Crosscut

Function application is quite verbose right now. At some point, I'd like to have a more concise syntax that is both easier to read and to write. Maybe something like this:

function:
    argument

The : would tell the compiler that you want to apply function to argument. If you wrote function without the : after it, you would be referring to the function as a value, maybe to pass it to another function:

higher_order_function:
    function

I like this so far. It's clean and simple. And it meshes well with restricted structural editing: If you type :, the compiler knows to create a placeholder node for the argument, which you can then edit.