[Haskell-cafe] Inputs to classic FRP: unsafeInterleaveIO/unsafePerformIO

[Edward Amsden]

As far as I can tell, with classic FRP implementations (those which
use behaviors as a first-class abstraction), the only way to create a
behavior or
event based on some external input (for instance keypresses or
microphone input) is to do something with unsafePerformIO or
unsafeInterleaveIO. A behavior is a value, which when evaluated at a
specific time would have to either block its evaluation until input
could be read, or check the input at that particular time.

Is there any other way of implementing external behaviors besides that?

-- 
Edward Amsden
Student
Computer Science
Rochester Institute of Technology
www.edwardamsden.com