I really like the distinction Crystal makes here, which is that values on the stack is usually inferred, whereas values on the heap is a lot more explicit (thou

I really like the distinction Crystal makes here, which is that values on the stack is usually inferred, whereas values on the heap is a lot more explicit (though inference can be applied to some level there too, in initializers). It makes it nice to work with while at the same time encouraging reasonable amounts of thinking about memory layout.