class Rinda::Tuple
A tuple is the elementary object in Rinda programming. Tuples may be matched against templates if the tuple and the template are the same size.
Public Class Methods
Public Instance Methods
[](k)
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Accessor method for elements of the tuple.
# File lib/rinda/rinda.rb, line 69 def [](k) @tuple[k] end
each() { |k, v| ... }
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Iterate through the tuple, yielding the index or key, and the value, thus ensuring arrays are iterated similarly to hashes.
# File lib/rinda/rinda.rb, line 84 def each # FIXME if Hash === @tuple @tuple.each { |k, v| yield(k, v) } else @tuple.each_with_index { |v, k| yield(k, v) } end end
fetch(k)
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Fetches item k
from the tuple.
# File lib/rinda/rinda.rb, line 76 def fetch(k) @tuple.fetch(k) end
size()
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The number of elements in the tuple.
# File lib/rinda/rinda.rb, line 62 def size @tuple.size end
value()
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Return the tuple itself
# File lib/rinda/rinda.rb, line 94 def value @tuple end
Private Instance Methods
hash?(ary_or_hash)
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# File lib/rinda/rinda.rb, line 100 def hash?(ary_or_hash) ary_or_hash.respond_to?(:keys) end
init_with_ary(ary)
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Munges ary
into a valid Tuple.
# File lib/rinda/rinda.rb, line 107 def init_with_ary(ary) @tuple = Array.new(ary.size) @tuple.size.times do |i| @tuple[i] = ary[i] end end
init_with_hash(hash)
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Ensures hash
is a valid Tuple.
# File lib/rinda/rinda.rb, line 117 def init_with_hash(hash) @tuple = Hash.new hash.each do |k, v| raise InvalidHashTupleKey unless String === k @tuple[k] = v end end