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## foreach
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### Instructions
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Write a function `ForEach` that, for an `int` array, applies a function on each elements of that array.
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### Expected function
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```go
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func ForEach(f func(int), arr []int) {
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}
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```
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### Usage
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Here is a possible [program](TODO-LINK) to test your function :
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```go
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package main
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import piscine ".."
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func main() {
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arr := []int{1, 2, 3, 4, 5, 6}
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piscine.ForEach(piscine.PrintNbr, arr)
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}
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```
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And its output :
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```console
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student@ubuntu:~/[[ROOT]]/test$ go build
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student@ubuntu:~/[[ROOT]]/test$ ./test
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123456
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student@ubuntu:~/[[ROOT]]/test$
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```
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