lym

You've been working locally for awhile. You're ready to push some changes, but someone else pushed something! You have to pull in their changes before you can push yours.

git pull origin master forces you to create a merge commit, which is annoying.

Instead, do git pull --rebase origin master. This will effectively:

1. Stash your changes
2. Pull in the changes from origin
3. Apply your changes on top

No merge commit!

lym

"""
Two things are wrong with Django's default `SECRET_KEY` system:

1. It is not random but pseudo-random
2. It saves and displays the SECRET_KEY in `settings.py`

This snippet
1. uses `SystemRandom()` instead to generate a random key
2. saves a local `secret.txt`

lym

class RandomStringGenerator
  def without_numbers(length)
    random_string(length, alphabet)
  end

  def with_numbers(length)
    random_string(length, alphabet + numbers)
  end

  private

lym

mkdir /tmp/.X11-unix && sudo chmod 1777 /tmp/.X11-unix && sudo chown root /tmp/.X11-unix/

lym

I was trying to reinstall High Sierra on an older MacBook Air using internet recovery and I kept on getting an error message when trying to reinstall High Sierra.

The recovery server could not be contacted

It appears that this has to do with the time on the machine not being synchronized, so when the MacBook tries to reach out to the recovery server the certificates do not validate and we get this useless error message.

To fix this.

1. Open up a Terminal from the utilities menu
2. Enter the following command

lym

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

lym

#!/usr/bin/env ruby

require 'english'
require 'rubocop'

ADDED_OR_MODIFIED = /A|AM|^M/.freeze

changed_files = `git status --porcelain`.split(/\n/).
    select { |file_name_with_status|
      file_name_with_status =~ ADDED_OR_MODIFIED

lym

def _check_meter_image(self, meter_image):  # meter_image is a base64-encoded string
        err_msg = 'Please take a photograph of the meter'
        if meter_image:
            pre_img     = base64.encodestring(bytearray(meter_image, 'utf8'))
            pre_img2    = base64.decodestring(pre_img)
            img_file    = io.BytesIO(pre_img2)
            img         = Image.open(img_file)
            print(img.filename)
            if img.format == 'JPEG':
                return True

lym

# Just install libpq-dev
$ sudo apt-get install libpq-dev

lym

# With manage.py
$ env/bin/python manage.py shell

# Without manage.py
$ export DJANGO_SETTINGS_MODULE=[module containing your settings]
$ env/bin/python
>>> import django
>>> django.setup()