Refer to page that was renamed in 2c6f8fa

Author: Philippus

tutorials/tour/_posts/2017-02-13-extractor-objects.md

@@ -7,7 +7,7 @@ discourse: true
 tutorial: scala-tour
 categories: tour
 num: 16
-next-page: sequence-comprehensions
+next-page: for-comprehensions
 previous-page: regular-expression-patterns
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tutorials/tour/_posts/2017-02-13-generic-classes.md

@@ -8,7 +8,7 @@ tutorial: scala-tour
 categories: tour
 num: 18
 next-page: variances
-previous-page: sequence-comprehensions
+previous-page: for-comprehensions
 assumed-knowledge: classes unified-types
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 Generic classes are classes which take a type as a parameter. They are particularly useful for collection classes.