Class: Array

Inherits:
Object show all
Defined in:
lib/muflax/array.rb,
lib/muflax/align.rb,
lib/muflax/blank.rb,
lib/muflax/deep_dup.rb

Overview

Copyright muflax <[email protected]>, 2013 License: GNU GPL 3 <www.gnu.org/copyleft/gpl.html>

Instance Method Summary collapse

Instance Method Details

#align(str = "\t", alignment: :left, force: false) ⇒ Object 



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# File 'lib/muflax/align.rb', line 40

def align str="\t", alignment: :left, force: false
  just_function = case alignment
                  when :left    ; Proc.new{|e,l,_c| e.ljust(l)   }
                  when :right   ; Proc.new{|e,l,_c| e.rjust(l)   }
                  when :center  ; Proc.new{|e,l,_c| e.center(l)  }
                  when Proc     ; alignment
                  else
                    raise "invalid alignment: #{alignment}"
                  end

  # split all lines
  lines   = []
  columns = 0
  rx      = /[ ]#{str}/ if force

  self.each do |line|
    line    .gsub! rx, str if force
    line    = line.split(str, -1)
    lines   << line
    columns = [columns, line.size].max
  end

  # justify all columns
  lengths = columns.times.map do |column|
    lines.reduce(0){|sum, line| [line[column].str_length, sum].max}
  end

  lines.map! do |line|
    # align columns
    line.map!.with_index do |elem, column|
      # how much the element is internally longer than it appears
      elem_diff = elem.to_s.length - elem.str_length

      just_function.call(elem, lengths[column] + elem_diff, column)
    end

    # join line back together
    line.join(str)
  end

  lines
end

#align!(str = " ", alignment: :left) ⇒ Object 



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# File 'lib/muflax/align.rb', line 83

def align! str=" ", alignment: :left
  self.replace(self.align(str, alignment: alignment))
end

#deep_dup ⇒ Object 



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# File 'lib/muflax/deep_dup.rb', line 13

def deep_dup
  map(&:deep_dup)
end

#fifth ⇒ Object 



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# File 'lib/muflax/array.rb', line 22

def fifth   ; self[4]  ; end

#fourth ⇒ Object 



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# File 'lib/muflax/array.rb', line 21

def fourth  ; self[3]  ; end

#rfind(*arg, &block) ⇒ Object 



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# File 'lib/muflax/array.rb', line 24

def rfind *arg, &block
  i = self.rindex(*arg, &block)
  i.nil? ? nil : self[i]
end

#second ⇒ Object

silly accessors



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# File 'lib/muflax/array.rb', line 19

def second  ; self[1]  ; end

#third ⇒ Object 



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# File 'lib/muflax/array.rb', line 20

def third   ; self[2]  ; end

#triangle ⇒ Object 



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# File 'lib/muflax/array.rb', line 7

def triangle
  return to_enum(:triangle) unless block_given?

  self.each.with_index do |a, ai|
    self.each.with_index do |b, bi|
      next if bi < ai
      yield [a, b]
    end
  end
end