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653e6856ea
This is obviously much faster for lager data sets: ```bash name old time/op new time/op delta SearchPage/ByWeight-100-4 267ns ± 4% 272ns ± 5% ~ (p=0.457 n=4+4) SearchPage/ByWeight-5000-4 10.8µs ± 3% 1.2µs ± 2% -88.99% (p=0.029 n=4+4) SearchPage/ByWeight-10000-4 21.1µs ± 1% 1.4µs ±11% -93.28% (p=0.029 n=4+4) ``` See #4500
36 lines
968 B
Go
36 lines
968 B
Go
// Copyright 2019 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package page
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// Next returns the next page reletive to the given
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func (p Pages) Next(cur Page) Page {
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x := searchPage(cur, p)
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if x <= 0 {
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return nil
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}
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return p[x-1]
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}
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// Prev returns the previous page reletive to the given
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func (p Pages) Prev(cur Page) Page {
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x := searchPage(cur, p)
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if x == -1 || len(p)-x < 2 {
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return nil
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}
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return p[x+1]
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}
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