In Lua, a hash is called a table. To get the value of a key in a table, you can use the square bracket notation with the key name inside.
Here's an example:
-- create a table
my_table = {name="John", age=30, city="New York"}
-- get the value of a key
print(my_table["age"]) -- output: 30
In this example, we create a table called my_table with three key-value pairs. To get the value of the age key, we use the square bracket notation with the key name inside. The output of the print() function will be 30.
You can also use dot notation to get the value of a key:
-- create a table
my_table = {name="John", age=30, city="New York"}
-- get the value of a key
print(my_table.age) -- output: 30
In this example, we use dot notation to get the value of the age key. This will also output 30.