scala - 将变量作为多行字符串的一部分打印？

Question

val name = "Cory"
"""
  |Hi! My name is " + name + " how are you?
""".stripMargin

部分 + name +不会被解释为代码，而只是作为文本。如何在多行字符串中打印变量的值？

Answer 1

如果您使用的是 2.10 或更高版本，则可以使用字符串插值:

scala> s"""
     |   |Hi! My name is $name how are you?
     | """.stripMargin
res0: String = 
"
Hi! My name is Cory how are you?
"

对于 2.9 或更早版本，您会遇到以下问题:

scala> ("""
     |   |Hi! My name is """ + name + """ how are you?
     | """).stripMargin
res1: String = 
"
Hi! My name is Cory how are you?
"

注意这里有 several flavors of string interpolation在 Scala 中— s"..."是最简单的。