Class: SortedArray::DefaultSorter

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

Overview

Sorts by comparing of :field a <=> b.

Descend your Sorter from this class. It must at least define a method 'sort'.

Examples:

class Foo
  def initialize(_bar)
    @bar = _bar
  end
  def bar
    @bar
  end
end
s = DefaultSorter.new(:bar)
a = SortedArray(s, Foo.new(1), Foo.new(3), Foo.new(2))
# => Foo(1), Foo(2), Foo(3)

See Also:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(_method) ⇒ DefaultSorter

Returns a new instance of DefaultSorter.

Parameters:

  • _method (String) —
    • the method to be used while sorting.


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# File 'lib/sorted_array/default_sorter.rb', line 25

def initialize(_method)
  @method = _method
end

Instance Attribute Details

#method ⇒ Object (readonly)

Returns the value of attribute method.



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# File 'lib/sorted_array/default_sorter.rb', line 22

def method
  @method
end

Instance Method Details

#marshal_dump ⇒ Array

Returns - Classname, methodname.

Returns:

  • (Array) —
    • Classname, methodname


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# File 'lib/sorted_array/default_sorter.rb', line 39

def marshal_dump
  [ self.class, @method ]
end

#marshal_load(array) ⇒ Object

Parameters:

  • array (Array) —
    • _classname,[..entries..]


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# File 'lib/sorted_array/default_sorter.rb', line 44

def marshal_load array
  @method = array.last
end

#sort(object) ⇒ Object

This method is abstract.

Overwrite this method in descendants

Sort the given object. to sort your objects for your needs

Parameters:

  • what (Object) —
    • what must provice a method sort! and :method

Returns:

  • (Object) 


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# File 'lib/sorted_array/default_sorter.rb', line 34

def sort(object)
  object.sort! { |a,b| a.send(@method) <=> b.send(@method) }
end