Of course, you can use scala -cp whatever and manually manage your dependencies. But that gets quite tedious, especially if you have multiple dependencies. A more flexible approach is to use sbt to manage your dependencies. Search for the library you want to use on search.maven.org. Algebird for example is available by simply searching for … Read more
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer then you can do one of these: xcrun swift lldb –repl As of Xcode 6.1 – typing swift in the terminal launches the REPL as well.
The interesting design feature of the REPL is that your two definitions are translated to: object A { val greeting = “hi” } object B { val greeting = “bye” } A subsequent usage will import the last definition: object C { import B.greeting val message = s”$greeting, Bob.” // your code } You can … Read more
In the Python interactive prompt, if you return a string, it will be displayed with quotes around it, mainly so that you know it’s a string. If you just print the string, it will not be shown with quotes (unless the string has quotes in it). >>> 1 # just a number, so no quotes … Read more
edit Since Java 9 there’s JShell Original answer follows You can also use Groovy Console. It is an interactive console where you can do what you want. Since Groovy also includes classes from the core java platform, you’ll be able to use those classes as well. It looks like this:
There is still nothing built-in to provide the exact functionality you describe. However, an alternative to using require it to use the .load command within the REPL, like such: .load foo.js It loads the file in line by line just as if you had typed it in the REPL. Unlike require this pollutes the REPL … Read more
No, Go does not provide a REPL(read–eval–print loop). However, as already mentioned, Go Playground is very handy. The Go Authors are also thinking about adding a feature-rich editor to it. If you want something local, consider installing hsandbox. Running it simply with hsandbox go will split your terminal screen (with screen) where you can write … Read more
Global minor modes created with the define-globalized-minor-mode1 macro are a bit tricky. The reason your code doesn’t appear to do anything is that globalized modes utilise after-change-major-mode-hook to activate the buffer-local minor mode that they control; and that hook runs immediately after the major mode’s own hooks4. Individual modes may implement custom ways of specifying … Read more
If you use a let in each line, each definition will make a new function named myLast, shadowing all the previous definitions. So what you end up with is equivalent to GHCi> let myLast (x:xs) = myLast xs alone. What you probably want is to make a haskell file, say MyLast.hs, containing module MyLast where … Read more
It’s because the “printCounter()” function itself returns undefined. That’s the console telling you the result of the expression. Change “printCounter()” by adding return “Hello Anton!”; to the end 🙂 It’s a little confusing to say it “returns undefined“; really, it has no explicit return, but it’s the same effect.