[yt-dev] Question: adding new fields for GAMER

[Hsi-Yu Schive]

Dear all,

I'm trying to add new fields used in GAMER by editing the file "field.py",
but I'm confused about the following declarations.

   KnownGAMERFields = FieldInfoContainer()
   add_gamer_field = KnownGAMERFields.add_field

   GAMERFieldInfo = FieldInfoContainer.create_with_fallback(FieldInfo)
   add_field = GAMERFieldInfo.add_field

What is the difference between "KnownGAMERField" and "GAMERFieldInfo"?
To me, it seems that they are both instantiations of the class FieldInfoContainer,
except that GAMERFieldInfo has a fallback function "FieldInfo".
Similarly, what's the difference between "add_gamer_field" and "add_field"?

Thanks in advance for the help!!

Sincerely,
Hsi-Yu


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