Class: NTable::IndexedAxis

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

Overview

An axis in which the rows are numerically identified by a range of consecutive integers.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(size_, start_ = 0) ⇒ IndexedAxis

Create an IndexedAxis with the given number of rows. The optional start parameter indicates the number of the first row (default 0).



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# File 'lib/ntable/axis.rb', line 185

def initialize(size_, start_=0)
  @size = size_
  @start = start_
end

Instance Attribute Details

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/ntable/axis.rb', line 206

def size
  @size
end

#start ⇒ Object (readonly)

Returns the value of attribute start.



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# File 'lib/ntable/axis.rb', line 207

def start
  @start
end

Instance Method Details

#eql?(obj_) ⇒ Boolean Also known as: ==

Returns:

  • (Boolean) 


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# File 'lib/ntable/axis.rb', line 191

def eql?(obj_)
  obj_.is_a?(IndexedAxis) && obj_.size.eql?(@size) && obj_.start.eql?(@start)
end

#from_json_object(json_obj_) ⇒ Object 



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# File 'lib/ntable/axis.rb', line 224

def from_json_object(json_obj_)
  initialize(json_obj_['size'], json_obj_['start'].to_i)
end

#hash ⇒ Object 



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# File 'lib/ntable/axis.rb', line 196

def hash
  @size.hash ^ @start.hash
end

#index(label_) ⇒ Object 



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# File 'lib/ntable/axis.rb', line 210

def index(label_)
  label_ >= @start && label_ < @size + @start ? label_ - @start : nil
end

#inspect ⇒ Object Also known as: to_s 



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# File 'lib/ntable/axis.rb', line 200

def inspect
  "#<#{self.class}:0x#{object_id.to_s(16)} size=#{@size} start=#{@start}>"
end

#label(index_) ⇒ Object 



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# File 'lib/ntable/axis.rb', line 214

def label(index_)
  index_ >= 0 && index_ < @size ? index_ + @start : nil
end

#to_json_object(json_obj_) ⇒ Object 



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# File 'lib/ntable/axis.rb', line 219

def to_json_object(json_obj_)
  json_obj_['size'] = @size
  json_obj_['start'] = @start unless @start == 0
end