# keys
Return the keys of a map.
## Syntax
[keys $map]
## Examples
[keys %{ name "Alice" age 30 }] # @{ "name" "age" } [keys %{ a 1 b 2 c 3 }] # @{ "a" "b" "c" }
## Returns
List of key strings.
## See Also
`values`, `entries`, `merge`, `len`