Define Axon.ModelState functions as transforms - #656
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Inside `defn` you can only call other `defn` functions or transforms,
so calling e.g. `Axon.ModelState.trainable_parameters/1` from a
numerical definition raised:
cannot invoke Axon.ModelState.trainable_parameters/1 inside defn
because it was not defined with defn
All of these functions only manipulate the model state tree, so they
are now `deftransform`. Since `deftransform` compiles down to a plain
`def` plus the defn export registration, callers outside of `defn` are
unaffected.
Closes #575
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
polvalente
approved these changes
Aug 16, 2026
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Closes #575