Class: Atig::SizedHash

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/atig/sized_hash.rb

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ SizedHash

Returns a new instance of SizedHash.



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# File 'lib/atig/sized_hash.rb', line 10

def initialize(size)
  @size = size
  @xs   = []
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/atig/sized_hash.rb', line 15

def [](key)
  kv = @xs.assoc(key)
  if kv then
    @xs.delete kv
    @xs.push   kv
    kv[1]
  end
end

#[]=(key, value) ⇒ Object 



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# File 'lib/atig/sized_hash.rb', line 24

def []=(key,value)
  @xs.push [key, value]
  @xs.shift if @xs.size > @size
end

#key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/atig/sized_hash.rb', line 29

def key?(key)
  @xs.any?{|k,_| key == k }
end