squib-filter_indexes.md

cards.csv

name,type,image,description,quote
Landmaster,Vehicle,landmaster.png
"The Interceptor","Vehicle",interceptor.png,Blah blah blah,"The last of the V8 Interceptors... a piece of history!"
180,"Manuver",,You do a 180,Yeeeee-hawwww!

deckrb

require 'squib'

card = Squib.csv file: 'cards.csv'

class Array
  def filter_indexes
    each_with_index.inject([]) do |indexes, (value, index)|
      indexes << index unless yield value
      indexes
    end
  end
end
    
Squib::Deck.new(cards: card['name'].size, layout: 'layout.yml') do
  png file: card['image'], layout: 'image', range: card['image'].filter_indexes { |image| image.nil? }
  rect layout: 'image-border', range: card['image'].filter_indexes { |image| image.nil? }
  
  save_png prefix: card['type']
end

A little more iterating on this:

classs Array
  def select_indexes
    each_with_index.inject([]) do |indexes, (value, index)|
      indexes << index if yield value
      indexes
    end
  end

  def reject_indexes
    each_with_index.inject([]) do |indexes, (value, index)|
      indexes << index unless yield value
      indexes
    end
  end
end

# ...

  png file: card['image'], layout: 'image', range: card['image'].reject_indexes(&:nil?)
  rect layout: 'image-border', range: card['image'].reject_indexes(&:nil?)