Safely evaluates code (Ruby and others) by sending it through eval.in

Languages and Versions

Ruby          | MRI 1.0, MRI 1.8.7, MRI 1.9.3, MRI 2.0.0, MRI 2.1
C             | GCC 4.4.3, GCC 4.9.1
C++           | C++11 (GCC 4.9.1), GCC 4.4.3, GCC 4.9.1
CoffeeScript  | CoffeeScript 1.7.1 (Node 0.10.29)
Fortran       | F95 (GCC 4.4.3)
Haskell       | Hugs98 September 2006
Io            | Io 20131204
JavaScript    | Node 0.10.29
Lua           | Lua 5.1.5, Lua 5.2.3
OCaml         | OCaml 4.01.0
PHP           | PHP 5.5.14
Pascal        | Free Pascal 2.6.4
Perl          | Perl 5.20.0
Python        | CPython 2.7.8, CPython 3.4.1
Slash         | Slash HEAD
x86 Assembly  | NASM 2.07

Example:

It’s this simple:

result = EvalIn.call 'puts "example"', language: "ruby/mri-2.1"
result.output # returns "example\n"