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Readwise/Full Document Contents/Terraform 1.8 Provider Functions for AWS, Google Cloud, and Kubernetes.md

Highlights

To access a provider-defined function, reference the provider:: namespace with the local name of the Terraform Provider. For example, you can use the direxists function by including provider::local::direxists() in your Terraform configuration. ([View Highlight] (https://read.readwise.io/read/01hv544brw8rew2wjg508bwz0j))

The Google Cloud provider also includes a new region_from_zone provider-defined function that helps obtain region names from a given zone (e.g. “us-west1” from “us-west1-a”). This simple string processing could be achieved in multiple ways using Terraform’s built-in functions previously, but the new function simplifies the process:
locals {
zone = “us-central1-a”

ways to derive the region “us-central1” using built-in functions

region_1 = join("-", slice(split("-", local.zone), 0, 2))
region_2 = substr(local.zone, 0, length(local.zone)-2)

our new region_from_zone function makes this easier!

region_3 = provider::google::region_from_zone(local.zone)
} ([View Highlight] (https://read.readwise.io/read/01hv544p54nqn66x34b9wsq8hx))