I left my program open for 9 hours and it used up 700mb of ram, could someone review it?

[bearophile via Digitalmars-d-learn]

Gan:

> How can I make it use less CPU/RAM?

Most tiny classes probably should be structs. More generally, use 
a struct every time you don't need a class.

You can start with those two:

struct SBRange {
     double left = 0.0, right = 0.0, top = 0.0, bottom = 0.0;
}

struct Point(T) {
     T x, y;
}

This probably isn't enough to solve your problems, but it's a 
start.

Bye,
bearophile