Enumeration Caseswift 6.0.3FoundationEssentials

    previousTimePreservingSmallerComponents

    If there is no matching time before the end of the next instance of the next higher component to the highest specified component in the DateComponents argument, the algorithm will return the previous existing value of the missing component and preserves the lower components’ values.

    iOS
    8.0+
    macOS
    10.10+
    tvOS
    9.0+
    watchOS
    2.0+
    case previousTimePreservingSmallerComponents
    Mangled symbol
    s20FoundationEssentials8CalendarV14MatchingPolicyO39previousTimePreservingSmallerComponentsyA2EmF What are these?
    FNV24 hash
    1G2HG

    For example, during a daylight saving transition there may be no 2:37am. The result would then be 1:37am, if that does exist.

    Other cases

    • case nextTime

      If there is no matching time before the end of the next instance of the next higher component to the highest specified component in the DateComponents argument, the algorithm will return the next existing time which exists.

    • case nextTimePreservingSmallerComponents

      If specified, and there is no matching time before the end of the next instance of the next higher component to the highest specified component in the DateComponents argument, the method will return the next existing value of the missing component and preserves the lower components’ values (e.g., no 2:37am results in 3:37am, if that exists).

    • case strict

      If specified, the algorithm travels as far forward or backward as necessary looking for a match.