Class: Putcstst::CSVPrinter

Inherits:
Object
  • Object
show all
Defined in:
lib/putcstst.rb

Overview

class Error < StandardError; end

Instance Method Summary collapse

Constructor Details

#initialize(filepath) ⇒ CSVPrinter 



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# File 'lib/putcstst.rb', line 8

def initialize(filepath)
  @file = filepath
end

Instance Method Details

2D(2 column) Array Only



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# File 'lib/putcstst.rb', line 12

def print # 2D(2 column) Array Only
  CSV.foreach(@file) do |data|
    format = data.each_with_object("") do |_, str|
      str << "%10s"
      # str += "%10s" ## これはだめ。ふしぎ！
      # yieldの返り値が結合後にならないからなのかと思ったが
      # returnはちゃんと返されてる 
    end

    puts sprintf(format, *data)
  end
end