Type Constraints - Map

Map#

A map is a set of values indexed by key name. You can give a map a type, which will be the type of the values.

Project example#

Consider the following code:

In this project, we are creating a map of type number. We are initialising the map to have two keys: alpha and bravo. The values for the keys are 2 and 3 respectively. The fact that we have specified that the map is of type (number) means that all of the values have to match the number constraint.

Running the project#

Clicking the terminal will run terraform init and terraform apply commands. When prompted, type yes and press enter.

Map output value#

The map output value will print the whole map. We will also select a value out of a map by key using the [] syntax. The alpha_value output will print the value for the alpha key in the map, which will be 2.

Feel free to run the project and get a feel for how the code is working.

📝Note: Once you are done with the project, do not forget to run terraform destroy and then confirm with yes to delete all of the resources in this project.