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## listremoveif
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### Instructions
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Écrire une fonction `ListRemoveIf` qui supprime tous les éléments qui sont égaux à la `data_ref` introduite dans l'argument de la fonction.
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### Fonction et structure attendues
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```go
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type NodeL struct {
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Data interface{}
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Next *NodeL
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}
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type List struct {
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Head *NodeL
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Tail *NodeL
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}
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func ListRemoveIf(l *List, data_ref interface{}) {
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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 (
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"fmt"
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piscine ".."
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)
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func PrintList(l *piscine.List) {
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it := l.Head
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for it != nil {
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fmt.Print(it.Data, " -> ")
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it = it.Next
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}
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fmt.Print(nil, "\n")
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}
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func main() {
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link := &piscine.List{}
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link2 := &piscine.List{}
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fmt.Println("----normal state----")
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piscine.ListPushBack(link2, 1)
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PrintList(link2)
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piscine.ListRemoveIf(link2, 1)
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fmt.Println("------answer-----")
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PrintList(link2)
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fmt.Println()
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fmt.Println("----normal state----")
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piscine.ListPushBack(link, 1)
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piscine.ListPushBack(link, "Hello")
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piscine.ListPushBack(link, 1)
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piscine.ListPushBack(link, "There")
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piscine.ListPushBack(link, 1)
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piscine.ListPushBack(link, 1)
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piscine.ListPushBack(link, "How")
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piscine.ListPushBack(link, 1)
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piscine.ListPushBack(link, "are")
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piscine.ListPushBack(link, "you")
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piscine.ListPushBack(link, 1)
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PrintList(link)
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piscine.ListRemoveIf(link, 1)
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fmt.Println("------answer-----")
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PrintList(link)
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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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----normal state----
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1 -> <nil>
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------answer-----
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<nil>
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----normal state----
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1 -> Hello -> 1 -> There -> 1 -> 1 -> How -> 1 -> are -> you -> 1 -> <nil>
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------answer-----
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Hello -> There -> How -> are -> you -> <nil>
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student@ubuntu:~/piscine/test$
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```
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