One Pager Cheat Sheet

• In this lesson, we will explore the string type and common related operations in introductory programming languages.
• Strings are a data type in most programming languages which are declared by enclosing characters with single ('') or double quotation marks ("") and contain a sequence of characters or array of characters which can be accessed and manipulated with properties and methods.
• Python and JavaScript strings can be declared with single or double quotations, and their characters can be accessed with indices starting from 0, as illustrated by name[2] printing r.
• Yes, both Python and JavaScript support declaring a string literalusing single or double-quotation marks, as evidenced by the code blocks above.
• Strings in programming languages such as Python and JavaScript are collections of characters, including both upper and lower case letters, numbers, symbols, and other characters, and are therefore not case-sensitive.
• Strings can be manipulated through comparison, combination, removal, and addition of characters or strings in programming languages.
• Python and JavaScript support string concatenation, multiplication, and multiple built-in methods to manipulate strings.
• The + operator in Python is used to concatenate strings, such as "Sara" and "12" stored in variables name and age, respectively, resulting in the output string "Sara12".
• The print() function in JavaScript prints the number of spaces in the argument text, which in this example is 4.
• Strings are immutable and cannot be reassigned characters, so double quotation marks must be used when including single quotation marks in a string.
• We discussed various string operations that can be used to modify and understand the properties of already declared string variables.