Count of elements

[paradajz]

Hi,

Given a YAML entry like this:

  buttons:
    pins:
    -
      port: "C"
      index: 5
    -
      port: "E"
      index: 7
    -
      port: "E"
      index: 9
    - 
      port: "E"
      index: 11

using yq I can do this to get total number of "pins" like this:

yq r demo.yml buttons.pins --length

Haven't found anything similar in README - can it be done with dasel?

[TomWright]

This isn't possible yet, I'm happy to support this feature though.

[paradajz]

That would be great, thank you.

[TomWright]

Hey @paradajz,

This is now supported as of v1.13.0.

echo 'buttons:
  pins:
  -
    port: "C"
    index: 5
  -
    port: "E"
    index: 7
  -
    port: "E"
    index: 9
  - 
    port: "E"
    index: 11' | dasel -p yaml --length '.buttons.pins'

4

[paradajz]

Amazing. Time to switch my project from jq/yq to dasel!

[paradajz]

Just FYI - switched!
https://github.com/paradajz/OpenDeck

I'm using YAML files in targets directory to generate C/C++ defines but also to generate pins in source code (it's a microcontroller project). I'm also using JSON files as descriptors for touchscreen interface (src/application/io/touchscreen/design - JSON seemed better for this). C++ code is also generated from JSON. Until now I've handled this via combination of yq and jq. So now I'm using dasel as an replacement for both. Adding the --length flag in dasel made it possible for me to switch since I make extensive use of that. Thank you for this project!

[TomWright]

That's a cool project! I'm glad you found dasel useful 🙂