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What is Scala's yield?
.....})))
This
for(x <- c; if cond) yield {...}
is translated on Scala 2.7 into
c.filter(x => cond).map(x => {...})
or, on Scala 2.8, into
c.withFilter(x => cond).map(x => {...})
with a fallback into the former if method withFilter is not available but filter is. Please see the...
How to copy files from 'assets' folder to sdcard?
...ssetManager.list("");
} catch (IOException e) {
Log.e("tag", "Failed to get asset file list.", e);
}
if (files != null) for (String filename : files) {
InputStream in = null;
OutputStream out = null;
try {
in = assetManager.open(filename);
...
YouTube API to fetch all videos on a channel
...p;maxResults=20
After that you will receive a JSON with video ids and details, and you can construct your video URL like this:
http://www.youtube.com/watch?v={video_id_here}
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Decreasing for loops in Python impossible?
... significant cost difference between step=-1 and reversed() in both Python 2.7 and 3.3. Also please note that this idiom is used in heapq.
– kojiro
Aug 26 '13 at 1:34
...
Python Process Pool non-daemonic?
...
I just tested my code again with Python 2.7/3.2 (after fixing the "print" lines) on Linux and Python 2.6/2.7/3.2 OS X. Linux and Python 2.7/3.2 on OS X works fine but the code does indeed hang with Python 2.6 on OS X (Lion). This seems to be a bug in the multiproce...
import module from string variable
...b.text', fromlist=[''])
then i will refer to matplotlib.text.
In Python 2.7 and Python 3.1 or later, you can use importlib:
import importlib
i = importlib.import_module("matplotlib.text")
Some notes
If you're trying to import something from a sub-folder e.g. ./feature/email.py, the code wil...
git command to show all (lightweight) tags creation dates
... fits my needs:
git log --tags --simplify-by-decoration --pretty="format:%ai %d"
I've put that command in an alias in my ~/.alias, so now everytime I run gitshowtagbydate I get what I needed.
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Why does Math.Round(2.5) return 2 instead of 3?
... b c d e
a=-2.7 b=-0.5 c=0.3 d=1.5 e=2.8
====== ====== ===== ===== =====
Floor -3 -1 0 1 2
Ceiling -2 0 1 2 3
Truncate ...
Finding a substring within a list in Python [duplicate]
...import mylist, sub', number=100000)
# for me 7.949463844299316 with Python 2.7, 8.568840944994008 with Python 3.4
timeit.timeit('next((s for s in mylist if sub in s), None)', setup='from __main__ import mylist, sub', number=100000)
# for me 0.12696599960327148 with Python 2.7, 0.09955992100003641 w...
Django DB Settings 'Improperly Configured' Error
...django 1.11.5 and python 3.6 (from the comment this also works with Python 2.7):
import django
import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")
django.setup()
The .py in which you put this code should be in mysite (the parent one)
...