First member of item.

This method shortcut the allocation of a Pair, thus should be more time and memory efficient.

Property definitions

cartesian $ CartesianIterator :: item_e
	# First member of `item`.
	#
	# This method shortcut the allocation of a `Pair`, thus should be more time and memory efficient.
	fun item_e: E do return ice.item
lib/cartesian/cartesian.nit:173,2--176,33