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29 lines
854 B
Go
29 lines
854 B
Go
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// Copyright (c) 2023 IBM Corp.
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// 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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//
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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 array
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// Prepend prepends a single value to an array
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func Prepend[ENDO ~func(AS) AS, AS ~[]A, A any](head A) ENDO {
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return func(as AS) AS {
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l := len(as)
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cpy := make(AS, l+1)
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copy(cpy[1:], as)
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cpy[0] = head
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return cpy
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}
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}
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