perf: walk s.Nodes directly in HasNodes#558
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HasNodes routed through FilterFunction -> winnowFunction -> grep, which allocated a single-node Selection and a closure capture per source element, just to call sel.Contains(n) which is itself a one-iteration sliceContains over the wrapped node. This commit inlines a direct double loop over s.Nodes x nodes calling nodeContains, and push the result via pushStack. name old allocs/op new allocs/op delta Has-8 55.00 ± 0% 24.00 ± 0% -56.36% (p=0.000) HasNodes-8 752.00 ± 0% 4.00 ± 0% -99.47% (p=0.000) HasSelection-8 752.00 ± 0% 3.00 ± 0% -99.60% (p=0.000)
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HasNodes routed through FilterFunction -> winnowFunction -> grep, which allocated a single-node Selection and a closure capture per source element, just to call sel.Contains(n) which is itself a one-iteration sliceContains over the wrapped node. This commit inlines a direct double loop over s.Nodes x nodes calling nodeContains, and push the result via pushStack.
name old allocs/op new allocs/op delta
Has-8 55.00 ± 0% 24.00 ± 0% -56.36% (p=0.000)
HasNodes-8 752.00 ± 0% 4.00 ± 0% -99.47% (p=0.000)
HasSelection-8 752.00 ± 0% 3.00 ± 0% -99.60% (p=0.000)