github.com/eliastor/durgaform@v0.0.0-20220816172711-d0ab2d17673e/website/docs/language/functions/index_function.mdx (about)

     1  ---
     2  page_title: index - Functions - Configuration Language
     3  description: The index function finds the element index for a given value in a list.
     4  ---
     5  
     6  # `index` Function
     7  
     8  `index` finds the element index for a given value in a list.
     9  
    10  ```hcl
    11  index(list, value)
    12  ```
    13  
    14  The returned index is zero-based. This function produces an error if the given
    15  value is not present in the list.
    16  
    17  ## Examples
    18  
    19  ```
    20  > index(["a", "b", "c"], "b")
    21  1
    22  ```
    23  
    24  ## Related Functions
    25  
    26  * [`element`](/language/functions/element) retrieves a particular element from a list given
    27    its index.