[tigershark]

with F# you have a REPL, it is not only prerogative of dynamic typed languages.

[jdmichal]

You could argue that with PowerShell you have an entire .NET REPL. And I have actually used it that way, particularly when I run into some function that has bad MSDN documentation.

[dllthomas]

Haskell, too. And these days you can even, if you really want, run things before they type check.