AngouriMath
SettingsState
Description
Summary
What every setting reads as, taken together, so that something holding a result computed
under the settings of a moment can tell whether those settings still hold.
under the settings of a moment can tell whether those settings still hold.
Remarks
scope opened and closed leaves every setting exactly as it found it while moving a
counter twice, and the library opens such scopes constantly — a single
numeric downcasting in
"everything has changed" continuously and is useless to a cache. Measured, not assumed:
the counter was built first and threw away the whole benefit.
is exact rather than a hash — releasing a scope restores the very frame object that was
there before it, since the chain below a pushed frame is never rebuilt. So comparing
snapshots is a handful of reference comparisons with no chance of collision, and a
balanced open-and-close compares equal, which is the whole point.
Members
registered
FieldSnapshot
Method
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