Things that are different between Catmandu and Metafacture

Fix:

• Indexing of array/repeatable fields: Catmandu starts with 0, Metafacture starts with 1 due to JsonDecoder. (Not sure if this is broader Metafacture/Catmandu level).
• set_: MF alias for add_functions, Catmandu does not create an intermediate structure, MF does.
• Additional functions and binds:
  • Metafacture:
    • add_hash and add_array
    • TODO
  • Catmandu
    • some binds
    • iterate bind
    • TODO
• do list(path:"...", "var":"...) in MF Fix the var needs to be in " in catmandu not
• substring-function does not define start and end index but start and number of signs.
• Array-Wildcards: Catmandu: $last/$first write, MF they do not
• MF does not support root ., Catmandu does
• move_field: MF cannot move field with same name from string to object
• vacuum: catmandu can catch " ", MF does not
• copy_field array of string with single value: MF copies them as simple field, Catmand keeps the array
• remove_field: MF cannot delete field from array of objects

Metafacture/Catmandu-Level:

• embedded fix in catmandu commands can be separated by ;
• YAML encoding when transforming to yaml from marc catmandu shows the hidden _id by default too, metafacture does not
• Output Arrays: MF does not know what an array is, fix need to add Array marker for JSON Arrays, Catmandu outputs Arrays as arrays, Catmandu does not know repeatable fields in JSON?
• Marc handling in MF and Catmandu are completly different. MF: Leader-Element, XXX+Indicies = Toplevel elements, Subfilds=> Subfields, difficulties are created by repeated subfields, Catmandu: _id, array-in-array, unclear structure) (MF has an big advantage here. MF: uses generic fix, Catmandu: uses its special Marc-Fix