28 lines
886 B
Go
28 lines
886 B
Go
// Copyright 2021 PingCAP, Inc.
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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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//
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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 filter
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import "reflect"
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// reverse replace the contents of a slice with the same elements but in reverse order.
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func reverse(items interface{}) {
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n := reflect.ValueOf(items).Len()
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swap := reflect.Swapper(items)
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for i := n/2 - 1; i >= 0; i-- {
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opp := n - 1 - i
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swap(i, opp)
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}
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}
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