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Expert R users, what's in your .Rprofile? [closed]
... Yes, the local({ ... }) as shown in help(Startup) is what I usually do these days in Rprofile.site. Haven't needed the X11 hack in a while :)
– Dirk Eddelbuettel
Aug 27 '15 at 11:02
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How to find patterns across multiple lines using grep?
... used as
pcregrep -M 'abc.*(\n|.)*efg' test.txt
where -M, --multiline allow patterns to match more than one line
There is a newer pcre2grep also. Both are provided by the PCRE project.
pcre2grep is available for Mac OS X via Mac Ports as part of port pcre2:
% sudo port install pcre2
and v...
Git Server Like GitHub? [closed]
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You can just set up an ssh server and run a central repository there. All developers then simply agree (as a matter of policy) to push to the server when they are done making commits. This is the usage pattern at my workplace. Very CVS and SVN-like.
Find somewhere to put the repository (/var/...
Opacity of div's background without affecting contained element in IE 8?
...nked above also 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...
java.net.ConnectException: Connection refused
...ing this error. after reading a lot from the buddy WEB, I then closed out all the simulators and eclipse, killed the ADP in the task manager and then restarted the Eclipse and everything is started working properly. I think when you have multiple simulators running and then you try to connect devi...
How to check if a column exists in a SQL Server table?
...Smith didn't knew that, I was using your answer and came across this. Generally I use square brackets during adding columns, so I used them inside COL_LENGTH function too. My code was like this: Alter table Table_Name Add [ColumnName] NVarchar(max) NULL; Select COL_LENGTH('[TABLE_NAME]', '[COLUMN_...
Improve INSERT-per-second performance of SQLite
...more memory will be used for your database.
If you have indices, consider calling CREATE INDEX after doing all your inserts. This is significantly faster than creating the index and then doing your inserts.
You have to be quite careful if you have concurrent access to SQLite, as the whole database i...
How to Programmatically Add Views to Views
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Calling addView is the correct answer, but you need to do a little more than that to get it to work.
If you create a View via a constructor (e.g., Button myButton = new Button();), you'll need to call setLayoutParams on the n...
Joins are for lazy people?
...r developer who claimed to me that JOINs (SQL) are useless. This is technically true but he added that using joins is less efficient than making several requests and link tables in the code (C# or Java).
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Can you use CSS to mirror/flip text?
...ds compliant answer, unfortunately we don't live in a world where this actually works for all use cases yet.
– Chris Sobolewski
Oct 20 '13 at 2:10
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