Declaring Variables & Data Types
Lesson Summary
How to declare variables
Common data types in Pine Script
A variable is a way to label and store a value in memory so that it can be used later in the program. Variables can be updated, modified, and accessed throughout the program's execution. We use the “ = ” to create a variable.
Variable_name = Value
When naming variables, there are some important things to know.
The name must begin with a letter (upper or lowercase) or a an underscore “_”
They are case sensitive
Any character after the first can be a number
Examples
Variables in programming have a data type associated with them, which specifies the type of data that can be stored in that variable, and how those values can be used.
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These are the most common data types you will see in Pine Script:
Integer: a whole number, such as 1, 2, 3, etc.
Float: a number with a decimal point, such as 1.5, 2.3, 3.14159, etc.
Boolean: a true/false value, represented by the keywords true and false.
Color: can be either a built in color or custom color by using hex colors or rgb.
String: a sequence of characters enclosed in quotes, such as "hello", "world", "stocks", etc.
Next week, we will take a look at getting user inputs and creating a nice settings menu for indicators.
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