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Which data type for latitude and longitude?
...ongitude and latitude, same as in GPS. More about it: http://epsg.io/4326
Order is Longitude, Latitude - so if you plot it as the map, it is (x, y).
To find closest point you need first to create spatial index:
create index on your_table using gist (geog);
and then request, say, 5 closest to a ...
Iterating over all the keys of a map
...
As a possible gotcha, note that the order of the iteration is undefined. groups.google.com/d/msg/golang-nuts/YfDxpkI34hY/4pktJI2ytusJ
– mna
Sep 22 '12 at 2:18
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What is a “context bound” in Scala?
...les about manifests as "T has a Manifest". The example you linked to about Ordered vs Ordering illustrates the difference. A method
def example[T <% Ordered[T]](param: T)
says that the parameter can be seen as an Ordered. Compare with
def example[T : Ordering](param: T)
which says that the ...
What would cause an algorithm to have O(log n) complexity?
...s assume you have, say, a list of N elements that are sorted in increasing order. You want to find out if some given number exists in that list. One way to do that which is not a binary search is to just scan each element of the list and see if it's your target number. You might get lucky and fin...
How to change the docker image installation directory?
...ou would set the value of the data-root parameter to your custom path, in /etc/docker/daemon.json
(according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file).
With older versions, you can change Docker's storage base directory (where container and images g...
Purpose of Django setting ‘SECRET_KEY’
...ject_pk, timestamp, settings.SECRET_KEY)
contrib/formtools/utils.py:15: order, pickles the result with the SECRET_KEY setting, then takes an md5
contrib/formtools/utils.py:32: data.append(settings.SECRET_KEY)
contrib/messages/storage/cookie.py:112: SECRET_KEY, modified to make it unique...
How to stop and restart memcached server?
...
Using root, try something like this:
/etc/init.d/memcached restart
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How to run multiple .BAT files within a .BAT file
...iles, you could also use for to do this (it does not guarantee the correct order of batch file calls; it follows the order of the file system):
FOR %x IN (*.bat) DO call "%x"
You can also react on errorlevels after a call. Use:
exit /B 1 # Or any other integer value in 0..255
to give back an...
Is it possible to run one logrotate check manually?
...e(s) even if they do not meet the specified criteria such as minsize, age, etc.
– xofer
Jun 5 '13 at 21:28
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Do DOM tree elements with ids become global variables?
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