isBinding: (subject)-> subject instanceof Binding

isIterable: (subject)-> checkIf.isObject(subject) and checkIf.isNumber(subject.length)

isDom: (subject)-> subject.nodeName and subject.nodeType is 1

isDomInput: (subject)->
	nodeName = subject.nodeName.toUpperCase()
	return nodeName is 'INPUT' or nodeName is 'TEXTAREA' or nodeName is 'SELECT'

isDomRadio: (subject)-> subject.type is 'radio'

isDomCheckbox: (subject)-> subject.type is 'checkbox'

isElCollection: (subject)-> (subject instanceof NodeList) or (subject instanceof HTMLCollection) or (checkIf.isDefined(jQuery) and subject instanceof jQuery)

domElsAreSame: (iterable)->
	type = iterable[0].type
	itemsWithSameType = [].filter.call iterable, (item)-> item.type is type

	return itemsWithSameType.length is iterable.length