Differences

This shows you the differences between two versions of the page.

--- programming_general:object-orientation_fundamentals_slides [2020/09/14 00:30] – mithat
+++ programming_general:object-orientation_fundamentals_slides [2021/11/28 19:14] – [Object-oriented thinking] mithat
@@ Line 1: / Line 1: @@
 ~~SLIDESHOW~~
 ====== Object-Orientation Fundamentals ======
+Mithat Konar
 ===== Why object-orientation? =====
   * **Object-oriented programming** came about to support **object-oriented analysis and design** (OOAD).
   * OOAD created to solve issues involved in designing and managing large applications.
-===== Procedural/structured programming thinking =====
+===== Procedural thinking =====
-  * What needs to happen?
+  * Break down large problems into functions or procedures.
-  * Focus on creating a set of functions to do the things that need to get done.
+  * //What needs to happen?//
   * "Verb" oriented.
-===== Object-thinking =====
+===== Object-oriented thinking =====
-  * What are the components (objects) that make up the problem?
+  * Break down large problems into the components (objects) that make up the problem.
   * How do they behave?
-  * How do the components interact?
+  * How do they interact?
   * "Noun" oriented.
@@ Line 51: / Line 51: @@
 ===== Encapsulation =====
-  * Consider:
+  * User changes the state of the oven only by engaging one or more of the operations in the oven’s interface.
-    * One changes the state of the oven only by engaging one or more of the operations in the oven’s interface.
+  * Don’t need to know how a magnetron, the clock’s electronics, or anything else works to use the oven.
-    * You don’t need to know how a magnetron, the clock’s electronics, or anything else works to use the oven.
+  * Only need to know what changes in state to expect from the “cook 1 minute” or “add 30 seconds” operations.
-    * You only need to know what changes in state to expect from the “cook 1 minute” or “add 30 seconds” operations.
+  * “I don’t care about how it works—I only need to know what it does,” is part of **encapsulation**.
-  * “I don’t care about how it works—I only need to know what it does,” is part of **encapsulation**: “to place in a capsule.”
 ===== Protection =====
@@ Line 70: / Line 69: @@
   * **object**: a program entity that encapsulates state (via attributes) and behavior (via operations involving those attributes) for some meaningful abstraction.
+===== Class-based object-orientation =====
+  * My Farberware 4241 microwave.\\
+{{:python:about_python:farberware4241-200.jpeg?nolink|}}
+  * All Farberware 4241s made from a master plan.
+    * Defines what the Farberware 4241 //is//.
+  * In computing terminology, the master plan is a **class**.
+  * A class contains all the specifications needed to make a particular kind of object.
+===== Class-based object-orientation =====
+  * Objects that have been created from classes are also called **instances**.
+  * The process of creating an instance from a class definition is called **instantiation**.
+===== Prototype-based object-orientation =====
+  * **Prototype-based object-orientation**: used in JavaScript and some other languages.
+  * Currently less common than class-based OOP.