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## basicjoin
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### Instructions
Write a function that returns the concatenation of all the `string` of a slice of `string` passed in argument.
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### Expected function
```go
func BasicJoin(elems []string) string {
}
```
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### Usage
Here is a possible program to test your function :
```go
package main
import (
"fmt"
"piscine"
)
func main() {
elems := []string{"Hello!", " How", " are", " you?"}
fmt.Println(piscine.BasicJoin(elems))
}
```
And its output :
```console
$ go run .
Hello! How are you?
$
```
### Notions
- [string concatenation](https://golang.org/ref/spec#Arithmetic_operators)