scovich commented on PR #7946:
URL: https://github.com/apache/arrow-rs/pull/7946#issuecomment-3105465285

   > convenience functions to streamline interacting with Variants seem to be 
absent as well. Is there an interest in implementing traits for Variants like 
Index/IndexMut? I'm happy to take either of these efforts.
   
   Problem is, those traits return references (which the compiler then 
transparently dereferences). AFAIK, it's impossible to implement those traits 
if the return value is "manufactured" by the function call itself, because that 
would require returning a reference to a temporary object that goes out of 
scope as soon as the function returns.
   
   ... which is why we have `Index` for `VariantMetadata` (which _does_ return 
a reference to an underlying string entry), but not for `Variant`


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