Hash combining the individual join field value hashes from RCombinedJoinFieldValue.
Uses the implementation from boost::hash_combine. See https://www.boost.org/doc/libs/1_87_0/libs/container_hash/doc/html/hash.html#notes_hash_combine for more background. In particular, it mentions: "Several improvements of the 64 bit function have been subsequently
proposed, by <a href="https://zimbry.blogspot.com/2011/09/better-bit-mixing-improving-on.html" >David Stafford</a>, <a href="https://mostlymangling.blogspot.com/2019/12/stronger-better-morer-moremur-better.html"
>Pelle Evensen</a>, and <a href="http://jonkagstrom.com/mx3/mx3_rev2.html"
>Jon Maiga</a>. We currently use Jon Maiga’s function."
Copyright 2005-2014 Daniel James. Copyright 2021, 2022 Peter Dimov. Distributed under the Boost Software License, Version 1.0. https://www.boost.org/LICENSE_1_0.txt
Based on Peter Dimov's proposal http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf issue 6.18.
Boost Software License - Version 1.0 - August 17th, 2003
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Definition at line 109 of file RNTupleJoinTable.hxx.
Public Member Functions | |
| std::size_t | mix (std::size_t init) const |
| std::size_t | operator() (const RCombinedJoinFieldValue &joinFieldVal) const |
|
inline |
Definition at line 119 of file RNTupleJoinTable.hxx.
|
inline |
Definition at line 110 of file RNTupleJoinTable.hxx.
