java/jvm has had memory mapped bytebuffers for mor...
# datasciencej
jimn
11/14/2019, 6:15 AMjava/jvm has had memory mapped bytebuffers for more than a decade. numpy does this but only if the wrapper code is calling the c functions. apache arrow is attempting to use NIO from netty library buffers, and that has been failry high maintenance to date. if the existing libraries for datasets do zero-copy iteration, i haven't seen that. it's not as simple as strings and byte[] manipulation; the accesses are more like stl iterators over primtives.