Looping

Components

Looping's components: (a = b x c)
(a) what to be looped(b)
(b) how many times (c)
- Unknown
- Known
= 
(c) result
(d) exit condition or stop condition

Which one?
If you know what to be looped and how many times you loop and what to be looped, you can use for.
If you don't know how many times you loop but know what to be looped and the what result you want, you can use while.

For: a, b, c
While: d

Examples
Python looping
- Python For
Example (Python)
>>> for i in range (0,2):
    print i

  
0
1
- Python While
 Example (Python):
>>> x=1
>>> while x < 3:
    x = x + 1
    print x

  
2
3

C Looping
- For
Usage: for (start counter; end counter; how to get to end counter)

Example:

- While
 This the most basic loop in C.
check first, do last.

Example:



- do..While
do.. While loop is just like while except the condition to test is behind
do first, check later

Preposition

AT / IT / ON

Syarat property

Property access must assign to the property
or use its value

Event driven programming

What you act upon ,,,,,

Technology what you offer?

Routing = passing

Think of three router triangle.


Passing

Passing polos

Passing if (conditional)


Access-list technology
block certain packet with label ....
permit certain packet with label ....

Access-list standard: if you want examine only layer 3 use this type
Access-list extended: if you want to examine packet's at layer 3 (network, transport, application) and above use this type

NAT
translate certain packet with label ....
don't translate certain packet with label .....

Spanning-tree
: distributed technologies, means each switch process and tell other

OSPF
: distributed technologies

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