Terraform types

• https://www.terraform.io/docs/language/expressions/types.html

• string: a sequence of Unicode characters representing some text, like "hello".
• number: a numeric value. The number type can represent both whole numbers like 15 and fractional values like 6.283185.
• bool: a boolean value, either true or false. bool values can be used in conditional logic.
• list or tuple: a sequence of values, like ["us-west-1a", "us-west-1c"]. Elements in a list or tuple are identified by consecutive whole numbers, starting with zero.
• map or object: a group of values identified by named labels, like {name = "Mabel", age = 52}.

Example:

 type        = list(string)
 default     = []

List example: ["us-west-1a", "us-west-1c"]

Map/Object example

{
  name = "John"
  age  = 52
}

• https://stackoverflow.com/a/62145212

variable "amis" {
 type = "map"
 default = {
   "us-east-1" = "ami-b374d5a5"
   "us-west-2" = "ami-4b32be2b"
 }
}

Related terms

• variable
• List of object required
• Element 0: object required

See also

• Terraform, OpenTofu, Terrakube.org, Installation, Terraform AWS, Terraform GCP, Terraform commands, Terraform Cloud, Terraform Enterprise (TFE), HCL, HIL, meta-arguments, providers, modules, resource, provisioners, data sources, backends: remote backends, examples, configuration files, state files, variables, types, Terraform Registry, conditionals: depends_on, functions, Blocks, dynamic blocks, errors, Terragrunt, Terraformer, Terratest, Terraform certifications, Terraform map type, Terraform Associate, Terraform: list type, TF_VAR_, TF_LOG, Terraform provider versioning, Terraform Style Conventions, Required version, Terraform plugin, Terraform Named Values, tags, Changelog, tfsec, tflint, Operators, Expressions: for, splat, Debugging, Namespaces, Terraform Landing Zones, CDKTF, Atmos