On Monday, 21 December 2015 at 04:20:16 UTC, Jay Norwood wrote:
I pulled down the std.experimental.ndslice examples and am
attempting to build some of the examples and understand the
types being used.
I know don't need all these imports, but it is hard to guess
which ones are needed, and the examples often don't provide
them, which I suspect is a common gripe here.
Anyway, I was expecting to be able to use the typeof pragma to
print a type that could use as a fully specified type, and that
doesn't seem to be the case. I get a compile error instead.
DMD32 D Compiler v2.069.2 on win32, "dip80-ndslice": "~>0.8.4"
Is there some other way to get a valid fully specified type for
these sliced auto variables?
import std.stdio;
import std.experimental.ndslice;
void main() {
import std.algorithm.iteration: map;
import std.array: array;
import std.range;
import std.traits;
auto t0 = 1000.iota.sliced(3, 4, 5);
pragma(msg, typeof(t0));
Slice!(3u, Result) = 1000.iota.sliced(3, 4, 5);
Slice!(3u, Result)
src\app.d(12,2): Error: undefined identifier 'Result'
dmd failed with exit code 1.
No way that I know of. I've had this before with iota and its
various forms. I have done this in the past:
(or something similar, I haven't got my code handy ATM)
---
alias RESULT = typeof(iota(1, 2, 3));
...
Slice!(3u, RESULT) = 1000.iota.sliced(3, 4, 5);
---
Note that iota(1) and iota(1, 2, 3) return different types so you
would require two different RESULT aliases.
bye,
lobo
