exists (4,790)


javascript - How to detect which one of the defined font was used in a web page?

javascript - How to detect which one of the defined font was used in a web page?

Suppose I have the following CSS rule in my page: body{font-family: Calibri, Trebuchet MS, Helvetica, sans-serif;}How can I detect which one of the defined fonts was used in the user's browser? Edit f…


What's the best way to determine if a temporary table exists in SQL Server?

When writing a T-SQL script that I plan on re-running, often times I use temporary tables to store temporary data. Since the temp table is created on the fly, I'd like to be able to drop that table…


How to enable Full-text Indexing in SQL Server 2005 Express?

I am trying to enable Full-text indexing in SQL Server 2005 Express. I am running this on my laptop with Vista Ultimate. I understand that the standard version of SQL Server Express does not have ful…



Insert Update stored proc on SQL Server

I've written a stored proc that will do an update if a record exists, otherwise it will do an insert. It looks something like this: update myTable set [email protected], [email protected] where [email protected] if @@rowcount…


Find broken symlinks with Python

If I call os.stat() on a broken symlink, python throws an OSError exception. This makes it useful for finding them. However, there are a few other reasons that os.stat() might throw a similar excepti…


Difference between EXISTS and IN in SQL?

What is the difference between the EXISTS and IN clause in SQL? When should we use EXISTS,and when should we use IN ?…


bash - RSync only if filesystem is mounted

I want to setup a cron job to rsync a remote system to a backup partition, something like: bash-c 'rsync-avz--delete--exclude=proc--exclude=sys [email protected]://mnt/remote1/' I would like to be a…


validation - Email SMTP validator

I need to send hundreds of newsletters, but would like to check first if email exists on server. It's called SMTP validation, at least I think so, based on my research on Internet. There's several…


javascript - Detecting an undefined object property

What's the best way of checking if an object property in JavaScript is undefined?…


javascript - Is there an “exists” function for jQuery?

How can I check the existence of an element in jQuery? The current code that I have is this: if($(selector).length>0){// Do something}Is there a more elegant way to approach this? Perhaps…




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