buffer: add Buffer compare by offset
Pull Request check-list
-
Does make -j8 test
(UNIX) orvcbuild test nosign
(Windows) pass with this change (including linting)? -
Is the commit message formatted according to [CONTRIBUTING.md][0]? -
If this change fixes a bug (or a performance problem), is a regression test (or a benchmark) included? -
Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
Affected core subsystem(s)
buffer
Description of change
Adds additional offset
, length
and thisOffset
arguments
to Buffer.prototype.compare
to allow comparison of sub-ranges
of two Buffers without requiring Buffer.prototype.slice()
Fixes: https://github.com/nodejs/node/issues/521 /cc @trevnorris @rootslab @jorangreef