Document a way for other languages to get the same output for a given input string about zero-allocation-hashing HOT 4 CLOSED

We can't figure out how to have the python implementation find the same key for LongHashFunction.xx().hashChars("test")

You probably need to encode a string in UTF-16, because that's what essentially the Java's character arrays are. Also would need byte order, though.

from zero-allocation-hashing.

anyone been able to provide this? we would be interested in this as well.

from zero-allocation-hashing.

We had the same issue, except with nodejs.

In the end what produced the same hash was:

LongHashFunction.xx(123).hashBytes("teststring".getBytes("UTF-8"))

and in nodejs:

const hash = XXHash.hash64(Buffer.from('teststring', 'utf-8'), 123);
const hashValue = hash.readBigUInt64LE();

I hope this helps someone in the future.

from zero-allocation-hashing.

This should not be an issue.

the default encoding in different languages are not same. to get the same hash result, the binary layout of the input must be exactly same, so select a well defined encoding codec before hash.

from zero-allocation-hashing.