keys

utility

Returns array indices, object keys, or DataFrame column names

Syntax

keys(value)

value (array | object | DataFrame)

The value to extract keys from

array

Array of keys, indices, or column names

Get object keys

Input:

{name: "Alice", age: 30} | keys

Output:

["name", "age"]

Get DataFrame column names

Input:

. | keys

Output:

["id", "name", "email"]

The keys() function extracts the keys from objects, indices from arrays, or column names from DataFrames.

Use keys() to discover the structure of data, iterate over object properties, or get column names from DataFrames.