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Why does the lock object have to be static?

... a private static readonly object for locking in multi threading. I understand that private reduces the entry points to the locking object by tightening the encapsulation and therefore access to the most essential. ...
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Error in : object of type 'closure' is not subsettable

... able to work out the code for my scraping . It seemed to be working fine and then all of a sudden when I ran it again, I got the following error message: ...
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Moving default AVD configuration folder (.android)

After installation of Android SDK, there was created .android folder on the E:\ drive. As far as I know this is the default folder of Android Virtual Devices for configuration files. ...
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How do I “source” something in my .vimrc file?

I've been working on expanding my vim-foo lately and I've run across a couple of plugins ( autotag.vim for example) that require them to be "sourced" in my .vimrc file. What exactly does this mean and how do I do it? ...
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How do I set a textbox's text to bold at run time?

I'm using Windows forms and I have a textbox which I would occassionally like to make the text bold if it is a certain value. ...
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How to get terminal's Character Encoding

...or I/O. The terminal emulator itself has no knowledge of them whatsoever, and its currently effective character encoding is a setting somewhere within the emulator program (a data member inside a libvte class in the case of GNOME Terminal). – JdeBP Oct 31 '17 ...
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Is it a good idea to index datetime field in mysql?

...n/5.0/en/mysql-indexes.html This makes your datetime column an excellent candidate for an index if you are going to be using it in conditions frequently in queries. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 30 DAY) and you have no other index in the condition, MySQL will...
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Difference between filter and filter_by in SQLAlchemy

Could anyone explain the difference between filter and filter_by functions in SQLAlchemy? Which one should I be using? ...
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jQuery lose focus event

I'm trying to show up a container if a input field gets the focus and - that's the actual problem - hide the container if focus is lost. Is there an opposite event for jQuery's focus? ...
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PHP - Modify current object in foreach loop

I was wondering if it is possible to edit the current object that's being handled within a foreach loop 2 Answers ...