Fixing Scala error on String.format: overloaded method value format with alternatives:

怼烎@ 2021-12-11 16:19 304阅读 0赞

类型上需要一致， 统一成java 的。

  1. If you try to use a “Double” in scala, you may get errors passing it to Java:
  3. String.format("%-30s: %.2f ± %0.2f", kv._1, kv._2, kv._3)
  4. This is the error I got:
  6. [error] D:\projects\scala-indexer\src\main\scala\indexer\GpuConcepts.scala:114: overloaded method value format with alternatives:
  7. [error]   (x$1: java.util.Locale,x$2: String,x$3: Object*)String <and>
  8. [error]   (x$1: String,x$2: Object*)String
  9. [error]  cannot be applied to (String, String, Double, Double)
  10. [error]             String.format("%-30s: %.2f ▒ %0.2f", kv._1, kv._2, kv._3)
  11. The issue here is that “Double”, as in “scala.Double” is the equivalent of the primitive “double” in Java. You can fix it by boxing the value:
  13. String.format("%-30s: %.2f ± %0.2f", kv._1, Double.box(kv._2), Double.box(kv._3))

发表评论

表情：
评论列表 （有 0 条评论，304人围观）

还没有评论，来说两句吧...

相关阅读