Hi,
I'm attempting a more minimalistic array vector design and just thought I'd
float a partial API to see what you think. The below methods are both
'mapToSelf' by default. If the user wants a new vector, she should first clone
the vector and then call the map method (vector.clone().map(...)).
public void map(BiFunction<Double, Double, Double> function, Vector v) {
Arrays.setAll(data, i -> function.apply(data[i], v.getEntry(i)));
}
public void parallelMap(BiFunction<Double, Double, Double> function, Vector
v) {
Arrays.parallelSetAll(data, i -> function.apply(data[i],
v.getEntry(i)));
}
The above two functions (Left the dimension check out) allow you to "Plug in" a
lambda function to perform the mapping. For example if you want to perform addition, you
would use the addition BiFunction like this:
public static BiFunction<Double, Double, Double> add = (x, y) -> {
return x
+ y;
};
RUNTIME:
vector2.map(add, vector1);
Then the same for subtraction, multiplication, etc. I'm thinking the static
BiFunction instances can go in the Arithmetic module. That way the map methods
can use both checked and unchecked arithmetic operations. I hoping that this
will also make the FieldVector and RealVector implementations more efficient
from a code sharing viewpoint and symmetric from an API perspective.
Thoughts?
Cheers,
Ole
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