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// Copyright 2018, the Blazer authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package window_test
import (
"fmt"
"time"
"github.com/kurin/blazer/x/window"
)
type Counter struct {
w *window.Window
}
func (c Counter) Add() {
c.w.Insert(1)
}
func (c Counter) Count() int {
v := c.w.Reduce()
return v.(int)
}
func New(size time.Duration) Counter {
r := func(i, j interface{}) interface{} {
a, ok := i.(int)
if !ok {
a = 0
}
b, ok := j.(int)
if !ok {
b = 0
}
return a + b
}
return Counter{w: window.New(size, time.Second, r)}
}
func Example_counter() {
c := New(time.Minute)
c.Add()
c.Add()
c.Add()
fmt.Printf("total: %d\n", c.Count())
// Output:
// total: 3
}
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