55 lines
1.4 KiB
Go
55 lines
1.4 KiB
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 slice
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import "reflect"
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// AnyOf returns true if any element in the slice matches the predict func.
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func AnyOf(s interface{}, p func(int) bool) bool {
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l := reflect.ValueOf(s).Len()
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for i := 0; i < l; i++ {
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if p(i) {
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return true
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}
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}
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return false
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}
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// NoneOf returns true if no element in the slice matches the predict func.
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func NoneOf(s interface{}, p func(int) bool) bool {
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return !AnyOf(s, p)
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}
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// AllOf returns true if all elements in the slice match the predict func.
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func AllOf(s interface{}, p func(int) bool) bool {
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np := func(i int) bool {
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return !p(i)
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}
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return NoneOf(s, np)
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}
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// Copy is a deep copy of the slice.
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func Copy[T any](a []*T) []*T {
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b := make([]*T, len(a))
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for i, p := range a {
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if p == nil {
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continue
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}
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v := *p
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b[i] = &v
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}
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return b
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}
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