Unit 3.1: Variables and Assignments

• Variables are abstractions within programs which represent a value
• Values can be individual data points or a list/collection that contains many data values
• Types of data: numbers, Booleans (T/F), lists, and strings

Python

To define variables, just establish a variable name, and then use the equal sign to set it equal to a value, wheter it be a string, character, list, or boolean.

Javascript

global variables can be defined with the var keyword

Constant variables could be defined with the const keyword

Local variables could be defined with the let keyword.

Unit 3.2: Data Abstraction

• A list is made up of elements organized in a specific order
• An element is a unique, individual value in a list
• A string differs from a list as it is a sequence of characters rather than elements
• Data abstraction uses a list by taking specific data elements from a list and organizing into a whole, less complex representation of the values such as a table

Python

In python, lists could be used to organize similar data structures.

Lists could be split with the .split() method. The deliminator for the splitting operation could be set within the parenthesis. By default, the deliminator are whitespace characters.

Lists could also be joined into a variable with the .join() method. A deliminator could also be set for such a list.

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