On Tuesday, 10 February 2015 at 01:31:54 UTC, FG wrote:
On 2015-02-10 at 01:41, bearophile wrote:
auto query = iota(2, 12)
.map!(c => Tuple!(int,"length", int,"height",
int,"hypotenuse")
(2 * c, c ^^ 2 - 1, c ^^ 2 +
1))
.map!(x => "%3d%4d%4d".format(x.height,
x.hypotenuse, x.length));
I took advantage of the fact that all elements were of the same
type:
auto query = iota(2, 2 + 10)
.map!(c => ["Length": 2 * c, "Height": c * c - 1,
"Hypotenuse": c * c + 1])
.map!(x => format("%4d%4d%4d", x["Height"],
x["Hypotenuse"], x["Length"]));
...
and was surprised that it worked straight away. :)
But definitely this looks better and less complicated:
auto query = iota(2, 12)
.map!(c => tuple(c ^^ 2 - 1, c ^^ 2 + 1, 2 * c));
foreach (x; query)
writefln("%4d%4d%4d", x[]);
It's the foreach version, since `each` isn't officially out yet.
Thank you.
