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refactor: slices 24th exercise

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Inanc Gumus
2019-08-18 13:29:12 +03:00
parent dfca449457
commit df18e1a4bd
4 changed files with 81 additions and 29 deletions
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29
16-slices/exercises/24-fix-the-memory-leak/solution/main.go
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@ -21,25 +21,36 @@ func main() {
// reads 65 MB of temperature data into the memory!
temps := api.Read()
//
// ------------------------------------------------------
// SOLUTION #1:
//
// ------------------------------------------------------
// clone the last 10 elements of the returned temperatures
// into a new slice
//
// Copy the last 10 elements of the returned temperatures
// to a new slice.
//
// This will create a new backing array.
//
need := make([]int, 10)
copy(need, temps[len(temps)-10:])
// make the temp slice lose reference to its backing array
// so that it can be cleaned from the memory
//
// Make the temp slice lose reference to its backing array
// so that its backing array can be cleaned from the memory.
//
temps = need
//
// ------------------------------------------------------
// SOLUTION #2:
//
// ------------------------------------------------------
// Similar to the 1st solution. It does the same thing.
// But this code is more concise. Use this one.
// The code below does the same thing like the code above but in one line.
// temps = append([]int(nil), temps[len(temps)-10:]...)
// ------------------------------------------------------
// don't worry about this code yet.
api.Report()
fmt.Fprintln(ioutil.Discard, temps[0])
}