1. IDEA
2. 后缀是.sc的文件即可
不是Ctrl + s吗
s是string,name是一个变量名,$是引用name这个字符串变量,输出Hello,和name这个变量里的东西;如果name="Tom",那他就输出Hello,Tom
保存后自动运行,自动出现结果,咱们只用写代码就可以
贴个图上来呗,包括错误信息和代码写法
不行啊,我的没反应!
为什么我用ctrl+shift+F却不行呢?
package scala.runtime final class RichInt(val self : scala.Int) extends scala.AnyVal with scala.runtime.ScalaNumberProxy[scala.Int] with scala.runtime.RangedProxy[scala.Int] { protected def num : scala.math.Numeric.IntIsIntegral.type = { /* compiled code */ } protected def ord : scala.math.Ordering.Int.type = { /* compiled code */ } override def doubleValue() : scala.Double = { /* compiled code */ } override def floatValue() : scala.Float = { /* compiled code */ } override def longValue() : scala.Long = { /* compiled code */ } override def intValue() : scala.Int = { /* compiled code */ } override def byteValue() : scala.Byte = { /* compiled code */ } override def shortValue() : scala.Short = { /* compiled code */ } def isWhole() : scala.Boolean = { /* compiled code */ } override def isValidInt : scala.Boolean = { /* compiled code */ } def isValidLong : scala.Boolean = { /* compiled code */ } override def abs : scala.Int = { /* compiled code */ } override def max(that : scala.Int) : scala.Int = { /* compiled code */ } override def min(that : scala.Int) : scala.Int = { /* compiled code */ } override def signum : scala.Int = { /* compiled code */ } @scala.deprecated("This is an integer type; there is no reason to round it. Perhaps you meant to call this on a floating-point value?") def round : scala.Int = { /* compiled code */ } def toBinaryString : scala.Predef.String = { /* compiled code */ } def toHexString : scala.Predef.String = { /* compiled code */ } def toOctalString : scala.Predef.String = { /* compiled code */ } type ResultWithoutStep = scala.collection.immutable.Range def until(end : scala.Int) : scala.collection.immutable.Range = { /* compiled code */ } def until(end : scala.Int, step : scala.Int) : scala.collection.immutable.Range = { /* compiled code */ } def to(end : scala.Int) : scala.collection.immutable.Range.Inclusive = { /* compiled code */ } def to(end : scala.Int, step : scala.Int) : scala.collection.immutable.Range.Inclusive = { /* compiled code */ } }
整数1这个对象的to方法返回一个Range