Dasel
v2
v2
  • Introduction
  • GitHub
  • Supported file formats
  • Memory usage
  • Installation
  • Commands
    • Select
    • Put
    • Delete
  • Functions
    • Selector Overview
    • All
    • And
    • Append
    • Count
    • Equal
    • Filter
    • FilterOr
    • First
    • Index
    • Join
    • Key
    • Keys
    • Last
    • Len
    • LessThan
    • MapOf
    • Merge
    • MoreThan
    • Not
    • Or
    • OrDefault
    • Parent
    • Property
    • String
    • Null
    • This
    • Type
  • Examples
    • Using dasel as a go package
    • Basics
    • Change file format
    • Filtering objects based on present/missing key
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  1. Functions

Len

Len expects no arguments and can be used on lists or objects. It returns the number of elements contained within the list/map.

Examples

$ echo '{"numbers":[1,2,3,4,5,6,7,8,9]}' | dasel -r json 'len()'
1

$ echo '{"numbers":[1,2,3,4,5,6,7,8,9]}' | dasel -r json 'numbers.len()'
9
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Last updated 2 years ago