On Monday, 30 May 2016 at 19:06:53 UTC, ArturG wrote:
does this count?
struct Foo
{
int x;
float f;
}
void main()
{
Foo foo;
if(foo is typeof(foo).init) "A: does'nt work".writeln;
foo = Foo();
if(foo is typeof(foo).init) "B: works".writeln;
}
This one is a bug in DMD.
On Friday, 27 May 2016 at 15:49:16 UTC, ArturG wrote:
On Friday, 27 May 2016 at 15:24:18 UTC, Adam D. Ruppe wrote:
On Friday, 27 May 2016 at 15:19:50 UTC, ArturG wrote:
yes but i have to check for that when some one does
Why? This is no different than if they set any of the other
four
On Friday, 27 May 2016 at 14:48:59 UTC, Adam D. Ruppe wrote:
On Friday, 27 May 2016 at 14:43:47 UTC, ArturG wrote:
if(value is typeof(value).init) ...
that still requiers a special case for floating points, arrays
and optionally empty string literals.
Have you tried? That should work
On Friday, 27 May 2016 at 18:03:23 UTC, Steven Schveighoffer
wrote:
I didn't change the default. The default is to pick the first
member and use that as the init value. I may not have even
considered what foo.init might be when I was creating my enum.
-Steve
by default i ment this
enum
On 5/27/16 1:42 PM, ArturG wrote:
On Friday, 27 May 2016 at 16:56:21 UTC, Steven Schveighoffer wrote:
Why are you expecting it to be?
Won't work for enums with first elements that are non-zero either:
enum foo : int {
bar = 1;
}
foo f;
if(f) writeln("this will output too");
but by
On Friday, 27 May 2016 at 16:56:21 UTC, Steven Schveighoffer
wrote:
Why are you expecting it to be?
Won't work for enums with first elements that are non-zero
either:
enum foo : int {
bar = 1;
}
foo f;
if(f) writeln("this will output too");
-Steve
but by default it works you just
On 5/27/16 11:49 AM, ArturG wrote:
On Friday, 27 May 2016 at 15:24:18 UTC, Adam D. Ruppe wrote:
On Friday, 27 May 2016 at 15:19:50 UTC, ArturG wrote:
yes but i have to check for that when some one does
Why? This is no different than if they set any of the other four
billion possible values.
On Friday, 27 May 2016 at 15:24:18 UTC, Adam D. Ruppe wrote:
On Friday, 27 May 2016 at 15:19:50 UTC, ArturG wrote:
yes but i have to check for that when some one does
Why? This is no different than if they set any of the other
four billion possible values.
What do you mean?
operation on
On Friday, 27 May 2016 at 15:19:50 UTC, ArturG wrote:
yes but i have to check for that when some one does
Why? This is no different than if they set any of the other four
billion possible values.
On Friday, 27 May 2016 at 15:07:50 UTC, Adam D. Ruppe wrote:
On Friday, 27 May 2016 at 14:56:28 UTC, ArturG wrote:
float f;
if(f is float.init) "float init".writeln;
f = float.nan;
if(f is float.init) "float nan".writeln;
You changed it to a value that isn't float.init, so of
On Friday, 27 May 2016 at 14:56:28 UTC, ArturG wrote:
float f;
if(f is float.init) "float init".writeln;
f = float.nan;
if(f is float.init) "float nan".writeln;
You changed it to a value that isn't float.init, so of course it
isn't going to match!
float.nan and float.init are
On Friday, 27 May 2016 at 14:48:59 UTC, Adam D. Ruppe wrote:
On Friday, 27 May 2016 at 14:43:47 UTC, ArturG wrote:
if(value is typeof(value).init) ...
that still requiers a special case for floating points, arrays
and optionally empty string literals.
Have you tried? That should work
On Friday, 27 May 2016 at 14:43:47 UTC, ArturG wrote:
if(value is typeof(value).init) ...
that still requiers a special case for floating points, arrays
and optionally empty string literals.
Have you tried? That should work in all cases.
On Friday, 27 May 2016 at 09:25:55 UTC, Marc Schütz wrote:
On Thursday, 26 May 2016 at 16:45:22 UTC, ArturG wrote:
im just playing with this template[1] is there anything else i
missed? (if you dont mind)
it basically treats any T.init as false and skips the
function/delegate and just returns
On Thursday, 26 May 2016 at 16:45:22 UTC, ArturG wrote:
im just playing with this template[1] is there anything else i
missed? (if you dont mind)
it basically treats any T.init as false and skips the
function/delegate and just returns type.
[1] https://dpaste.dzfl.pl/d159d83e3167
If you
On Thursday, 26 May 2016 at 15:51:39 UTC, Basile B. wrote:
Oh, I'm so sorry ! I totally missed the point of the Q.
float.nan is not a "unique" value. Several values verify "nan"
(Look at std.math.isNan). So I suppose it's simpler to test
for nullity. Though with the sign there's also two
On Thursday, 26 May 2016 at 15:48:18 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 15:34:50 UTC, ArturG wrote:
On Thursday, 26 May 2016 at 15:29:52 UTC, Basile B. wrote:
float.init is not equal to 0.0f. In D FP points values are
initialized to nan (not a number).
By the way for
On Thursday, 26 May 2016 at 15:34:50 UTC, ArturG wrote:
On Thursday, 26 May 2016 at 15:29:52 UTC, Basile B. wrote:
float.init is not equal to 0.0f. In D FP points values are
initialized to nan (not a number).
By the way for strings it works, it's like the array case I
described in the
On Thursday, 26 May 2016 at 15:38:55 UTC, Basile B. wrote:
because nan is not 0 and that the shortcut for float is
if (fpValue) <=> if (fpValue != 0)
if (!fpValue)<=> if (fpValue == 0)
There's no relation between the initializer and the shortcut.
It's not because for some values the
On 05/26/2016 05:28 PM, ArturG wrote:
On Thursday, 26 May 2016 at 15:25:26 UTC, ag0aep6g wrote:
[...]
What does it matter?
You would have to create special cases for them.
When? If you want to check if something is the .init value, compare
against .init.
On Thursday, 26 May 2016 at 15:34:50 UTC, ArturG wrote:
On Thursday, 26 May 2016 at 15:29:52 UTC, Basile B. wrote:
float.init is not equal to 0.0f. In D FP points values are
initialized to nan (not a number).
By the way for strings it works, it's like the array case I
described in the
On Thursday, 26 May 2016 at 15:29:52 UTC, Basile B. wrote:
float.init is not equal to 0.0f. In D FP points values are
initialized to nan (not a number).
By the way for strings it works, it's like the array case I
described in the first answer).
yes i guess i tested all/most types and
On Thursday, 26 May 2016 at 15:25:03 UTC, arturg wrote:
On Thursday, 26 May 2016 at 15:15:57 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 15:14:21 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 15:11:50 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 14:03:16 UTC, ArturG wrote:
On Thursday, 26 May 2016 at 15:25:26 UTC, ag0aep6g wrote:
On 05/26/2016 04:03 PM, ArturG wrote:
for example:
if(any floatingpoint.init) will be true
if(any char.init) also true
if("") also true
while others are false e.g.
string s;
if(s) will be false
all others are also false or did i miss
On 05/26/2016 04:03 PM, ArturG wrote:
for example:
if(any floatingpoint.init) will be true
if(any char.init) also true
if("") also true
while others are false e.g.
string s;
if(s) will be false
all others are also false or did i miss any?
What does it matter?
On Thursday, 26 May 2016 at 15:15:57 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 15:14:21 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 15:11:50 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 14:03:16 UTC, ArturG wrote:
[...]
[...]
- integral(*): if (i) <=> if (i > 0)
I
On Thursday, 26 May 2016 at 15:14:21 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 15:11:50 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 14:03:16 UTC, ArturG wrote:
[...]
[...]
- integral(*): if (i) <=> if (i > 0)
I obviously meant:
- integral(*): if (i) <=> if (i <> 0)
and
On Thursday, 26 May 2016 at 15:11:50 UTC, Basile B. wrote:
On Thursday, 26 May 2016 at 14:03:16 UTC, ArturG wrote:
[...]
[...]
- integral(*): if (i) <=> if (i > 0)
I obviously meant:
- integral(*): if (i) <=> if (i <> 0)
and "<=>" stands for "equivalence"
On Thursday, 26 May 2016 at 14:03:16 UTC, ArturG wrote:
for example:
if(any floatingpoint.init) will be true
if(any char.init) also true
if("") also true
while others are false e.g.
string s;
if(s) will be false
all others are also false or did i miss any?
It's a shortcut that works for
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