Class: String

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

Instance Method Summary collapse

Instance Method Details

#hash_vl ⇒ Object 



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# File 'ext/string_hashing/string_hashing.c', line 9

VALUE method_hash_vl(VALUE self, VALUE bitlength);

#hash_vl_rb(length) ⇒ Object 



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# File 'lib/string.rb', line 7

def hash_vl_rb(length)
  return 0 if self == ""

  x = self.bytes.first << 7
  m = 1000003
  mask = (1<<length) - 1
  self.each_byte{ |char| x = ((x * m) ^ char.to_i) & mask }

  x ^= self.bytes.count
  x = -2 if x == -1
  x
end

#simhash(options = {}) ⇒ Object 



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# File 'lib/string.rb', line 2

def simhash(options={})
  split_by = options.delete(:split_by) || " "
  Simhash.hash(self.split(split_by), options)
end