Merge commit 'da16527896d3087585c5e758083ea498dcabc2c3'

docs/content/en/functions/duration.md

@@ -0,0 +1,32 @@
+---
+title: duration
+description: Returns a `time.Duration` structure, using the given time unit and duration number.
+categories: [functions]
+menu:
+  docs:
+    parent: "functions"
+keywords: [time duration]
+signature: ["duration TIME_UNIT DURATION_NUMBER"]
+aliases: []
+---
+
+`time.Duration` converts a given number into a [`time.Duration`](https://pkg.go.dev/time#Duration) structure so you can access its fields. E.g. you can perform [time operations](https://pkg.go.dev/time#Duration) on the returned `time.Duration` value:
+
+    {{ printf "There are %.0f seconds in one day." (duration "hour" 24).Seconds }}
+    <!-- Output: There are 86400 seconds in one day. -->
+
+Make your code simpler to understand by using a [chained pipeline](https://pkg.go.dev/text/template#hdr-Pipelines):
+
+    {{ mul 7.75 60 | duration "minute" }} → 7h45m0s
+    {{ mul 120 60 | mul 1000 | duration "millisecond" }} → 2h0m0s
+
+You have to specify a time unit for the number given to the function. Valid time units are:
+
+Duration|Valid time units
+:--|:--
+hours|`hour`, `h`
+minutes|`minute`, `m`
+seconds|`second`, `s`
+milliseconds|`millisecond`, `ms`
+microseconds|`microsecond`, `us`, `µs`
+nanoseconds|`nanosecond`, `ns`