LastIndexOf()

static int System.MemoryExtensions.LastIndexOf ( this ReadOnlySpan< char > span, ReadOnlySpan< char > value, StringComparison comparisonType )

inlinestatic

Definition at line 1455 of file MemoryExtensions.cs.

    {
        string.CheckStringComparison(comparisonType);
        switch (comparisonType)
        {
        case StringComparison.Ordinal:
            return SpanHelpers.LastIndexOf(ref MemoryMarshal.GetReference(span), span.Length, ref MemoryMarshal.GetReference(value), value.Length);
        case StringComparison.CurrentCulture:
        case StringComparison.CurrentCultureIgnoreCase:
            return CultureInfo.CurrentCulture.CompareInfo.LastIndexOf(span, value, string.GetCaseCompareOfComparisonCulture(comparisonType));
        case StringComparison.InvariantCulture:
        case StringComparison.InvariantCultureIgnoreCase:
            return CompareInfo.Invariant.LastIndexOf(span, value, string.GetCaseCompareOfComparisonCulture(comparisonType));
        default:
            return Ordinal.LastIndexOfOrdinalIgnoreCase(span, value);
        }
    }

References System.comparisonType, System.Globalization.CultureInfo.CurrentCulture, System.Globalization.CompareInfo.Invariant, System.SpanHelpers.LastIndexOf(), System.Globalization.Ordinal.LastIndexOfOrdinalIgnoreCase(), and System.value.