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What's the best way of implementing a thread-safe Dictionary?

... the enumerating of the members. The problem with this is that you don't know if the action passed to that function calls some member of your dictionary (that would result in a deadlock). Exposing the synchronization object allows the consumer to make those decisions and doesn't hide the deadlock ...
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Convert JS Object to form data

... Of course it will, you don't know what the server is expecting... for...in in JS is problamtic, the solution doesn't have to be Object.keys(), it could be hasOwnProperty(), but it needs to be at least a warning. – Lior ...
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tomcat - CATALINA_BASE and CATALINA_HOME variables

... I can't say I know the best practice, but here's my perspective. Are you using these variables for anything? Personally, I haven't needed to change neither, on Linux nor Windows, in environments varying from development to production. Unl...
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Should I delete the cgi-bin folder in a subdomain I just created?

... You can safely delete "cgi-bin" folder, it's hardly ever used nowadays Also beware that when your server got some malware scripts scans different folders and then hides on folders like cgi-bin because they rarely are checked now. I even wrote a script before that "monitors" different ...
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What is the optimal length for an email address in a database?

... I know this is an old thread and there's no problem using 320, but the actual maximum is 254 because of an overriding restriction from RFC2821 that imposes additional constraints over and above those quoted for the local and dom...
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Running unittest with typical test directory structure

... Python 2.7+ (which is backported as unittest2 for Python 2.6 and earlier) now has test discovery built-in, so nose is no longer necessary if you want automated test discovery: your user instructions can be as simple as python -m unittest discover. ...
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Primary key or Unique index?

...e a composed primary key (person_id, car_id)? – unbeknown Jan 28 '09 at 12:20 3 primary key (pers...
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Expert R users, what's in your .Rprofile? [closed]

... I'm not sure, but I think that now X11.options has been replace by windows.options. Is that true? – Manuel Ramón Nov 4 '11 at 7:17 ...
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Opacity of div's background without affecting contained element in IE 8?

...lists a few other browsers it doesn't work in, but they're all very old by now; all browsers in current use except IE6/7/8 will work with rgba colours. The good news is that you can force IE to work with this as well, using a hack called CSS3Pie. CSS3Pie adds a number of modern CSS3 features to old...
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Parse JSON in TSQL

... Update: As of SQL Server 2016 parsing JSON in TSQL is now possible. Natively, there is no support. You'll have to use CLR. It is as simple as that, unless you have a huge masochistic streak and want to write a JSON parser in SQL Normally, folk ask for JSON output from the DB ...