Author ozenero Posted on JanuCategories Kotlin Tags kotlin map, kotlin map methods, kotlin mapKeys, kotlin mapKeysTo, kotlin mapNotNull, kotlin mapNotNullTo, kotlin mapTo, kotlin mapValues, kotlin mapValuesTo, kotlin transform map, kotlin tutorial 275 Comments on Kotlin Map collection - map() methods val simpleMap = hashMapOf ( 'foo' to 1, 'bar' to 2 ) val pairKeyValueList = simpleMap.toList () println (pairKeyValueList) // Use public Collection values () to return a view of the values. Use public fun Map.toList (): List> to returns a containing all key-value pairs. The total amount of lines of code we needed for the whole phase was slightly above 300 lines, including both the ANTLR grammar and the Kotlin code. At the end of this phase, we went from the code to a representation of the information in our AST classes. In the following example, we'll construct a. It returns a map containing key-value pairs provided by the transform function applied to the given list elements.

The standard way to convert a list to a map is with the associate () function. This article explores different ways to convert a list to a map in Kotlin. As of Kotlin 1.1, we can use the toMap () extension function to copy all the entries of a Map to another one: val bookInfo = mapOf ( 'name' to '1984', 'author' to 'Orwell' ) val copied = bookInfo.toMap () assertThat (copied).isNotSameAs (bookInfo) assertThat (copied).containsAllEntriesOf (bookInfo) Of course, after the copy is. var bzkMap: HashMap = hashMapOf(0 to 'zero', 1 to 'one', 2 to. It will return a new List with elements transformed from entries in original Map. We can easily transform a Kotlin Map to List using map() method. The examples show you how to iterate over a Kotlin HashMap using: forEach() method.

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