Need `Prim.principalToWord8Array`. about motoko-base

[chenyan-dfinity]

We are still trying to understand what is Blob: dfinity/motoko#966
For now, you can iterate the Blob via for (x in blob.bytes())

[chenyan-dfinity]

You can use Prim.blobOfPrincipal x

[enzoh]

Is Blob just an alias for [Word8]?

[enzoh]

Or can I convert type Blob to [Word8]? I don't see much in the Blob API. Sorry if the original title for this issue was ambiguous.

[crusso]

Yup, that's the way to go. Blob is actually more compact than [Word8] (in the current implementation) since we don't specialize array representations (Joachim wants to eventually).

[crusso]

For a hash, there is actually a Word32 hash on Principals in base library Principal.mo, defined as ... Blob.hash (Prim.blobOfPrincipal p) ...

[enzoh]

Cool thanks! Looks like what I wanted was func (x) { Iter.toArray<Word8>(Prim.blobOfPrincipal(x).bytes())) }.