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What is the difference between user variables and system variables?
...system variables. The elements are combined when creating the environment for an application. System variables are shared for all users, but user variables are only for your account/profile.
If you deleted the system ones by accident, bring up the Registry Editor, then go to HKLM\ControlSet002\Cont...
Maximum concurrent Socket.IO connections
...mall test (using XHR-polling) to see when the connections started to fail (or fall behind). I found (in my case) that the sockets started acting up at around 1400-1800 concurrent connections.
This is a short gist I made, similar to the test I used: https://gist.github.com/jmyrland/5535279
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What is the best way to detect a mobile device?
Is there a way to detect whether or not a user is using a mobile device in jQuery? Something similar to the CSS @media attribute? I would like to run a different script if the browser is on a handheld device.
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How to get a thread and heap dump of a Java process on Windows that's not running in a console
... dump of any process running, assuming you know the pid.
Use Task Manager or Resource Monitor to get the pid. Then
jmap -dump:format=b,file=cheap.hprof <pid>
to get the heap for that process.
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ItemsControl with horizontal orientation
Do you know any controls inherited from the ItemsControl that have horizontal orientation of items?
5 Answers
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Is there a simple way to remove multiple spaces in a string?
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>>> import re
>>> re.sub(' +', ' ', 'The quick brown fox')
'The quick brown fox'
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How to export and import environment variables in windows?
...eep my environment variables sync on different machines. I just want to export the settings from one computer and import to other ones.
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Determine if Android app is being used for the first time
...eveloping an android app. I need to do something when the app is launched for the first time, i.e. the code only runs on the first time the program is launched.
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How do I escape ampersands in batch files?
How do I escape ampersands in a batch file (or from the
Windows command line) in order to use the start command to
open web pages with ampersands in the URL?
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How do I search for an object by its ObjectId in the mongo console?
I've found this question answered for C# and Perl, but not in the native interface. I thought this would work:
12 Answers
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