[Python-tut] Iterating Over any Object

[wtd]

So we've seen how we can do this in Ruby. It's pretty darn simple.

code:

class Name    attr_reader :first, :last    def initialize(first, last)       @first, @last = first, last    end      def each       yield @first       yield @last    end end

Well, as it turns out, it's pretty easy in Python too.

code:

class Name(object):    def __init__(self, first, last):       self.__first, self.__last = first, last    first = property(lambda self: self.first)    last  = property(lambda self: self.last)    def __iter__(self):       yield self.__first       yield self.__last

We can now create a new Name object.

code:

bob = Name("Bob", "Smith")

And iterate over its component names.

code:

for name in bob:    print name

[MysticVegeta]

Isnt iteration calling of a same procedure inside that procedure in turing?

code:

proc something (x : int, y : int) if y = 1 then return else something(x, y-1) end if end something

Is that what you are talking about?

[Mazer]

That's recrusion, MysticVegeta.

[MysticVegeta]

But the turing book says calling a procedure in that procedure is called iteration and calling a function inside the same function is called recursion...

[1of42]

If it says that, it's wrong.

[Hikaru79]

MysticVegeta wrote:

But the turing book says calling a procedure in that procedure is called iteration and calling a function inside the same function is called recursion...

Iteration is going through a set or list or array, etc, or objects/values/etc, in a sequential manner. Now, what the book might have given is a recursive example of iteration, which is entirely possible. However, there is a distinction between the two.