saberbud/parallel-hashmap
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document that dump() works only for flat hash maps - issue #59

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greg
2020-08-07 12:35:21 -04:00
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@@ -21,7 +21,7 @@ This repository aims to provide a set of excellent **hash map** implementations,
- Easy to **forward declare**: just include `phmap_fwd_decl.h` in your header files to forward declare Parallel Hashmap containers [note: this does not work currently for hash maps with pointer keys]
- **Dump/load** feature: when a hash map stores data that is `std::trivially_copyable`, the table can be dumped to disk and restored as a single array, very efficiently, and without requiring any hash computation. This is typically about 10 times faster than doing element-wise serialization to disk, but it will use 10% to 60% extra disk space. See `examples/serialize.cc`. _(hash map/set only)_
- **Dump/load** feature: when a `flat` hash map stores data that is `std::trivially_copyable`, the table can be dumped to disk and restored as a single array, very efficiently, and without requiring any hash computation. This is typically about 10 times faster than doing element-wise serialization to disk, but it will use 10% to 60% extra disk space. See `examples/serialize.cc`. _(flat hash map/set only)_
- **Tested** on Windows (vs2015 & vs2017, vs2019, Intel compiler 18 and 19), linux (g++ 4.8.4, 5, 6, 7, 8, clang++ 3.9, 4.0, 5.0) and MacOS (g++ and clang++) - click on travis and appveyor icons above for detailed test status.