A Note on Variable Types.md

A Note on Value Types

While working in Lua for Civ VI, you will regularly encounter six types of values: nil, number, string, boolean, function and table. You will also encounter object variables; though they are often technically tables, are utilised significantly differently.

Civ VI occasionally uses Hungarian Notation, prefixing variables with lowercase characters indicating their purpose. While this does not always clearly indicate the type of the variable, it often can be extrapolated. Additionally, usage is not always consistent, so you might find cases where the variables don't follow this pattern.

Here are some often encountered prefixes:

Prefix	Meaning	Value Type	Notes
i	integer	number
f	float	number
e	enumerator	number
h	hash	number
b	boolean	boolean
s	string	string
t	table	table
k	constant	N/A	this prefix does not indicate type
p	pointer	object

The notation is sometimes extended to include the scope of a variable, optionally separated by an underscore. This extension is often also used without the Hungarian type-specification:

• g_Wheels : member of a global namespace
• m_wheels, _wheels : member of a structure/class
• s_wheels : static member of a class
• c_wheels : static member of a function