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Small note to describe Nil #1474

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Merged
merged 3 commits into from
Sep 17, 2019
Merged

Small note to describe Nil #1474

merged 3 commits into from
Sep 17, 2019

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manishpatelUK
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This is the first time the user comes across Nil in the tutorial, so a small explanation of what it is.

This is the first time the user comes across Nil in the tutorial, so a small explanation of what it is.
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@@ -31,6 +31,8 @@ class Stack[A] {
```
This implementation of a `Stack` class takes any type `A` as a parameter. This means the underlying list, `var elements: List[A] = Nil`, can only store elements of type `A`. The procedure `def push` only accepts objects of type `A` (note: `elements = x :: elements` reassigns `elements` to a new list created by prepending `x` to the current `elements`).

`Nil` here is an empty `List` and is not to be confused with `Null`.
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`Nil` here is an empty `List` and is not to be confused with `Null`.
`Nil` here is an empty `List` and is not to be confused with `null`.

@SethTisue
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@manishpatelUK I think we can merge this after the one further small change requested by @Philippus

exoego pushed a commit to exoego/docs.scala-lang that referenced this pull request Aug 27, 2019
@SethTisue SethTisue merged commit 661af04 into scala:master Sep 17, 2019
SethTisue added a commit that referenced this pull request Sep 17, 2019
@SethTisue
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final fixup in bae0556

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4 participants