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## foreach
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### Instructions
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Écrire une fonction `ForEach` qui, pour un tableau d'`int`, applique une fonction sur chaque éléments de ce tableau.
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### Fonction attendue
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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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### Utilisation
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Voici un éventuel [programme](TODO-LINK) pour tester votre fonction :
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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.PutNbr, arr)
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}
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```
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Et son résultat :
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```console
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student@ubuntu:~/piscine/test$ go build
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student@ubuntu:~/piscine/test$ ./test
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123456
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student@ubuntu:~/piscine/test$
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```
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