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<Int> == <String>

原文 2016-05-02 20:15:58 1 1 scala/ types

为什么即使未在API中为字符串定义此运算符，我也可以将==的Scala中的Int和字符串与==进行比较，例如1=="2" （ http://www.scala-lang.org/api /2.11.8/index.html#scala.Int ）？

1 answers

Because it's defined in Any : def ==(arg0: Any): Boolean

Test two objects for equality. The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

generalize Int -> Int, Int-> String, String -> String, String -> Int

Convert a String to Map(String, List([Int,Int]))

Flatten RDD[(String,Map[String,Int])] to RDD[String,String,Int]

String to Int in Scala

Parsing a String to Boolean or Int

What is JavaRDD[(Int, String)]?

Scala not converting Int to String

Cast Any of String to Int

What is List[String~Int]?

List[Int] => Int without String Conversion?

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Related Question generalize Int -> Int, Int-> String, String -> String, String -> Int Convert a String to Map(String, List([Int,Int])) Flatten RDD[(String,Map[String,Int])] to RDD[String,String,Int] String to Int in Scala Parsing a String to Boolean or Int What is JavaRDD[(Int, String)]? Scala not converting Int to String Cast Any of String to Int What is List[String~Int]? List[Int] => Int without String Conversion?

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<Int> == <String>

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1 answers

solution1 3 ACCPTED 2016-05-02 20:22:40

solution1
3 ACCPTED 2016-05-02 20:22:40