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iboss-ptk/map-id-as-key-of-each.scala

Last active January 30, 2016 10:56
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map-id-as-key-of-each.scala
// map each element to a key-value pair of id and the book object itself
val bookMap = books.map(book => (book.id, book)).toMap
bookMap(1) // => Book(1,The Pragmatic Programmer,List(Andrew Hunt, Dave Thomas),4.3)
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