Make `{encode,decode}_len` const fns? about data-encoding HOT 4 CLOSED

Thanks for the suggestion! I think it makes sense to do something like that however:

1. I won't have time to work on it before mid June.
2. I'm not sure it will be possible to have those functions const. If not I'll expose them in data-encoding-macro. Or if possible in nightly I'll add a feature.

I'll come back to this later.

from data-encoding.

As expected, making {encode,decode}_len const fns does not work for a few different reasons:

• I use traits and it's not possible to have const fn in traits.
• I use Cow (when the alloc feature is enabled) and rely on Deref which is not const.

So I'll go with the solution of making those functions macros in the data-encoding-macro crate. I'll only have time to look at this at the earliest this week-end though. I'll ping here when done.

from data-encoding.

You can test if #70 is fixing your issue. Instead of writing let buf = [0u8; BASE64.encode_len(32)]; as in your original comment, you would need to write let buf = [0u8; base64_encode_len!(32)]; instead. If that's useful, I'll merge and make a release.

from data-encoding.