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Fix Stack example #3106

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Nov 18, 2024
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Fix Stack example #3106

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10 changes: 5 additions & 5 deletions _overviews/collections-2.13/concrete-mutable-collection-classes.md
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Expand Up @@ -16,7 +16,7 @@ You've now seen the most commonly used immutable collection classes that Scala p

## Array Buffers

An [ArrayBuffer](https://www.scala-lang.org/api/{{ site.scala-version }}/scala/collection/mutable/ArrayBuffer.html) buffer holds an array and a size. Most operations on an array buffer have the same speed as for an array, because the operations simply access and modify the underlying array. Additionally, array buffers can have data efficiently added to the end. Appending an item to an array buffer takes amortized constant time. Thus, array buffers are useful for efficiently building up a large collection whenever the new items are always added to the end.
An [ArrayBuffer](https://www.scala-lang.org/api/{{ site.scala-version }}/scala/collection/mutable/ArrayBuffer.html) holds an array and a size. Most operations on an array buffer have the same speed as for an array, because the operations simply access and modify the underlying array. Additionally, array buffers can have data efficiently added to the end. Appending an item to an array buffer takes amortized constant time. Thus, array buffers are useful for efficiently building up a large collection whenever the new items are always added to the end.

{% tabs ArrayBuffer_1 %}
{% tab 'Scala 2 and 3' for=ArrayBuffer_1 %}
Expand Down Expand Up @@ -148,11 +148,11 @@ res1: scala.collection.mutable.Stack[Int] = Stack(1)
scala> stack.push(2)
res0: stack.type = Stack(1, 2)
scala> stack
res3: scala.collection.mutable.Stack[Int] = Stack(1, 2)
res3: scala.collection.mutable.Stack[Int] = Stack(2, 1)
scala> stack.top
res8: Int = 2
scala> stack
res9: scala.collection.mutable.Stack[Int] = Stack(1, 2)
res9: scala.collection.mutable.Stack[Int] = Stack(2, 1)
scala> stack.pop
res10: Int = 2
scala> stack
Expand All @@ -170,11 +170,11 @@ res1: scala.collection.mutable.Stack[Int] = Stack(1)
scala> stack.push(2)
res0: stack.type = Stack(1, 2)
scala> stack
res3: scala.collection.mutable.Stack[Int] = Stack(1, 2)
res3: scala.collection.mutable.Stack[Int] = Stack(2, 1)
scala> stack.top
res8: Int = 2
scala> stack
res9: scala.collection.mutable.Stack[Int] = Stack(1, 2)
res9: scala.collection.mutable.Stack[Int] = Stack(2, 1)
scala> stack.pop
res10: Int = 2
scala> stack
Expand Down
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