Платформа ЦРНП "Мирокод" для разработки проектов
https://git.mirocod.ru
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29 lines
913 B
29 lines
913 B
// Copyright 2015 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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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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package kv |
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import "github.com/juju/errors" |
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// NextUntil applies FnKeyCmp to each entry of the iterator until meets some condition. |
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// It will stop when fn returns true, or iterator is invalid or an error occurs. |
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func NextUntil(it Iterator, fn FnKeyCmp) error { |
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var err error |
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for it.Valid() && !fn(it.Key()) { |
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err = it.Next() |
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if err != nil { |
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return errors.Trace(err) |
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} |
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} |
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return nil |
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}
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