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How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
...:2> }
irb(main):019:1> end
=> #<Benchmark::Tms:0x00007fbdc18f0d28 @label="", @real=0.8680500000045868, @cstime=0.0, @cutime=0.0, @stime=0.009999999999999998, @utime=0.86, @total=0.87>
irb(main):020:0>
irb(main):021:0* Benchmark.measure do
irb(main):022:1* 100_000.times {
irb(ma...
Effects of changing Django's SECRET_KEY
...t know about 1.4, it's a matter of taking a look at the code. I pointed at all the sources for each point, you can take a look at "protect session data and create random session keys". It's normal you're still logged in but you won't be able to read the data contained in the session as SECRET_KEY is...
docker mounting volumes on host
...independent of the container's life cycle. Docker therefore never automatically delete volumes when you remove a container, nor will it "garbage collect" volumes that are no longer referenced by a container." One of these statements must be wrong.
– mc0e
May 6...
CSS filter: make color image with transparency white
...jP.gif" class="filter" />
</p>
First, brightness(0) makes all image black, except transparent parts, which remain transparent.
Then, invert(1) makes the black parts white.
share
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Fastest hash for non-cryptographic uses?
I'm essentially preparing phrases to be put into the database, they may be malformed so I want to store a short hash of them instead (I will be simply comparing if they exist or not, so hash is ideal).
...
What does the git index contain EXACTLY?
...ns an article on what an index includes:
The index is a binary file (generally kept in .git/index) containing a sorted list of path names, each with permissions and the SHA1 of a blob object; git ls-files can show you the contents of the index:
$ git ls-files --stage
100644 63c918c667fa005ff12ad89...
How to Customize a Progress Bar In Android
..."
android:centerY="1.0"
android:endColor="#0d1522"
android:angle="270"
/>
</shape>
</item>
<!-- Define the progress properties like start color, end color etc -->
<item android:id="@android:id/progress">
...
How do you convert a byte array to a hexadecimal string, and vice versa?
...
You're using SubString. Doesn't this loop allocate a horrible amount of string objects?
– Wim Coenen
Mar 6 '09 at 16:36
30
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How to avoid reinstalling packages when building Docker image for Python projects?
...ase
WORKDIR /srv
ADD ./requirements.txt /srv/requirements.txt
RUN pip install -r requirements.txt
ADD . /srv
RUN python setup.py install
ENTRYPOINT ["run_server"]
Docker will use cache during pip install as long as you do not make any changes to the requirements.txt, irrespective of the fact whet...
Named colors in matplotlib
... have been moved under the 'xkcd:' prefix since I posted this answer originally.
I really didn't change much from the matplotlib example, but here is the code for completeness.
import matplotlib.pyplot as plt
from matplotlib import colors as mcolors
colors = dict(mcolors.BASE_COLORS, **mcolors...