Support the Write trait when std feature is enabled #32
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Many other hash function crates (like
md5
orcrypto-hash
) have their hash objects support thestd::io::Write
trait, with anywrite
calls updating the hash with the given data. This can be very handy, allowing things like usingstd::io::copy()
to easily hash the entire contents of an artibraryRead
type without having to read all the data into memory at once.I recently found myself wishing for this capability in the
sha1
crate too, so this PR adds aWrite
impl for theSha1
type (only when the"std"
feature is enabled, of course).