Three Unlikely Successful Features of D

[bearophile]

Matt Peterson:

> It isn't mainline yet, but UFCS from git has made working with 
> std.algorithm much nicer. Instead of something like 
> array(filter!"a > 0"(map!((a){return somefunc(a);})(data))) 
> where you can quickly drown in parenthesis and the order seems 
> somewhat backwards, you can use data.map!((a){return 
> somefunc(a);}).filter!"a > 0".array

I suggest to compile all your D2 code with -wi (or -w) and 
-property.

And one bug of UFCS will be probably fixed by Hara 
(http://d.puremagic.com/issues/show_bug.cgi?id=7722 ), so map and 
filter will require an ending () (I have closed my 
http://d.puremagic.com/issues/show_bug.cgi?id=7723 ).

So your last line is better written like this:

data.map!somefunc().filter!q{a > 0}().array()

This is indeed a significant improvement in D syntax for 
functional-style code, because this reduced nesting a lot, making 
such code significantly more readable.

Bye,
bearophile