yq
v4.x
v4.x
  • yq
  • How It Works
  • Recipes
  • Upgrading from V3
  • Commands
    • Evaluate
    • Evaluate All
    • Shell Completion
  • Operators
    • Add
    • Alternative (Default value)
    • Anchor and Alias Operators
    • Array to Map
    • Assign (Update)
    • Boolean Operators
    • Collect into Array
    • Column
    • Comment Operators
    • Compare Operators
    • Contains
    • Create, Collect into Object
    • Date Time
    • Delete
    • Divide
    • Document Index
    • Encode / Decode
    • Entries
    • Env Variable Operators
    • Equals
    • Eval
    • File Operators
    • Filter Operator
    • Flatten
    • Group By
    • Has
    • Keys
    • Kind
    • Length
    • Line
    • Load
    • Min
    • Map
    • Max
    • Modulo
    • Multiply (Merge)
    • Omit
    • Parent
    • Path
    • Pick
    • Pipe
    • Pivot
    • Recursive Descent (Glob)
    • Reduce
    • Reverse
    • Select
    • Shuffle
    • Slice Array
    • Sort
    • Sort Keys
    • Split into Documents
    • String Operators
    • Style
    • Subtract
    • Tag
    • To Number
    • Traverse (Read)
    • Union
    • Unique
    • Variable Operators
    • With
  • Usage
    • Output format
    • Working with CSV, TSV
    • Working with JSON
    • Working with Properties
    • Working with XML
    • Working with LUA
    • Working with TOML
    • Working with Shell Output
    • Front Matter
    • Split into multiple files
    • GitHub Action
    • Tips, Tricks, Troubleshooting
  • Github Page
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  1. Operators

Array to Map

Use this operator to convert an array to..a map. The indices are used as map keys, null values in the array are skipped over.

Behind the scenes, this is implemented using reduce:

(.[] | select(. != null) ) as $i ireduce({}; .[$i | key] = $i)

Simple example

Given a sample.yml file of:

cool:
  - null
  - null
  - hello

then

yq '.cool |= array_to_map' sample.yml

will output

cool:
  2: hello
PreviousAnchor and Alias OperatorsNextAssign (Update)

Last updated 2 years ago

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