len

Function

  len — the type-dependent length of a value

Synopsis

len(v: record|array|set|map|type|bytes|string|ip|net|error) -> int64

Description

The len function returns the length of its argument val. The semantics of this length depend on the value’s type.

Supported types include:

• record
• array
• set
• map
• error
• bytes
• string
• ip
• net
• type

Example:

Take the length of various types:

yield {this,len:len(this)}

[1,2,3]
|["hello"]|
{a:1,b:2}
"hello"
10.0.0.1
1

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