On Thursday, 19 July 2012 at 14:21:47 UTC, Petr Janda wrote:
Hi,
I'm an occasional lurker on the D forums just to see where the
language is going,but I'm a little puzzled. In another thread I
found this code
auto r = [5, 3, 5, 6, 8].sort.uniq.map!(x => x.to!string);
I don't understand whats going on here. Int array is getting
sorted, then Uniqued, then what? What type is x? What kind of
operator is =>, why is x.to!string allowed template
specialization should say x.to!(string), which leads me to
think that there are multiple syntaxes for things(why I hate
dynamic languages, love compiled)
On another note, (copied from wikipedia)
foreach(item; set) {
// do something to item
}
what's with the lax syntax being allowed? Shouldn't it be at
least specified "auto item"?
I'm sorry I don't mean to be a criticizer, but it seems to me
that D is trying to be a dynamic-like compiled language way too
hard.
(arguments) => result-expression is a lambda expression; sort of
shorthand for (arguments) { return result-expression; } anonymous
function. x.to!string thingy is the new UFCS stuff which
basically allows you to transform any foo(x, y, z) to x.foo(y, z)
(so instead of calling a(b(c(d(e(f))))) you can just call
a.b.c.d.e.f())
dynamic languages are awesome, they have their pros and cons, for
some things they're way better than static languages but for
other things static will fit better.
