IT ADDING \\ BEFORE \"? value = value.substring(0, x) + "\\\"" + value.substring(x + 1, value.length); //account for extra character x++; } } //return the modified string return(value); } <script> Comments within the code on capital letters are my questions about the function as I mention above. I would appreciate any help, orientation, advise, BUT NOT THE SOLUTION PLEASE AS I DO WANT TO LEARN.

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• Can base64 encoding applied to multibyte utf-8 characters ?

  - by cppdev

  Can base64 encoding applied to multibyte utf-8 characters ? How base64 encoded string is converted back to multibyte utf-8 string ?

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• Is there a valid reason for enforcing a maximum width of 80 characters in a code file, this day and

  - by TraumaPony

  Seriously. On a 22" monitor, it only covers maybe a quarter of the screen. I need some ammo to axe down this rule. Edit: I'm not saying that there shouldn't be a limit; I'm just saying, 80 characters is very small.

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• Best practice to handle non-english characters is ruby?

  - by ragnarius

  Hi! My program file is encoded in utf-8 so "abc".length==3 but "åäö".length==6. I realize that å,ä,ö, are stored as two bytes in utf-8, and that a ruby String is a sequence of bytes (not characters), but it is annoying! Is there a best practice to work around this problem?

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• Best practice to handle non-english characters in Ruby?

  - by ragnarius

  My program file is encoded in UTF-8 so "abc".length == 3 but "åäö".length == 6. I realize that å, ä, ö, etc. are stored as two bytes in UTF-8, and that a Ruby String is a sequence of bytes (not characters), but it is annoying! Is there a best practice to work around this problem?

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• how to restrict textinput to accept all (including special characters) except numbers?

  - by zombiegx

  I have a text field (for names) wich must allow all characters, except latin numbers, is this possible? I can't think of a regex for this thanks

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• Reading multipart and text messages using Zend framework - funny characters?

  - by Ali

  Hi guys I've shifted to using the zend framework for reading messages from an inbox however when reading some html messages I see a lot of weird charcters like: don’t looks like don=92t Plus other weird characters like =20 .. whats going on? Is it an ecoding issue? How do I fix it?

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• What are the valid characters for a Mime Multipart message ContentId "CID:" ?

  - by mP

  From reading the RFC it appears that CID can/must only contain characters from the same set as those permissable by a regular URI. Is this correct. Im asking because I wish to writeup a simple helper that takes a CIDs prefix and adds a counter when generating CID for mime multitypes attachments.

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• In Python, how do I create a string of n characters in one line of code?

  - by Thierry Lam

  I need to generate a string with n characters in Python. Is there a one line answer to achieve this with the existing Python library? For instance, I need a string of 10 letters: string_val = 'abcdefghij'

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• A rapid way to type funny characters from Scalaz ?

  - by Green Hyena

  Is there any easy and fast way to type the funny characters (like ??, ??, ??, ?? etc) from Scalaz? (I am using Ubuntu 9.04)

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• How to find out if string contains non-alpha numeric characters in C#/.NET 2.0?

  - by matti

  Allowed characters are (at least) A-Z, a-z, 0-9, ö, Ö, ä, ä, å, Å and german, latvian, estonian (if any) special chars? Is there ready-made method or do i have to make blacklist (non-allowed chars) and regular expressions IsMatch? If no ready-made how to use blacklist? Cheers & BR -Matti

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• how to convert an array of characters in c to a string so as to do string operations on it?

  - by mekasperasky

  suppose there is a string of characters in an array of d[20] . How to convert to a string d so that i can use it in string functions like strcmp..

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• Regex - What would be regex for matching foreign characters ?

  - by Rachel

  Hi, I am dealing with developing and Application for European Client and they have their native character set. Now I need to have regex which would allow foreign characters like eéèêë etc and am not sure of how this can be done. Any Suggestions ?

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• In Lucene, using a Standard Analyzer, I want to make fields with spaces and special characters searc

  - by Matt

  In Lucene, using a Standard Analyzer, I want to make fields with spaces and special characters(underscore,!,@,#,....) searchable. I set IndexField to NOT_ANALYZED_NO_NORMS and Field.Store.YES When I look at my index in LUKE, the fields are as I expected, a value such as: 'SKU Number', yet when I search for 'SKU' or 'SKU*' nothing comes up. What am I missing?

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• How to concatenate two unicode characters in DotNet and not have any space?

  - by OutOFTouch

  When I concatenate the following two unicode characters I see both but there is a space between them. Is there anyway to get rid of this space? StringBuilder sb = new StringBuilder(); int characterCode; characterCode = Convert.ToInt32("2758", 16); sb.Append((char)characterCode); characterCode = Convert.ToInt32("25c4", 16); sb.Append((char)characterCode);

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• How to find smallest substring which contains all characters from a given string?

  - by Rajendra

  I have recently come across an interesting question on strings. Suppose you are given following: Input string1: "this is a test string" Input string2: "tist" Output string: "t stri" So, given above, how can I approach towards finding smallest substring of string1 that contains all the characters from string 2?

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• What are the valid URL characters that can be used in a query variable?

  - by DutrowLLC

  What are the valid characters that can be used in a URL query variable? I'm asking because I would like to create GUIDs of minimal string length by using the largest character set so long as they can be passed as a URL query variable (www.StackOverflow.com?query=guiddaf09834fasnv)

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• How do I make a textbox take only numeric characters using jQuery?

  - by sadmicrowave

  I need to make a textbox that only allows numeric characters. I've looked through several numeric plugins and can't find one that I like. I'm looking for either a plugin recommendation with the associated URL or syntax showing how to get started on making my own plugin.

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• how many characters should i limit a thread body to?

  - by fayer

  im using doctrine and need to specify the length of a thread body (datatype: blob). i wonder how many characters i should limit the user to type for a thread body? what is normal? thanks!

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• How to write a regular expression for excluding some special characters from string?

  - by Akshay

  I want to exclude the following characters from my string: \-- ' < > Please tell me how to write a regular expression for this.

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• Twitter Search API is returning weird characters - is it more or is it them?

  - by DanSingerman

  We are building an app that accesses the Twitter search over JSONP. It mostly works fine, but occasionally the request returns a JSONP callback that exists of weird unparseable characters. Here is an example: http://search.twitter.com/search.json?result_type=recent&rpp=100&geocode=51.4375857,-0.1658648,1km&page=5&callback=jsonp1272532482854 (If you change page=5 to a value less than 5 in the URL it works fine) So Am I doing something wrong? Can anyone suggest a workaround?

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• php file_get_contents().. doesn't handle special characters?

  - by inktri

  I've got an HTML file with special characters such as: AT&T™ Official Site When I use file_get_contents() on the file and echo the contents, I get something like this: AT&T\u00e2\u0084\u00a2 Official Site How can I convert the latter to the former?

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