showのほうは2.11.0から(?)あって、printは2.11.8から Neat trick I just discovered: add `// show` in the Scala REPL to see the actual code that gets compiled. 2016-03-30 23:19:15 via Twitter for Mac @jaguarul starting 2.11.8, add `// print` and hit tab, it will show the de-sugared version of your code (without the REPL's wrappers) 2016-03-31 00:38:16 via Twitter Web Client to @jaguarul scala -Xprint:typer などとすれば、