Menu

Caution

Grafana Alloy is the new name for our distribution of the OTel collector. Grafana Agent has been deprecated and is in Long-Term Support (LTS) through October 31, 2025. Grafana Agent will reach an End-of-Life (EOL) on November 1, 2025. Read more about why we recommend migrating to Grafana Alloy.

This is documentation for the next version of Agent. For the latest stable release, go to the latest version.

Documentationbreadcrumb arrow Grafana Agentbreadcrumb arrow Flow modebreadcrumb arrow Referencebreadcrumb arrow Standard librarybreadcrumb arrow join
Open source

join

join all items in an array into a string, using a character as separator.

river 
join(list, separator)

Examples

river 
> join(["foo", "bar", "baz"], "-")
"foo-bar-baz"
> join(["foo", "bar", "baz"], ", ")
"foo, bar, baz"
> join(["foo"], ", ")
"foo"