_.isNil(value) source

_.filter(collection, [predicate=_.identity])

_.assignIn(object, [sources])

_.spread(func, [start=0])

_.capitalize([string=''])

_.flattenDeep(array)

_.isNull(value) source

_.random([lower=0], [upper=1], [floating])

_.wrap(value, [wrapper=identity])

_.gt(value, other)