46 lines
974 B
Go
46 lines
974 B
Go
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// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"fmt"
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"io/ioutil"
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"github.com/inancgumus/learngo/16-slices/exercises/24-fix-the-memory-leak/solution/api"
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)
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func main() {
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// reports the initial memory usage
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api.Report()
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// reads 65 MB of temperature data into the memory!
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temps := api.Read()
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//
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// SOLUTION #1:
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//
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// clone the last 10 elements of the returned temperatures
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// into a new slice
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need := make([]int, 10)
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copy(need, temps[len(temps)-10:])
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// make the temp slice lose reference to its backing array
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// so that it can be cleaned from the memory
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temps = need
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//
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// SOLUTION #2:
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//
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// The code below does the same thing like the code above but in one line.
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// temps = append([]int(nil), temps[len(temps)-10:]...)
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api.Report()
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fmt.Fprintln(ioutil.Discard, temps[0])
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}
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