• bearophile (8/8) Jan 21 2015 Currently this is accepted:
• Baz (10/18) Jan 21 2015 This is because of the .sizeof property, for example:
• Baz (2/24) Jan 21 2015 with -m32 of course.
• bearophile (5/8) Jan 21 2015 The sizeof values aren't relevant for D array casts. What matters
• bearophile (9/11) Jan 21 2015 See:
• Douglas Peterson (3/14) Jan 21 2015 i'm sorry if I've lead you on a wrong way.

"bearophile" <bearophileHUGS lycos.com> writes:

Currently this is accepted:

int[2] m = cast(int[2])[1, 2];

But Kenji suggests that the cast from int[] to int[2][1] should 
not be accepted. Do you know why?

Reference:
https://issues.dlang.org/show_bug.cgi?id=7514

Bye and thank you,
bearophile

"Baz" <bb.temp gmx.com> writes:

On Wednesday, 21 January 2015 at 14:31:15 UTC, bearophile wrote:
 Currently this is accepted:

 int[2] m = cast(int[2])[1, 2];

 But Kenji suggests that the cast from int[] to int[2][1] should 
 not be accepted. Do you know why?

 Reference:
 https://issues.dlang.org/show_bug.cgi?id=7514

 Bye and thank you,
 bearophile

This is because of the .sizeof property, for example:

void main(string[] args)
{
     int[3] m = cast(int[3])[1, 2, 3];
     writeln(m.sizeof);
     writeln([1, 2, 3].sizeof);
}

outputs 12 / 8

Your previous example is corner case, it's 8/8 in both.

"Baz" <bb.temp gmx.com> writes:

On Wednesday, 21 January 2015 at 14:41:48 UTC, Baz wrote:
 On Wednesday, 21 January 2015 at 14:31:15 UTC, bearophile wrote:
 Currently this is accepted:

 int[2] m = cast(int[2])[1, 2];

 But Kenji suggests that the cast from int[] to int[2][1] 
 should not be accepted. Do you know why?

 Reference:
 https://issues.dlang.org/show_bug.cgi?id=7514

 Bye and thank you,
 bearophile

 This is because of the .sizeof property, for example:

 void main(string[] args)
 {
     int[3] m = cast(int[3])[1, 2, 3];
     writeln(m.sizeof);
     writeln([1, 2, 3].sizeof);
 }

 outputs 12 / 8

 Your previous example is corner case, it's 8/8 in both.

with -m32 of course.

"bearophile" <bearophileHUGS lycos.com> writes:

Baz:

     int[3] m = cast(int[3])[1, 2, 3];
     writeln(m.sizeof);
     writeln([1, 2, 3].sizeof);

The sizeof values aren't relevant for D array casts. What matters 
are the array "contents".

Bye,
bearophile

"bearophile" <bearophileHUGS lycos.com> writes:

 The sizeof values aren't relevant for D array casts. What 
 matters are the array "contents".

See:

void main() {
     int[5] m = cast(int[5])[1, 2, 3, 4, 5];
     assert(m == [1, 2, 3, 4, 5]);
     pragma(msg, m.sizeof); // 20u
     pragma(msg, [1, 2, 3, 4, 5].sizeof); // 8u
}


Bye,
bearophile

"Douglas Peterson" <basile.burg gmx.com> writes:

On Wednesday, 21 January 2015 at 18:08:44 UTC, bearophile wrote:
 The sizeof values aren't relevant for D array casts. What 
 matters are the array "contents".

 See:

 void main() {
     int[5] m = cast(int[5])[1, 2, 3, 4, 5];
     assert(m == [1, 2, 3, 4, 5]);
     pragma(msg, m.sizeof); // 20u
     pragma(msg, [1, 2, 3, 4, 5].sizeof); // 8u
 }


 Bye,
 bearophile

i'm sorry if I've lead you on a wrong way.
My bad.