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How can I recall the argument of the previous bash command?
...
You can use $_ or !$ to recall the last argument of the previous command.
Also Alt + . can be used to recall the last argument of any of the previous commands.
s...
Why is iterating through a large Django QuerySet consuming massive amounts of memory?
... # change this to desired chunk size
for page in range(1, paginator.num_pages + 1):
for row in paginator.page(page).object_list:
# here you can do whatever you want with the row
print "done processing page %s" % page
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Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'
...e in OWIN 3.0 middleware. Refer to this link if you are receiving a "access_denied" error message. blogs.msdn.com/b/webdev/archive/2014/07/02/…
– Ali Hmer
Aug 24 '14 at 15:34
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Pandas every nth row
...simpler solution to the accepted answer that involves directly invoking df.__getitem__.
df = pd.DataFrame('x', index=range(5), columns=list('abc'))
df
a b c
0 x x x
1 x x x
2 x x x
3 x x x
4 x x x
For example, to get every 2 rows, you can do
df[::2]
a b c
0 x x x
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How do I create a MongoDB dump of my database?
...for backup you call this command on your terminal
mongodump --db database_name --collection collection_name
To import your backup file to mongodb you can use the following command on your terminal
mongorestore --db database_name path_to_bson_file
...
Angularjs minify best practice
... note on minification have been moved here docs.angularjs.org/tutorial/step_07
– Razvan.432
Jul 26 '16 at 18:24
See al...
Pagination in a REST web application
... Range header also works to declare an order:
Range: products-by-date=2009_03_27-
to get all products newer than that date or
Range: products-by-date=0-2009_11_30
to get all products older than that date. '0' is probably not best solution, but RFC seems to want something for range start. There...
How to get the current time in milliseconds from C in Linux?
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This can be achieved using the POSIX clock_gettime function.
In the current version of POSIX, gettimeofday is marked obsolete. This means it may be removed from a future version of the specification. Application writers are encouraged to use the clock_gettime functi...
Concurrent.futures vs Multiprocessing in Python 3
...o make it work:
from concurrent.futures import ProcessPoolExecutor
def pool_factorizer_map(nums, nprocs):
# Let the executor divide the work among processes by using 'map'.
with ProcessPoolExecutor(max_workers=nprocs) as executor:
return {num:factors for num, factors in
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Retrieve database or any other file from the Internal Storage using run-as
... databases.tar
adb exec-out run-as debuggable.app.package.name tar c shared_prefs/ > shared_prefs.tar
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