Class: Gems::List

Inherits:
Hash
  • Object
show all
Defined in:
lib/gems/list.rb

Instance Method Summary collapse

Constructor Details

#initialize(hsh = {}) ⇒ List

Returns a new instance of List.



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# File 'lib/gems/list.rb', line 3

def initialize(hsh={})
  hsh.each do |key, value|
    self[key] = value
  end
end

Instance Method Details

#+(other) ⇒ Object

Returns a new Gemlist which is the union of both GemLists.



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# File 'lib/gems/list.rb', line 24

def +(other)
  union = self.dup
  other.each do |gem, versions|
    if union.has_key? gem
      union[gem] = (union[gem] + versions).uniq.sort
    else
      union[gem] = versions
    end
  end
  union
end

#-(other) ⇒ Object 



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# File 'lib/gems/list.rb', line 9

def -(other)
  diff = Gems::List.new
  self.each do |gem, versions|
    if other.has_key?(gem)
      other_versions = other[gem]
      versions_unique_to_current = versions - other_versions
      diff[gem] = versions_unique_to_current if versions_unique_to_current.size > 0
    else
      diff[gem] = versions
    end
  end
  diff
end

#each_gem_with_version(&block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/gems/list.rb', line 36

def each_gem_with_version(&block)
  raise ArgumentError, 'No block provided' unless block
  self.each do |gemname, versions|
    versions.each do |version|
      block.call(gemname, version)
    end
  end
end

#longest_key_length ⇒ Object 



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# File 'lib/gems/list.rb', line 45

def longest_key_length
  map{|key, value| key.to_s.size}.max || 0
end