Values & types

Type	Examples	Notes
nil	nil	absence of a value
bool	true, false
number	42, 3.14, -7	64-bit float; integral values print without a decimal
string	"hi", 'hi'	immutable
list	[1, 2, 3]	ordered, mutable, heterogeneous
dict	{"a": 1}	string-keyed map, mutable
function	fn ..., closures	first-class
class / instance	class ..., new C()
module	import ...

Use type(x) to get a type name at runtime:

print(type(42))        # number
print(type("hi"))      # string
print(type([1,2]))     # list
print(type(nil))       # nil