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module REXML
class SyncEnumerator
include Enumerable
# Creates a new SyncEnumerator which enumerates rows of given
# Enumerable objects.
def initialize(*enums)
@gens = enums
@biggest = @gens[0]
@gens.each {|x| @biggest = x if x.size > @biggest.size }
end
# Returns the number of enumerated Enumerable objects, i.e. the size
# of each row.
def size
@gens.size
end
# Returns the number of enumerated Enumerable objects, i.e. the size
# of each row.
def length
@gens.length
end
# Enumerates rows of the Enumerable objects.
def each
@biggest.zip( *@gens ) {|a|
yield(*a[1..-1])
}
self
end
end
end
|
