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How to detect if a specific file exists in Vimscript?
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I get E116: Invalid arguments for function. How do you specify the file relative to the home directory to check for a plugin? (See also here)
– Scz
Jul 23 '15 at 9:23
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PostgreSQL - Rename database
...ther clients from the database to be renamed
SELECT pg_terminate_backend( pid )
FROM pg_stat_activity
WHERE pid <> pg_backend_pid( )
AND datname = 'name of database';
-- rename the database (it should now have zero clients)
ALTER DATABASE "name of database" RENAME TO "new name of database...
Double not (!!) operator in PHP
... @Theo, It's actually one operator? Does the interpreter consider !! equal to (bool) in this case? Or will different machine code be run depending on which one is used?
– Pacerier
Mar 30 '15 at 12:00
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How can I remove a flag in C?
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+1 for catching the nonobvious corner case. One way to avoid it is to instead use flags -= flags & MY_FLAG; (or ^= if you prefer).
– R.. GitHub STOP HELPING ICE
Oct 16 '10 at 7:52
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Making a Location object in Android with latitude and longitude values
...th you current location.
Location targetLocation = new Location("");//provider name is unnecessary
targetLocation.setLatitude(0.0d);//your coords of course
targetLocation.setLongitude(0.0d);
float distanceInMeters = targetLocation.distanceTo(myLocation);
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Creating a new column based on if-elif-else condition
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To formalize some of the approaches laid out above:
Create a function that operates on the rows of your dataframe like so:
def f(row):
if row['A'] == row['B']:
val = 0
elif row['A'] > row['B']:
val = 1
else:
val = -1
r...
What's a standard way to do a no-op in python?
...compound_stmts.html) – like e.g. as a sub-expression to an existing code idiom like a comprehension, or a lambda, or (god forbid) a string to be passed into eval(…) (which q.v. docs.python.org/3/library/functions.html#eval if you must).
– fish2000
Apr 23 '1...
Nginx not picking up site in sites-enabled?
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I had the same problem. It was because I had accidentally used a relative path with the symbolic link.
Are you sure you used full paths, e.g.:
ln -s /etc/nginx/sites-available/example.com.conf /etc/nginx/sites-enabled/example.com.conf
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Should I use encoding declaration in Python 3?
...hen you deviate from the default, or if you rely on other tools (like your IDE or text editor) to make use of that information.
In other words, as far as Python is concerned, only when you want to use an encoding that differs do you have to use that declaration.
Other tools, such as your editor, c...
How can I keep my fork in sync without adding a separate remote?
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To avoid the confusing situation mention above, it'd better click the Edit button and manually switch the base fork to me/foobar and head fork to someone/foobar. In this way it's much clear
– macemers
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