>What is driving their authors to pursue this design? The fact that it requires an order of magnitude less code to do functionally the same thing as traditiona

>What is driving their authors to pursue this design? The fact that it requires an order of magnitude less code to do functionally the same thing as traditional toolkits. >Why aren't they choosing a declarative design? Because they aren't trying to build a native, standalone desktop application. Declarative design makes little sense for quick and dirty developer tools that just need to directly view and modify simple data structures.