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Martin Atkins e7d71995f6 website: Document the remaining "collection" functions

This also renames some of the existing function pages whose source
filenames were not matching the usual naming scheme (.html.md).

2018-10-16 18:47:33 -07:00

layout, page_title, sidebar_current, description

layout	page_title	sidebar_current	description
functions	transpose function	docs-funcs-collection-transpose	The transpose function takes a map of lists of strings and swaps the keys and values.

`transpose` Function

transpose takes a map of lists of strings and swaps the keys and values to produce a new map of lists of strings.

Examples

> transpose({"a" = ["1", "2"], "b" = ["2", "3"]})
{
  "1" = [
    "a",
  ],
  "2" = [
    "a",
    "b",
  ],
  "3" = [
    "b",
  ],
}