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Perf optimization on diffContentMultiple #317

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Perf optimization on diffContentMultiple #317

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0c2e03b
Perf optimization on diffContentMultiple
mathias-brandewinder Jun 21, 2023
1b12d0e
Formatting diffContentMultiple
mathias-brandewinder Jun 22, 2023
f92bd38
diffContentMultiple: replace array by mutable list
mathias-brandewinder Jun 23, 2023
ace3b23
Merge remote-tracking branch 'upstream/master' into perf-improvement-…
mathias-brandewinder Jun 24, 2023
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10 changes: 8 additions & 2 deletions src/Avalonia.FuncUI/VirtualDom/VirtualDom.Differ.fs
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Original file line number Diff line number Diff line change
Expand Up @@ -64,9 +64,15 @@ module internal rec Differ =
| None -> None

let private diffContentMultiple (lastList: IView list, nextList: IView list) : ViewDelta list =
let lastListLength = lastList.Length

let mutable lastTail: IView list = lastList

nextList |> List.mapi (fun index next ->
if index + 1 <= lastList.Length then
Differ.diff(lastList.[index], nextList.[index])
if index + 1 <= lastListLength then
let result = diff(lastTail.Head, next)
lastTail <- lastTail.Tail
result
else
ViewDelta.From next
)
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