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Drop rows with all zeros in pandas data frame
...lumn. With the help of all discussion and answers in this post, I did this by doing df.loc[df.iloc[:, 0] != 0]. Just wanted to share because this problem is related to this question!!
– hemanta
Feb 14 '19 at 4:47
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How to generate random number in Bash?
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By moduloing your random input, you are "pigeon-holing" the results. Since $RANDOM's range is 0-32767 the numbers 0-7 map to 3277 different possible inputs, but 8 and 9 can only be produced 3276 different ways (because 32768...
How can I write text on a HTML5 canvas element?
...
var canvas = document.getElementById("my-canvas");
var context = canvas.getContext("2d");
context.fillStyle = "blue";
context.font = "bold 16px Arial";
context.fillText("Zibri", (canvas.width / 2) - 17, (canvas.height / 2) + 8);
#my-canvas {
backg...
Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS X Server)
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I was able to solve by simply filling in 127.0.0.1 for the PostgreSQL host address rather than leaving it blank. (Django Example)
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'databa...
Override devise registrations controller
...his instance.
Otherwise, I think you can just create your own controller, by generating something like this:
# app/controllers/registrations_controller.rb
class RegistrationsController < Devise::RegistrationsController
def new
super
end
def create
# add custom create logic here
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What's “requestCode” used for on PendingIntent?
...cumentation for PendingIntent and AlarmManager are total sh!t - made worse by the fact that it's not possible to list alarms programmatically.
– Someone Somewhere
Aug 3 '15 at 19:27
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Good Java graph algorithm library? [closed]
... and packages hep.aida.* are LGPL (via the colt library, which is imported by JUNG). This prevents JUNG from being used in projects under the umbrella of ASF and ESF. Maybe one should use the github fork and remove that dependency. Commit f4ca0cd is mirroring the last CVS commit. The current commits...
Remove carriage return in Unix
... file with a CR at the end of the first line only:
$ cat infile
hello
goodbye
$ cat infile | od -c
0000000 h e l l o \r \n g o o d b y e \n
0000017
dos2unix is the way to go if it's installed on your system:
$ cat infile | dos2unix -U | od -c
0000000 h e l l ...
How do I add a placeholder on a CharField in Django?
...eding u like this: {'placeholder': u'搜索'}
– shellbye
Oct 14 '17 at 3:52
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Xcode/Simulator: How to run older iOS version?
...roject and Get Info. Under the Build tab look for iOS Deployment Target. By changing this you should be able to test different iOS version.
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