Length
len
- len(variable)
- if variable is primitive string, returns the length of the input string
- if variable is primitive list, returns the length of the list
- if variable is primitive map, returns the number of key-value pairs in the map
- if variable is json array, returns the number of elements in the array
- if variable is json object, returns the number of key-value pairs in the object
- if variable is Tuple, returns the number of elements in the tuple
- if variable is Map, returns the number of key-value pairs in the map
- if variable is Table, returns row count of the table
- if variable is MetricStream, returns the number of data series in the metric
- if variable is Alert, returns the number of entries in the alert
- else return 0
len("Hello") // return an int64 value of 5
len([1, 2, 3]) // return an int64 value of 3
len({Name: "foo", Domain: "@gmail.com"}) // return an int64 value of 2