map mixed iterators

map works on any iterable, so we might end up passing one list and one string to it.

examples/functional/map_mixed.py

v1 = ['foo', 'bar', 'baz']
v2 = 'abc'

result = map(lambda x,y: x+y, v1, v2)
print(result)
print( list(result) )

<map object at 0x7fc5e9ff4e80>
['fooa', 'barb', 'bazc']