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This article mainly explains "how to use the anonymous function of spark". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to use the anonymous function of spark.

Variable and constant scala > var a = addOne (4) a: Int = 5scala > var a = 123a: Int = 123scala > a = 124a: Int = 124scala > val b = "demo" b: String = demoscala > b = "demo2": 27: error: reassignment to val b = "demo2" ^ function scala > def addOne (m:Int): Int = {| muni1 |} addOne: (m:Int) Intscala > var a = addOne (4) a: Int = 5 anonymous function scala > (x:Int) = > x+1res0: Int = > Int = scala > var addOne = (x:Int) = > x+1addOne: Int = > Int = scala > addOne (3) res1: Int = 4 multiline anonymous function Pass in multiple parameters scala > def mult = {(x var Intjjjn) = > | var z = x * y | zhun 19 |} mult: (Int) Int) = > Intscala > mult (4Power5) res6: Int = 39 object scala > class Person {| var age: Int = 30 | | def grow (): Int = {| age = age + 1 | age | | |} |} | Defined class Person Scala > var person = new Person person: Person = $iwC$$iwC$Person@2183cb14 Scala > person.grow () res2: Int = 31 scala > person.grow () Res3: Int = 32 so far I believe you have a deeper understanding of "how to use the anonymous function of spark". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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