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jQuery checkbox change and click event
...lking 600k operations/sec. So, 600 times per millisecond. I think if this starts causing performance issues on your web page, you might need to re-eval your javascript ;) It is good to understand performance metrics with code, though. Thanks.
– Mike U
Jan 8 '...
How do I use the CONCAT function in SQL Server 2008 R2?
...ing concatenation.
Take a look at the MSDN reference with sample code. Starting with SQL 2012, you may wish to use the new CONCAT function.
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WCF on IIS8; *.svc handler mapping doesn't work
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More specifically:
Run Server Manager (on task bar and start menu)
Choose the server to administer (probably local server)
Scroll down to "Roles and Features" section.
Choose "Add Role or Feature" from Tasks drop down
On "Add Role or Feature Wizard" dialog, click down to "Feature...
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize
...rmGen which was limited by 32/64MB, and MaxPerGen was used to increase it. Starting from Java 8 however, PermGen is no more and class metadata space is unlimited, so MaxMetaspace size is actually used to decrease it. For more information see: stackoverflow.com/a/31463972/67824
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Devise Secret Key was not set
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I ran bundle update this morning and started getting the same error.
I added it as a line in config/initializers/devise.rb and the error was fixed.
This seems to be the commit which introduced it.
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How to simulate a click with JavaScript?
... There are also a lot of humans that wouldn't know where to start if they had to wash their clothes by hand, since the majority of households own a washer, and almost as many have a clothes dryer. jQuery, much like modern appliances, have made an old chore much easier and less error p...
How to execute mongo commands through shell scripts?
...tjson(db.serverStatus())"
Please note: if you are using Mongo operators, starting with a $ sign, you'll want to surround the eval argument in single quotes to keep the shell from evaluating the operator as an environment variable:
mongo --eval 'db.mycollection.update({"name":"foo"},{$set:{"this":...
An item with the same key has already been added
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I started getting this after I fiddled with some view models (added an Id property). The fault was that the JS was already putting an "id" (lowercase id) onto the object for some UI management, but when submitting, the JSON obj...
'adb' is not recognized as an internal or external command, operable program or batch file
...es. You can find adb in "ADT Bundle/sdk/platform-tools" Set the path and restart the cmd n then try again.
Or
You can also goto the dir where adb.exe is located and do the same thing if you don't wanna set the PATH.
If you wanna see all the paths, just do
echo %PATH%
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How can I convert a string to a number in Perl?
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Beware when adding zero to a string. If the string starts with "inf" or with "nan", the value will not be zero. E.g. my $var2 = "info123"; print $var2 + 0: Result will be: Inf
– Rodrigo De Almeida Siqueira
Oct 14 '16 at 15:13
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