GreyScript

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Maps ​

There is no difference in terms of behavior between GreyScript and MiniScript.

The final basic data type in MiniScript is the map. A map is a set of key-value pairs, where each unique key maps to some value. In some programming environments, this same concept is called a dictionary.

Source: MiniScript manual

Operations ​

gs
// concatenation
a = { "test": 1 } + { "foo": "bar" } // merges two maps into one - results in {"test":1,"foo":"bar"}

// equality
a = { "test": 1 } == { "test": 1 } // returns true (1) if two maps are equal otherwise false (0) - results in true (1)

// inequality
a = { "test": 1 } != { "test": 1 } // returns true (1) if two maps are inequal otherwise false (0) - results in false (0)

// index
a = a["test"] // get value of key - results in 1

// dot index
a = a.foo // get value of key - results in "bar"

Isa ​

Beside of using typeof, to determine if a variable is a map, you can also use isa.

gs
myVariable = {}

print(myVariable isa map) // prints 1

Extend type ​

It is possible to extend your own methods to the map type.

gs
map.toString = function
  return str(self)
end function

print(({ "test": 123 }).toString()) // prints {"test":123}