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* lang/funcs: testing of functions through the lang package API The function-specific unit tests do not cover the HCL conversion that happens when the functions are called in a terraform configuration. For e.g., HCL converts sets to lists before passing it to the function. This means that we could not test passing a set in the function _unit_ tests. This adds a higher-level acceptance test, plus a check that every (pure) function has a test. * website/docs: update function documentation
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590 B
layout, page_title, sidebar_current, description
| layout | page_title | sidebar_current | description |
|---|---|---|---|
| functions | concat - Functions - Configuration Language | docs-funcs-collection-concat | The concat function combines two or more lists into a single list. |
concat Function
-> Note: This page is about Terraform 0.12 and later. For Terraform 0.11 and earlier, see 0.11 Configuration Language: Interpolation Syntax.
concat takes two or more lists and combines them into a single list.
Examples
> concat(["a", ""], ["b", "c"])
[
"a",
"",
"b",
"c",
]