You solve 3 completely different problems using the exactly same code and have the gall to call this less complicated? I'm forced to sometimes wonder whether functional programmers have any idea how to create software.
If this was a joke I didn't understand, I apologise for my thickness.
That's the point, though. If the code is identical, then the problems are identical. There is less complexity through abstraction.
The idea is that you have a maybe object that is either an just an object (denoted Just(a)) or nothing at all (denoted Nothing). If you want to manually apply a function f on object m, the code would look like this
if(m is Just(a)){
f(a)
} else{
// there is nothing to do
}
apply(m,f){
if(m is Just(a)){
return Just(f(a))
} else{
return Nothing.
}
}
apply(apply(apply(m,f),g),h)
do
m <- getData
b <- f a
c <- g b
d <- h c
print d
I hope it helps =)