過程組成和例外

Question

如何從與＃& &等組合的外部過程中捕獲異常。

scala> import scala.sys.process._  
scala> try{ "throw " ! }catch{ case e: Exception => } 
res1: AnyVal =() 
scala> try{ "throw " #&& "ls" ! }catch{ case e: Exception => } 
Exception in thread "Thread-10" java.io.IOException: Cannot run program "throw": error=2, No such file or directory 

Answer 1

你已經做了。嘗試

try { 
val x = "throw" #&& "ls" ! 
} catch { 
case x => println("caught") 
} 

的!只是記錄異常到控制檯，當你在REPL看到這是一個有點混亂，但它不會崩潰。