Sergey Gromov wrote:
Comment out the traits and it compiles. Traits are supposed to be
compile-time. How's that possible for them to prevent compile-time
evaluation?
It's the amazing powers of the DMD CTFE engine! And it's why I don't use
d2 these days.
I think I'll dust off some old code
On Wed, Jan 21, 2009 at 8:25 AM, Trass3r wrote:
> Trass3r schrieb:
>>
>> This works:
>>
>> string foo(const string[] members)
>> {
>>string result;
>>foreach(m; members)
>>result ~= m ~ " ";
>>return result;
>> }
>>
>
> Furthermore there seems to be no way to use these member n
Trass3r schrieb:
This works:
string foo(const string[] members)
{
string result;
foreach(m; members)
result ~= m ~ " ";
return result;
}
Furthermore there seems to be no way to use these member names in a
__traits(getMember, class, m) call.
This is driving me crazy.
This works:
template classMixin()
{
static this()
{
const string[] members = __traits(allMembers, typeof(this));
pragma(msg, foo(members));
}
}
string foo(const string[] members)
{
string result;
foreach(m; members)
result ~= m ~ " ";
retur
Tue, 20 Jan 2009 21:12:18 + (UTC), BCS wrote:
> Reply to Trass3r,
>
>> Sergey Gromov schrieb:
>>
>>> auto members = __traits(allMembers, Cls);
>>
>> Seeing this really simple example crashing makes me think that this
>> has to be a bug.
>>
>
> that auto might be mucking it up (if so it wou
Reply to Trass3r,
Sergey Gromov schrieb:
auto members = __traits(allMembers, Cls);
Seeing this really simple example crashing makes me think that this
has to be a bug.
that auto might be mucking it up (if so it would be a bug).
Reply to Trass3r,
auto members = __traits(allMembers, typeof(this));
try switching that to
const[][] members = __traits(allMembers, typeof(this));
if that doesn't fix it try dropping this part (it might make it clearer what's
going on)
static if (is (typeof(__traits(getMember, this, m
Sergey Gromov schrieb:
> class Cls
{
int bar;
char[] baz;
}
string foo()
{
auto members = __traits(allMembers, Cls);
return "";
}
pragma(msg, foo());
dmd -c test.d
test.d(11): Error: cannot evaluate foo() at compile time
test.d(11): pragma msg string expected for message, not 'foo()'
BCS schrieb:
template Tpl(T...)
{
alias T Tpl;
}
template Range(int l, int u)
{
static if(l foreach(str; Range!(0,set.length-1)) // compile time foreach over the
numbers from 0 to set.length-1
pragma(msg, set[str]);
}
Still doesn't work for this code (used with a mixin):
template class
Tue, 20 Jan 2009 16:36:09 +0100, Trass3r wrote:
> Is there any way to output information at compile time other than
> pragma(msg?
> pragma is driving me crazy, the following doesn't work:
>
> auto members = __traits(allMembers, typeof(this));
> foreach(m; members)
> {
> pragma(msg, m);
> }
Reply to Trass3r,
BCS schrieb:
I don't do 2.0 but it looks to me like your mixing runtime and
compile time stuff. A foreach over an array is a runtime foreach.
Do you know how I could make it run at compile-time?
template Tpl(T...)
{
alias T Tpl;
}
template Range(int l, int u)
{
static
BCS schrieb:
I don't do 2.0 but it looks to me like your mixing runtime and compile
time stuff. A foreach over an array is a runtime foreach.
Do you know how I could make it run at compile-time?
Reply to Trass3r,
Is there any way to output information at compile time other than
pragma(msg?
pragma is driving me crazy, the following doesn't work:
auto members = __traits(allMembers, typeof(this));
foreach(m; members)
{
pragma(msg, m);
}
-> Error: string expected for message, not 'm'
Thoug
Bill Baxter schrieb:
try indexing explicitly or using ref:
foreach(i,m; members)
{
pragma(msg, members[i]);
}
foreach(ref m; members)
{
pragma(msg, m);
}
Latter one may not be useful. I can't recall.
Neither one works for me :(
Trass3r wrote:
Is there any way to output information at compile time other than
pragma(msg?
pragma is driving me crazy, the following doesn't work:
auto members = __traits(allMembers, typeof(this));
Kind of offtopic, but I tried this (with typeof(Foo) and Foo is defined
in the same module)
On Wed, Jan 21, 2009 at 12:36 AM, Trass3r wrote:
> Is there any way to output information at compile time other than
> pragma(msg?
> pragma is driving me crazy, the following doesn't work:
>
> auto members = __traits(allMembers, typeof(this));
> foreach(m; members)
> {
>pragma(msg, m);
> }
Is there any way to output information at compile time other than
pragma(msg?
pragma is driving me crazy, the following doesn't work:
auto members = __traits(allMembers, typeof(this));
foreach(m; members)
{
pragma(msg, m);
}
-> Error: string expected for message, not 'm'
Though the doc
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