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Chapter 14. Pattern Matching and Case Classes > Patterns in for Expressions
14.8. Patterns in for Expressions
You can use patterns with variables in for comprehensions. For each traversed value, the variables are bound. This makes it possible to traverse a map:
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import scala.collection.JavaConversions.propertiesAsScalaMap // Converts Java Properties to a Scala map—just to get an interesting example for ((k, v) <- System.getProperties()) println(k + " -> " + v)
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