A certainl part of an if() structure never gets executed.

[Denis McMahon]

On Sat, 15 Jun 2013 19:18:53 +0300, Nick the Gr33k wrote:

> In both situations we still have 2 memory units holding values, so hows
> that different?

Consider that each named variable is a pointer to a memory location that 
holds a value. This is one of the ways in that a typed compiled language 
and an untyped scripted language may differ in their treatment of data 
items (or variables).

Consider the following C and Python code:

C:

int a, b;
b = 6;
a = b;

In C, this places the numeric value 6 into the memory location identified 
by the variable "b", then copies the value from the location pointed to 
by "b" into the location pointed to by "a".

b is a pointer to a memory location containing the value 6
a is a pointer to another memory location also containing the value 6

Python:

b = 6
a = b

In Python, this first puts the value 6 in in a memory location and points 
"b" at that memory location, then makes "a" point to the same memory 
location as "b" points to.

b is a pointer to a memory location containing the value 6
a is a pointer to the same memory location

Do you understand the difference?

-- 
Denis McMahon, denismfmcmahon at gmail.com