[reactive] First steps in FRP

[Álvaro García Pérez]

Hello,

I'm new to FRP and I'm trying to write a simple program adapting the events
to IO. I've read the tutorial "Introducing Reactive: Events" but it's not
very clear how to do it. Can someone send me an example? I would like to
capture events from IO (let's say, keyboard strokes) and print text in the
console. I'm using the last version of the reactive package.

Thanks,

Alvaro.
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