This post contains two questions :
Is there a Checksum trait or something like that in standard library, so I can implement my structs with it ?
Second question is doing stuff like
impl From<&Foo> for Digest considered a bad practice ? If yes, is there a
Into analogue which is meant for a factory-like feature instead of conversion ?
Thanks for your help
What should a checksum trait do? There's
std::hash::Hash, but it might not be what you want.
Again, without knowing exactly what
Digest is, it's hard to give a definitive answer. In general, for direct, infallible conversions,
Into is used, like
impl From<&str> for String; for more constructions (which I assume is what you mean by "factory-like"), dedicated methods are provided, like
I'd say yes.
Into are typically lossless conversions between different representations of the same data. Conversion to
Digest is lossy, and it's a different kind of data.
Your traits can add methods to existing objects, so you can just add
.digest() method to everything.
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