From: egervari <ken.egervari@...>
Date: 2010-10-11T13:04:39+09:00
Subject: Re: Why does a lot of code not include parenthesis?

In the case of the sqrt line, those parenthesis are not required, and
you're right - they are less readable.

But take for example this line:

    y = 10.div 10.div 5

This is valid code. It produces the result "5". To me, this looks
really bad though. Believe it or not, I can infer exactly what it's
doing much easier by writing it this way:

    y = 10.div(10.div(5))

The order is very clear.

See, in Scala, you don't need the "." when you drop the parenthesis,
so dropping them both turns out to be much nicer and clearer:

    val y = 10 div (10 div 5)

To me, that actually looks very nice indeed (let's assume div is also
a method on Int in Scala). Of course, dropping all the parenthesis
would change the result to .2 (or 0 I guess).

I just think this mandatory "." without the parenthesis looks weird
and is unintuitive. I think it's better to drop both, or to have both.
The middle-of-the-road syntax that includes the "." just looks bad.

Of course, once one gets used to it, I guess it'll become readable.
Just not the most intuitive, that's all.