48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
// Copyright (c) 2014-2016, b3log.org & hacpai.com
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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 util
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import (
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"math/rand"
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"time"
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)
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type myrand struct{}
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// Random utilities.
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var Rand = myrand{}
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// String returns a random string ['a', 'z'] in the specified length
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func (*myrand) String(length int) string {
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bytes := make([]byte, length)
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for i := 0; i < length; i++ {
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bytes[i] = byte(Rand.Int('a', 'z'))
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time.Sleep(100 * time.Nanosecond)
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}
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return string(bytes)
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}
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// Int returns a random integer in range [min, max].
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func (*myrand) Int(min int, max int) int {
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rand.Seed(time.Now().UnixNano())
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time.Sleep(100 * time.Nanosecond)
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return min + rand.Intn(max-min)
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}
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