Expressions and Constraints
In Terraform, expressions are computed values within the configuration. Terraform has rich support for different types of expressions, such as a reference to a data source, arithmetic evaluation, complex types, and built-in functions.
However, there are a few restrictions on the usage of an expression in specific places. For example, it is not allowed within the backend {} block. The official documentation of the Terraform language clearly indicates the scenarios where it can be used and cases where it is not applicable.
Data Types
The result of any expression is a value. Suppose that there is an expression such as 2 + 3; it will result in 5, which is the value.
In Terraform, there are different types of values supported, as follows:
string: Any sequence of characters such asHi,BobWilliams, ordev-teamcan be represented with this type.number: This can be used to represent numerical values such as 6 and 10.2 (both decimal numbers...
