Terraform Contains Function

List & String Examples

In this short article, we will take a look at the contains function in Terraform, explaining what it is, and what it does, and share some practical examples using lists and strings. We will then compare it to the strcontainsfunction and also share some practical examples. Hope it helps!

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What is the Terraform contains function?

In Terraform, the contains function is used to check if a specified value exists within a given list or set. This function returns true if the value is found, and false otherwise. The function is categorized as a ‘collection’ function.

The syntax is as follows:

contains(list, value)

• list: The list, map, or set to search within.
• value: The value to search for within the list or set.

How to use Terraform contains — examples

In this example, given a list, the value after the comma is searched for, if it exists, it returns true. Because darth is in the first list it returns true.

contains(["darth", "luke", "yoda"], "darth")
true

In the second example because jarjar is not in the list, the function returns false.