You don't show the code that is problematic, so it is somewhat hard to give you concrete advice.

I recommend the following approach:

  1. Load the existing YAML file into a data structure.
  2. Add your data to the data structure.
  3. Write the data structure to a new YAML file.
  4. Rename the new YAML file over the old YAML file.

In reply to Re: YAML and perl by Corion
in thread YAML and perl by Prajith

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