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• How to check if a Textarea is empty in Javascript or Jquery?

  - by streetparade

  How do i check if a textarea contains nothing? I tryed with this code if(document.getElementById("field").value ==null) { alert("debug"); document.getElementById("field").style.display ="none"; } But it doesnt do what i expect. I expect that it should appear a messagebox "debug" and that the textarea is not shown. How can i fix that issue?

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• how to check download resumed or not in ASIHTTPRequest..?

  - by jeeva

  hi i am downloading file from server using ASIHTTPRequest in my iphone application but i am not getting any callbacks to know whether downloading resumed after i stopped and resume it again . any body now how to check the download resumed or not..

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• It's possible make an OCR in Python to check words...

  - by Shady

  in opened applications? I want to automate firefox in some web page and I don't have a way to "know" if the page already load completely or if it still loading... I was thinking about making an OCR to check the status bar... it's difficult ? For example, when the word DONE appears at the status bar, the program continues to the next command...

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• How to check if a file is a DLL?

  - by PierreBdR

  Given a file, I want to check if this is a DLL, or a shared object (Linux) or a dylib (Mac OS X), or something different. My main interest is differentiating executable and DLL on Linux and Mac OS X. For windows, the extension should be enough for my problem. I already checked that the magic number technique doesn't work for Linux as executable and shared objects both have the same number.

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• How to make and check a request with content-type as 'application/json'?

  - by kranthi

  hi all, In my asp.net page I have a webmethod which will return data in json.I would like to run this method only when the http request content-type is 'application/json'.I do not understand how do I make a request with content-type as 'application/json' and how to check if the request content-type is 'application/json'? Please help.. Thanks.

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• VB script + open Check BOX window in order to choose on of two quastions and put answer in to Answer

  - by yael

  Hi How to create check box window in VB script In order to choose on of the following questions and put the answer in to Answer parameter? ON LINE MODE OF LINE MODE THX Yael

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• How can I check if a filehandle is open in Perl?

  - by matt

  Is there a way to check if a file is already open in Perl? I want to have a read file access, so don't require flock. open(FH, "<$fileName") or die "$!\n" if (<FILE_IS_NOT_ALREADY_OPEN>); # or something like close(FH) if (<FILE_IS_OPEN>);

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• How to check if user submit Arabic words from a form?

  - by ronanray

  Hi Experts.. Is there any reliable way to check if user has entered Arabic words into a form and tries to submit it? Can Javascript handle this? Or, only server script like .NET can do this? I'm thinking that if possible the script should directly prevent the user from inputting Arabic words into the form and show an alert pop up. Please share any examples if you have any idea how to do it. Thanks

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• Algorithm: how to check intersections of recurring events definitions?

  - by glaz666

  The question comes from MS Outlook calendar behavior. Imagine I have two recurring events (starting from today): "each second Monday" and "every odd date". Is there any way to check intersections and/or find the first intersecting date algorithmically without brute-forcing over each date? Definitions can be made in CRON's notations or ICal notation. I think it doesn't matter. Are there any solutions for this in Gregorian calendar?

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• Easy way to check if item is in list?

  - by befall

  Hey guys, I'm writing a search algorithm in C++, and one of the things I need to do is have a few if statements that check cells above, below, left of, and right of. Each time a cell is found to be open and added to the stack, I want it added to a list of cells already checked. I want to be able to say in the if loop if(thisCell is not in checkedCells). Any simple ideas? Thanks!

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• How to write an algorithm to check if the sum of any two numbers in an array/list matches a given nu

  - by Bunny Rabbit

  How can I write an algorithm to check if the sum of any two numbers in an array/list matches a given number with a complexity of nlogn?

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• Write a program using a do while loop to check if the number entered by a user is a palindrome? [clo

  - by josef

  Write a program using a do while loop to check if the number entered by a user is a palindrome? Hint: A number is a palindrome if it is the same when it read in forward or backward direction e.g. if the number entered is 121 - it is palindrome if the number entered is 323 - it is palindrome if the number entered is 132 - it is not palindrome in c++

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• How does XmlSiteMapProvider check user to be in specific role?

  - by abatishchev

  I roll my own SiteMapProvider inheriting System.Web.XmlSiteMapProvider. I want to override logic of checking user to be in a role specified in siteMapNode's property roles: <siteMapNode url="Add.aspx?type=user" title="Add user" roles="admin" /> How can I do that? Which class's member does XmlSiteMapProvider call to check that if securityTrimmingEnabled="true"?

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• How does XmlSiteMapProvider check user to be in specified role?

  - by abatishchev

  I roll my own SiteMapProvider inheriting System.Web.XmlSiteMapProvider. I want to override logic of checking user to be in a role specified in siteMapNode's property roles: <siteMapNode url="Add.aspx?type=user" title="Add user" roles="admin" /> How can I do that? Which class's member does XmlSiteMapProvider call to check that if securityTrimmingEnabled="true"?

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• Sanity Check - will a stl::Container of new'd objects each be deleted when the container itself dies

  - by Michael Dorgan

  Title pretty much covers it. If I've added say 3 objects to a list and the list goes out of scope and dies, will it call delete on each entry before going out of scope? Pretty sure yes, but getting tired and need a sanity check.

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• Lazy loading dojo modules: does dojo check it's cache?

  - by Kniganapolke

  When evaluating dojo.require statements, dojo tracks which modules and resources have been required and doesn't download them many times, but takes them from cache. But what if I require a module lazily, for example, when a button is clicked, - does dojo check it's cache?

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• How to make Python check if ftp directory exists?

  - by Phil

  I'm using this script to connect to sample ftp server and list available directories: from ftplib import FTP ftp = FTP('ftp.cwi.nl') # connect to host, default port (some example server, i'll use other one) ftp.login() # user anonymous, passwd anonymous@ ftp.retrlines('LIST') # list directory contents ftp.quit() How do I use ftp.retrlines('LIST') output to check if directory (for example public_html) exists, if it exists cd to it and then execute some other code and exit; if not execute code right away and exit?

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• PHP Arrays: A good way to check if an array is associative or sequential?

  - by Wilco

  PHP treats all arrays as associative, so there aren't any built in functions. Can anyone recommend a fairly efficient way to check if an array contains only numeric keys? Basically, I want to be able to differentiate between this: $sequentialArray = array('apple', 'orange', 'tomato', 'carrot'); and this: $assocArray = array('fruit1' => 'apple', 'fruit2' => 'orange', 'veg1' => 'tomato', 'veg2' => 'carrot');

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• How does Java handle integer underflows and overflows and how would you check for it?

  - by KushalP

  How does Java handle integer underflows and overflows? Leading on from that, how would you check/test that this is occurring?

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• How to Check character font and replace it in Microsoft Word Add-In?

  - by riverstore

  I want to create an add-in for Word to convert between Vietnamese charsets but I don't how to scan each character in document and check it's font to convert (there are many charsets and fonts in VN) after has converted I want to replace origin character by the converted character.

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• Check if DataRow exists by column name in c#?

  - by waqasahmed

  I want to do something like this: private User PopulateUsersList(DataRow row) { Users user = new Users(); user.Id = int.Parse(row["US_ID"].ToString()); if (row["US_OTHERFRIEND"] != null) { user.OtherFriend = row["US_OTHERFRIEND"].ToString(); } return user; } However, I get an error saying US_OTHERFRIEND does not belong to the table. I want to simply check if it is not null, then set the value. Isn't there a way to do this?

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• How can I check if I made optimal mysql database?

  - by Donator

  Are there any ways to check whether my Mysql database and PHP script are optimal? I want to figure it out and fix if it's possible till I publish it on internet for many users. Thanks.

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• Is there a way to check if a variable is a Date in JavaScript?

  - by Kyle

  I was wondering if there is any way to check if an object is specifically a Date in JavaScript. isType returns object for Date, which isn't enough for this scenario. Any ideas? Thanks!

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• How do I check if my program has data piped into it.

  - by monkeyking

  Im writing a program that should read input via stdin, so I have the following contruct. FILE *fp=stdin; But this just hangs if the user hasn't piped anything into the program, how can I check if the user is actually piping data into my program like gunzip -c file.gz |./a.out #should work ./a.out #should exit program with nice msg. thanks

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• Shell scripting : Find file with the name 'error_log' and check sizes, remove if over a certain size

  - by Roy

  Hi guys, I am trying to create a shell script/command that find error_log files created by PHP, check their file sizes and remove them if over a certain size. I have only gotten as far as printing the files and file sizes with the code below for i in `locate -r 'error_log$'`;do echo "$i|" `stat -c %s $i`;done Can anyone help? Thanks in advance!

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