In Files
- generator.rb
Class/Module Index
![[+]](./images/find.png "show/hide quicksearch")
SyncEnumerator
SyncEnumerator creates an Enumerable object from multiple Enumerable objects and enumerates them synchronously.
Example¶ ↑
require 'generator' s = SyncEnumerator.new([1,2,3], ['a', 'b', 'c']) # Yields [1, 'a'], [2, 'b'], and [3,'c'] s.each { |row| puts row.join(', ') }
Public Class Methods
new(*enums)
click to toggle source
Creates a new SyncEnumerator which enumerates rows of given Enumerable objects.
# File generator.rb, line 224
def initialize(*enums)
@gens = enums.map { |e| Generator.new(e) }
end
Public Instance Methods
each()
click to toggle source
Enumerates rows of the Enumerable objects.
# File generator.rb, line 252
def each
@gens.each { |g| g.rewind }
loop do
count = 0
ret = @gens.map { |g|
if g.end?
count += 1
nil
else
g.next
end
}
if count == @gens.size
break
end
yield ret
end
self
end
end?(i = nil)
click to toggle source
Returns true if the given nth Enumerable object has reached the end. If no argument is given, returns true if any of the Enumerable objects has reached the end.
# File generator.rb, line 243
def end?(i = nil)
if i.nil?
@gens.detect { |g| g.end? } ? true : false
else
@gens[i].end?
end
end
length()
click to toggle source
Returns the number of enumerated Enumerable objects, i.e. the size of each row.
# File generator.rb, line 236
def length
@gens.length
end
size()
click to toggle source
Returns the number of enumerated Enumerable objects, i.e. the size of each row.
# File generator.rb, line 230
def size
@gens.size
end