conda install py-xgboost-gpu

source: https://docs.anaconda.com/anaconda/user-guide/tasks/gpu-packages/

Create a new environment with as of now python 3.7 since opencv not available in conda's python 3.8 packages

conda create --name opencv-cuda python=3.7
conda activate opencv-cuda
conda install pytorch torchvision cudatoolkit=10.2 opencv -c pytorch

python

import cv2

If the above is all fine, but in jupyter the "No module named 'cv2'" error still an issue. Make sure to install jupyter in that environment too.

If jupyter is intalled in the base environment but not in opencv-cud it will be started...

https://github.com/mperham/sidekiq/wiki/Batches

bs = Sidekiq::BatchSet.new
bs.each do |batch|
  puts batch.bid
  batch.delete
end

I asked the same question from myself and it took some time to find a proper solution.

KDE config settings stored in ~/.share/config and klippers' in ~/.share/config/klipperrc

In that file there is configuration group called Notification Messages in which all answers which were answered with "Do not ask again" checkbox ticked are stored.

[Notification Messages]
really_clear_history=false 

In this case whenever user clicks on Clear Clipboard History it will always taken as if the user got the pop and answered no. If it...

M-x visit-tags-table

You need to point to the directory in which ETAGS file generated and it will be loaded.

git rebase -i -x 'git ci --amend --reset-author -Chead' head~5

ctags -e -R --exclude=.git

This is going to generate a TAGS file in project root

class Example
  def foo
    def foo
      @bar
    end
    bar = (1..10).inject(1, :*)
    puts "bar is #{bar}"
    @wibble = "wibble is #{bar / 30}"
    @bar = bar / 20
  end
end

example = Example.new
example.foo
bar is 3628800
=> 181440
example.foo 
=> 181440

The hard working method, the outer def foo is called only once, on the first invocation, afterward, the nested def foo overrides it and simply returning the @bar variable from the object. The nested def foo still accessing the same object.

Note ...

https://www.emacswiki.org/emacs/EmacsNewbieKeyReference#toc9

https://tuhdo.github.io/c-ide.html

Join previous line: M-^

Join next line: C-1 M-^

If KDE is crash for some reason and not able to restore window's titlebar type this into konsole:

This will restore window titles and redirect further error messages to /dev/null

kwin_x11 --replace & 2> /dev/null

Vim fugitive Gread command's equivavelent in emacs is: vc-revert

Given you are on the development branch and have another branch my_topic
  And want to compare the same file on the two different branches
 When open a file in vim say, Gemfile
 Then type :Gdiff my_topic
  And Vim open Gemfile from my_topic branch in a new split

To Mute:

amixer -D pulse sset Master mute

To Unmute:

amixer -D pulse sset Master unmute

To turn volume up 5%:

amixer -D pulse sset Master 5%+

To turn volume down 5%:

amixer -D pulse sset Master 5%-

zypper ar http://download.opensuse.org/repositories/home:/Ledest:/erlang/openSUSE_13.2/home:Ledest:erlang.repo
# for inotify (live code reload)
zypper ar http://download.opensuse.org/repositories/filesystems/openSUSE_13.2/

zypper ref
zypper in inotify-tools
zypper in erlang-full
zypper in elixir
zypper in erts-devel

config.email_regexp = /\A(([\p{L}0-9]+_+)|([\p{L}0-9]+\-+)|([\p{L}0-9]+\.+)|([\p{L}0-9]+\++))*[\p{L}0-9]+@(([\p{L}0-9]+\-+)|([\p{L}0-9]+\.))*[\p{L}0-9]{1,63}\.[\p{L}]{2,6}\z/i

In your engine's engine.rb file add these line:

module MyEngine
  class MyEngine < Rails::Engine
    config.before_initialize do                                                      
      config.i18n.load_path += Dir["#{config.root}/config/locales/**/*.yml"]
    end
  end
end

I was struggle to set up a nicely formatted git log for a while. What I wanted to achive is to be able to quickly overlook the history including the
branch structure, authors, time of commits, remote and local branches. Here is what I currently use

I used to use this config in the past, there is little problem with this - honestly not too big -, is that all the branches displayed with yellow:

alias]
  prlog = log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%ad) %C(bold blue)<%an>%Creset' --abbrev-commit ...

If using zeus in that terminal issue the command below:

export BROWSER='/usr/bin/konqueror'

than in another terminal run

zeus cucumber features/holly____.feature

BROWSER will take precedence over xdg-open and - by using different browser - fix firefox's strange behaviour with X11 ssh forward https://bugzilla.mozilla.org/show_bug.cgi?id=378032

config/unicorn/staging.conf

worker_processes 4

after_fork do |server, worker|
  $worker_nr = worker.nr                                                                                                     
end

config/application.rb

module MyApp
  class Application < Rails::Application
    #... lots of config options
    config.logger = ActiveSupport::TaggedLogging.new(Logger.new(Rails.root.join("log", "#{Rails.env}_#{$worker_nr}.log").to_s))
  end
end

ENV HOME /home/dev
USER dev 
RUN curl -L https://get.rvm.io | bash -s stable

You see this 2013/11/28 14:00:24 Get https://index.docker.io/v1/images/ubuntu/ancestry: x509: certificate signed by unknown authorit

You say wtf????????

Then In this file /etc/ssl/ca-bundle.pem there is a hint: /usr/lib/ca-certificates/update.d/certbundle.run run it. Reboot. Voila no cert errors.

Try Settings -> Edit Current Profile... -> Environment: Edit... -> enter "TERM=xterm-256color" (without "").

To check how many colors terminal has use this script

I had a problem under OpenSuSE 13.1 with tmux 1.8-2.1.2 the home and end buttons did not work. It took me so long to find a solution but finally here it is, original link attached.

There is a nice tool called tput which can display the key sequence values that the system receives when a user hit a button, and another one bind which can map key sequences to another. This way it easy to spot that under tmux the system receives different sequence.

Test it like this:

$ cat -v # pressing home, then end
^[[1~^[[4~
$ tput...

It seems chain uinon with union is possible with newer versions of Arel. But i currently stucked with 3.0.2 so this is what i come up with:

beer = Beer.arel_table
union1 = Beer.where(name: "Oberon").union(Beer.where(name: "Two Hearted")) 
table1 = Beer.select("two_beers.*").from(beer.create_table_alias(union1, :two_beers).to_sql)

union2 = table1.union(Beer.where(name: "Distilled"))
table2 = Beer.from(beer.create_table_alias(union2, :beers).to_sql)

The generated SQL is far from being nice but for me works.