Add type explanation

2023-02-06 19:38:57 +01:00 · 2023-02-06 19:38:57 +01:00 · 865e0819a1
commit 865e0819a1
parent 01d3d5d33f
1 changed files with 3 additions and 0 deletions
--- a/image_prediction/image_extractor/extractors/parsable.py
+++ b/image_prediction/image_extractor/extractors/parsable.py
@ -146,6 +146,9 @@ def make_maybe_image_metadata_pair(image: Either, metadata: Either):
    # return Right(make_image_metadata_pair).amap(image).amap(metadata).either(left(context), right(identity))

    # 3)
+    # a := Image
+    # b := Metadata
+    # c := ImageMetadataPair
    return (
        image.bind(right(make_image_metadata_pair))  # m a >>= m (a -> b -> c) -> m (b -> c)
        .amap(metadata)  # m (b -> c) <*> m b -> m c