Just an experience.
Suppose I want to replace negative values of y
with a zero:
a) (0<:y)*y
or
b) y*(0<:y)
I can replace them with one of the following:
1) b --> (*0<:]) y
2) b --> (*0&<:) y
3) a --> (0&<:*]) y
questions:
i. should I prefer no. 2 (as I do BTW),
f.e. in a way of elegance, more tacit ?
ii. 2 and 3 are hooks: dyadic 0<:y becomes monadic 0&<:y
so I have (f g) y <==> y f g y
I interpret no. 1 also as a (nested?) hook, right?
IOW (f m g h) y <==> (f G) y <==> y f G y
<==> y f (m (g h) y) <==> y f (m g h y)
<==> y f m g h y
Thanks
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