terraform/website/docs/language/functions/index_function.html.md

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language	index - Functions - Configuration Language	docs-funcs-collection-index	The index function finds the element index for a given value in a list.

index Function

index finds the element index for a given value in a list.

index(list, value)

The returned index is zero-based. This function produces an error if the given value is not present in the list.

Examples

> index(["a", "b", "c"], "b")
1

Related Functions

• element retrieves a particular element from a list given its index.