tree c1aa60e02f1cfda5bb33f2227f1c3e5c6e3b72aa
parent 0f2e2f0fd4fb506c26c41ab93a8ba70eeb440b31
author zheilbron <zheilbron@gmail.com> 1377561687 -0700
committer zheilbron <zheilbron@gmail.com> 1377561687 -0700

properly check function and all of its arguments to see whether it's functional or not