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How can I add an empty directory to a Git repository?
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You can read "it's impossible, you can't, etc." all over the Internet for this frequent question. The .gitignore trick is a frequent answer, and satisfies many needs. However it IS possible to make git track an truly empty directory, see my answer
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Wolfram's Rule 34 in XKCD [closed]
...ts neighbors match rule 1 above, it turns black/positive/1/true/whatever`, etc. etc. until you see that, for rule 110, if a cell and its neighbors match rules 1,2,3,5,6, then the cell turns black. Otherwise, it turns white. A while back, I wrote some JS code to allow me to play around with these uni...
ViewModel Best Practices
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Separating classes by category (Controllers, ViewModels, Filters etc.) is nonsense.
If you want to write code for the Home section of your website (/) then create a folder named Home, and put there the HomeController, IndexViewModel, AboutViewModel, etc. and all related classes used by Ho...
.keyCode vs. .which
...nly. your event.wich || ... test for falsy (undefined, null, false, 0, '', etc)
– aMarCruz
May 22 '15 at 11:54
@aMarCr...
Simpler way to put PDB breakpoints in Python code?
...ork alright. Most other 'simple' programmers editors (emacs, sublimetext, etc) should have similar easy ways to do this.
Edit:
I actually have:
au FileType python map <silent> <leader>b oimport pdb; pdb.set_trace()<esc>
au FileType python map <silent> <leader>B Oimpo...
Automatic Retina images for web sites
...bsite is designed, what kind of technology your typical visitors are using etc. Note that retina displays are not limited to the Macbook Pro Retina and the coming iMacs, but also include mobile devices, which may have their own needs.
The problem is also closely related to images in responsive desi...
Putty: Getting Server refused our key Error
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@user1046647 LogLevel is defined in /etc/ssh/sshd_config. The default log is /var/log/auth.log unless defined otherwise in sshd_config.
– Axel Kemper
Feb 8 '15 at 15:10
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HTTP headers in Websockets client API
... used, client IP encoded in ticket matches, timestamp in ticket is recent, etc). Here is a summary of WebSocket security information: https://devcenter.heroku.com/articles/websocket-security
Basic authentication was formerly an option but this has been deprecated and modern browsers don't send the ...
What is the difference between SQL, PL-SQL and T-SQL?
... management systems: SQL Server, Oracle, MySQL, PostgreSQL, DB2, Informix, etc.
PL/SQL is a proprietary procedural language used by Oracle
PL/pgSQL is a procedural language used by PostgreSQL
TSQL is a proprietary procedural language used by Microsoft in SQL Server.
Procedural languages are design...
postgresql port confusion 5433 or 5432?
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/etc/services is only advisory, it's a listing of well-known ports. It doesn't mean that anything is actually running on that port or that the named service will run on that port.
In PostgreSQL's case it's typical to use port...