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  • OSX Weak Linking - check if a class exists and use that class

    - by psychotik
    I'm trying to create a universal iPhone app, but it uses a class defined only in a newer version of the SDK. The framework exists on older systems, but a class defined in the framework doesn't. I know I want to use some kind of weak linking, but any documentation I can find talks about runtime checks for function existence - how do I check that a class exists?

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  • How to check undefined javascript value in facebook?

    - by Murvinlai
    In normal javascript, I can check either if (i == undefined) or if (i === undefined) or the "typeof" however, within facebook, it will have the api_key append as the prefix in undefined. i.e. it will become if (a12345_i == a12345_undefined) which is NOT undefined so, what can I do to find out the variable is undefined or not?

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  • ASP.Net check value with DBNULL

    - by c11ada
    hey all, i have the following code foreach (DataRowView dr in Data) { if (dr == System.DBNull.Value) { nedID = 1; } } but i get the following error Operator '==' cannot be applied to operands of type 'System.Data.DataRowView' and 'System.DBNull' please can some one advice me on how i can check if the value is null or DBNULL

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  • Spell check in winforms

    - by j-t-s
    In my win forms c# app, I want to be able to add spell check functionality. But, I want to do it my own way, and NOT use any other components. All I need is just an online service where i can send a request or something and it tells me whether or not the word i sent was spelled correctly. Preferred but not required: The ability for that online sevrice to also send back suggestions.

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  • check params['Filedata'] in rails.

    - by krunal shah
    How to check that my params['Filedata'] is corrupted or not? I have function it's reading file from params['Filedata'] and writing it to the other file. File.open(upload_file, "wb") { |f| f.write(params['Filedata'].read) } this line working fine for me.. But when i am calling this function with delayed job funtion send_later than I am getting error with params['Filedata'].read.

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  • Need to check uptime on a large file being hosted

    - by trustfundbaby
    I have a dynamically generated rss feed that is about 150M in size (don't ask) The problem is that it keeps crapping out sporadically and there is no way to monitor it without downloading the entire feed to get a 200 status. Pingdom times out on it and returns a 'down' error. So my question is, how do I check that this thing is up and running

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  • how can we check filetypes (formats such as jpg) without using file extensions before _-uploading t

    - by LostLord
    hi my dear friends: how can we check filetypes (formats such as jpg) without using file extensions before -uploading them- in asp.net with c# ? i am using vs 2008 + asp.net + c# + TELERIK Controls (RadUpload) ========================================================================================= imagine that some body change the text file extension to jpg and select in in a upload conrol such as radupload ... how can we recognize this file is truly jpg or not? thanks a lot

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  • Check if access table exists

    - by HasanGursoy
    I want to log web site visits' IP, datetime, client and refferer data to access database but I'm planning to log every days log data in separate tables in example logs for 06.06.2010 will be logged in 2010_06_06 named table. When date is changed I'll create a table named 2010_06_07. But the problem is if this table is already created. Any suggestions how to check if table exists in Access?

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  • JavaScript check if anonymous object has a method

    - by Baddie
    How can I check if an anonymous object that was created as such: var myObj = { prop1: 'no', prop2: function () { return false; } } does indeed have a prop2 defined? prop2 will always be defined as a function, but for some objects it is not required and will not be defined. I tried what was suggested here: http://stackoverflow.com/questions/595766/how-to-determine-if-native-javascript-object-has-a-property-method but I don't think it works for anonymous objects .

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  • BASH Script to Check if a number is Armstrong or Not

    - by atif089
    Hi, I was writing a script to check if a number is Armstrong or not. This is my Code echo "Enter Number" read num sum=0 item=$num while [ $item -ne 0 ] do rem='expr $item % 10' cube='expr $rem \* $rem \* $rem' sum='expr $sum + $cube' item='expr $item / 10' done if [ $sum -eq $num ] then echo "$num is an Amstrong Number" else echo "$num is not an Amstrong Number" fi After I run this script, $ ./arm.sh I always get this error ./arm.sh: line 5: [: too many arguments ./arm.sh: line 12: [: too many arguments I am on cygwin.

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  • CHECK/NOCHECK for Sql Compact Edition

    - by Ryan H
    I am attempting to wipe and repopulate test data on SQL CE. I am getting an error due to FK constraints existing. Typically in Sql2005 I would ALTER TABLE [tablename] CHECK/NOCHECK CONSTRAINT ALL to enable/disable all constraints. From what I could find in my searching, it seems that this might not be supported in CE. Is that true? If so, is there an alternative?

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  • Check SuspendLayout

    - by norlando02
    Is there a way in C# to check if an object is suspend? I have a TreeView that I need to know if it is still suspend. myTreeView.BeginUpdate(); myTreeView.SuspendLayout(); // Do Stuff. myTreeView.EndUpdate(); myTreeView.ResumeLayout(); Because i have this code in a recursive function I want to know if the TreeView is already been suspended.

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  • Check for repeating dates.

    - by kylex
    I am creating a calendar in PHP and in the database have a date, let's say 6-10-10. Sometimes I have repeating events, stored as weekly repeating, so if the date is 6-10-10, and I am repeating an event every two weeks from that day (including that day) what is the best way to find dates for every two weeks from 6-10-10? For example, let's say the date is 7-8-10, how can I check to see that date meets my criteria?

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  • Check on null reference

    - by Neir0
    Hello, i have the follow code: searchResults.SearchResultCollection.Add( new SearchResult() { Header = HttpUtility.HtmlDecode( htmlDocument.DocumentNode .SelectSingleNode(initialXPath + "h3") .InnerText), Link = HttpUtility.HtmlDecode( htmlDocument.DocumentNode .SelectSingleNode(initialXPath + "div/cite") .InnerText) } ); Sometimes htmlDocument.DocumentNode.SelectSingleNode(....) returns null and my application crashed with NullReferenceException. Ofcourse i can write code which check returned value on null reference but then code will be overly verbose. What is graceful way to do that?

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