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Mongod complains that there is no /data/db folder
...e getting is "Unable to create/open lock file: /data/db/mongod.lock errno:13 Permission denied". The directory you created doesn't seem to have the correct permissions and ownership --
it needs to be writable by the user who runs the MongoDB process.
To see the permissions and ownership of the '/d...
Rails 4: assets not loading in production
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answered Feb 10 '14 at 7:32
Rameshwar VyevhareRameshwar Vyevhare
2,49622 gold badges2121 silver badges2828 bronze badges
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How to calculate the bounding box for a given lat/lng location?
... 180.0*radians/math.pi
# Semi-axes of WGS-84 geoidal reference
WGS84_a = 6378137.0 # Major semiaxis [m]
WGS84_b = 6356752.3 # Minor semiaxis [m]
# Earth radius at a given latitude, according to the WGS-84 ellipsoid [m]
def WGS84EarthRadius(lat):
# http://en.wikipedia.org/wiki/Earth_radius
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Characters allowed in a URL
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From RFC 1738 specification:
Thus, only alphanumerics, the special characters "$-_.+!*'(),", and
reserved characters used for their reserved purposes may be used
unencoded within a URL.
EDIT: As @Jukka K. Korpela correctly poi...
ActionBarCompat: java.lang.IllegalStateException: You need to use a Theme.AppCompat
I am getting a RuntimeException on Android 2.3.5 but I am using Theme.AppCompat (res/values/themes.xml). This is the phone: http://www.gsmarena.com/samsung_galaxy_y_s5360-4117.php
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When should I create a destructor?
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237
UPDATE: This question was the subject of my blog in May of 2015. Thanks for the great question!...
Non-recursive depth first search algorithm
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315
DFS:
list nodes_to_visit = {root};
while( nodes_to_visit isn't empty ) {
currentnode = node...
How to see log files in MySQL?
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Here is a simple way to enable them. In mysql we need to see often 3 logs which are mostly needed during any project development.
The Error Log. It contains information about errors that occur while
the server is running (also server start and stop)
The General Query Log. This is a general...
move_uploaded_file gives “failed to open stream: Permission denied” error
...or when trying to configure the upload directory with Apache 2.2 and PHP 5.3 on CentOS.
13 Answers
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How does __proto__ differ from constructor.prototype?
It always returns the object with rating = 3.
8 Answers
8
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