Class: Turnip::Table

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/turnip/table.rb

Defined Under Namespace

Classes: ColumnNotExist, WidthMismatch

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(raw) ⇒ Table

Returns a new instance of Table.



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# File 'lib/turnip/table.rb', line 20

def initialize(raw)
  @raw = raw
end

Instance Attribute Details

#raw ⇒ Object (readonly) Also known as: to_a

Returns the value of attribute raw.



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# File 'lib/turnip/table.rb', line 15

def raw
  @raw
end

Instance Method Details

#each ⇒ Object 



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# File 'lib/turnip/table.rb', line 45

def each
  raw.each { |row| yield(row) }
end

#hashes ⇒ Object 



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# File 'lib/turnip/table.rb', line 32

def hashes
  rows.map { |row| Hash[headers.zip(row)] }
end

#headers ⇒ Object 



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# File 'lib/turnip/table.rb', line 24

def headers
  raw.first
end

#map_column!(name, strict = true) ⇒ Object 



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# File 'lib/turnip/table.rb', line 49

def map_column!(name, strict = true)
  index = headers.index(name.to_s)
  if index.nil?
    raise ColumnNotExist.new(name) if strict
  else
    rows.each { |row| row[index] = yield(row[index]) }
  end
end

#rows ⇒ Object 



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# File 'lib/turnip/table.rb', line 28

def rows
  raw.drop(1)
end

#rows_hash ⇒ Object

Raises:



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# File 'lib/turnip/table.rb', line 36

def rows_hash
  raise WidthMismatch.new(2, width) unless width == 2
  transpose.hashes.first
end

#transpose ⇒ Object 



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# File 'lib/turnip/table.rb', line 41

def transpose
  self.class.new(raw.transpose)
end