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Devise form within a different controller
I am using a devise gem for sign_in/sign_out procedures.
5 Answers
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Upgrade python in a virtualenv
... folders for both python versions (2.7.x and 2.7.y packages are inside your_env/lib/python2.7/).
If you change your virtualenv python version, you will need to install all your packages again for that version (or just link the packages you need into the new version packages folder, i.e: your_env/li...
Remove specific commit
...specify the remote branch when you force push: git push --force origin your_branch.
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What is the largest Safe UDP Packet Size on the Internet
... (which is 64kb minus IP and UDP header sizes). en.wikipedia.org/wiki/User_Datagram_Protocol
– Pablo Ariel
Nov 1 '18 at 21:08
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Java - get pixel array from image
... BGR ordering. You should check the incoming BufferedImage's type e.g. TYPE_INT_RGB or TYPE_3BYTE_BGR and handle appropriately. This is one of the things that getRGB() does for you, that makes it slower :-(
– millhouse
Mar 30 '15 at 4:58
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What is the difference between a thread and a fiber?
...ing it better than I probably did are:
http://en.wikipedia.org/wiki/Fiber_(computer_science)
http://en.wikipedia.org/wiki/Computer_multitasking#Cooperative_multitasking.2Ftime-sharing
http://en.wikipedia.org/wiki/Pre-emptive_multitasking
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Looping through the content of a file in Bash
...nd the one-liner variant:
cat peptides.txt | while read line; do something_with_$line_here; done
These options will skip the last line of the file if there is no trailing line feed.
You can avoid this by the following:
cat peptides.txt | while read line || [[ -n $line ]];
do
# do something w...
Matplotlib scatterplot; colour as a function of a third variable
...o scatter. To use the reversed version of any of these, just specify the "_r" version of any of them. E.g. gray_r instead of gray. There are several different grayscale colormaps pre-made (e.g. gray, gist_yarg, binary, etc).
import matplotlib.pyplot as plt
import numpy as np
# Generate data......
How to find a Java Memory Leak
...s somewhere below. You have to draw the connection yourself.
jdk/jdk1.6.0_38/bin/jmap -histo:live 60030 > /tmp/60030istolive1330.txt
Instead of taking two heap dumps, take two class histograms, like as described above; Then compare the class histograms and see the classes that are increasing....
Solving a “communications link failure” with JDBC and MySQL [duplicate]
...it comment by adding "#" sign at the beginning of that line.
change "wait_timeout" and "interactive_timeout"
Add these lines to the MySQL config file:
wait_timeout = number
interactive_timeout = number
connect_timeout = number
Make sure Java isn't translating 'localhost' to [:::1] instead o...