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added ``` for a code snippet #1946

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Mar 8, 2021
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added ``` for a code snippet #1946

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2 changes: 2 additions & 0 deletions _overviews/scala3-book/collections-methods.md
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Expand Up @@ -280,9 +280,11 @@ val x :: xs = names

Putting that code in the REPL shows that `x` is assigned to the head of the list, and `xs` is assigned to the tail:

```scala
scala> val x :: xs = names
val x: String = adam
val xs: List[String] = List(brandy, chris, david)
```

Pattern matching like this is useful in many situations, such as writing a `sum` method using recursion:

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