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Code Issues 95 Packages Projects Releases 10 Wiki Activity

ignore negative indexes when using ListMonitor's safeIndex API

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John Estropia
2016-06-09 17:57:15 +09:00
parent b9353238e8
commit dcf562fb26
1 changed files with 4 additions and 2 deletions
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6
Sources/Observing/ListMonitor.swift
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@@ -121,13 +121,15 @@ public final class ListMonitor<T: NSManagedObject>: Hashable {
!self.isPendingRefetch || NSThread.isMainThread(), !self.isPendingRefetch || NSThread.isMainThread(),
"Attempted to access a \(cs_typeName(self)) outside the main thread while a refetch is in progress." "Attempted to access a \(cs_typeName(self)) outside the main thread while a refetch is in progress."
) )
guard sectionIndex >= 0 && itemIndex >= 0 else {
return nil
}
guard let sections = self.fetchedResultsController.sections guard let sections = self.fetchedResultsController.sections
where sectionIndex < sections.count else { where sectionIndex < sections.count else {
return nil return nil
} }
let section = sections[sectionIndex] let section = sections[sectionIndex]
guard itemIndex < section.numberOfObjects else { guard itemIndex < section.numberOfObjects else {