std: expose the keyed HashMap constructor, for runtime-less use. #8186
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This conveniently also makes it possible to use this as the TLS map so a TLS lookup is O(1) instead of O(n) |
The `new` constructor uses the task-local RNG to retrieve seeds for the two key values, which requires the runtime. Exposing a constructor that takes the keys directly allows HashMaps to be used in programs that wish to avoid the runtime.
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The `new` constructor uses the task-local RNG to retrieve seeds for the two key values, which requires the runtime. Exposing a constructor that takes the keys directly allows HashMaps to be used in programs that wish to avoid the runtime.
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The
newconstructor uses the task-local RNG to retrieve seeds for thetwo key values, which requires the runtime. Exposing a constructor that
takes the keys directly allows HashMaps to be used in programs that wish
to avoid the runtime.