kwent

# db/migrate/20200119064500_add_position_column_to_active_storage_attachments.rb

class AddPositionColumnToActiveStorageAttachments < ActiveRecord::Migration[6.0]
  def change
    add_column :active_storage_attachments, :position, :integer, default: 0
  end
end

waffleau

  def self.extract_dominant_colors(image_path, quantity=5, threshold=0.01)
    image = MiniMagick::Image.open(image_path)

    # Get image histogram
    result = image.run_command('convert', image_path, '-format', '%c', '-colors', quantity, '-depth', 8, 'histogram:info:')
    
    # Extract colors and frequencies from result
    frequencies = result.scan(/([0-9]+)\:/).flatten.map { |m| m.to_f }
    hex_values = result.scan(/(\#[0-9ABCDEF]{6,8})/).flatten
    total_frequencies = frequencies.reduce(:+).to_f

soultech67

Preamble

On OS/X Sierra, after recently running a brew update I started receiving the error message Sorry, you can't use byebug without Readline when trying to run some rake tasks in my ruby project folder. I observed this in projects and gems that include byebug or pry in their Gemfile or gem.spec. I've found in my googling that many begin encountering this error message after running a brew update but there are other triggering conditions as well.

>> rake aws:show_config
WARN: Unresolved specs during Gem::Specification.reset:
      mime-types (>= 0)
WARN: Clearing out unresolved specs.
Please report a bug if this causes problems.
 Sorry, you can't use byebug without Readline. To solve this, you need to