Re: A small question default values in tmplate-functions
import std.stdio;
import core.vararg;
auto veryStableAPI(bool brave = false)(string parameter, ...)
{
static if (!brave)
{
pragma(msg, I'm not brave);
}
else
{
pragma(msg, I'm very brave);
}
}
void main(string[] args)
{
veryStableAPI(test);
veryStableAPI!(true)(test);
}
Sorry but that does not anwer my question.
is it legal or is it not ?
A small question default values in tmplate-functions
Hello,
Suppose I have the following function
auto veryStableAPI(string parameter,VaraiadicParams...)() {
// do something very slow and stable;
}
auto experimentalReplacement(string parameter,VaraidcParams
...)() {
// do the same thing very fast and dangerous
}
is the following
auto veryStableAPI(bool brave=false, string
parameter,VaraiadicParams...) {
static if (!brave)
// do something very slow and stable;
else
// do the same thing very fast and dangerous
}
valid according to spec ?
Re: dmd compile large project
try dub :D
Re: can't I use __traits(allMembers) recursivly ?
Orange is neat I had a look at but, the docs are abit lacking ... I don't really know how to get it to do what i want Well I have an Enum in a Struct and I need to serialze the struct members and unfold the enum. can orange do that ?
Re: can't I use __traits(allMembers) recursivly ?
I have solved by problem. I just forgot to prepend static to the ifs I used :D
getting Key:Value pairs of an enum at compile time ?
Hello,
I have an Enum to represent possible Options for a selectList
e.g
enum options {
blueish=Blue,
redish =Red
}
and I want the List-Entrys to say
blueish or redish.
the value send to the app should be
Blue or Red.
I can use __traits(allMembers,Enum)
for the identifiers, but how do I get the Values ?
Re: getting Key:Value pairs of an enum at compile time ?
Try getMember: http://dlang.org/traits.html#getMember if i try it, I get __aggr2297 cannot be read at compile time
Re: getting Key:Value pairs of an enum at compile time ?
void main() {
foreach(m; EnumMembers!Options) {
writeln(m, , cast(string)m);
}
}
Still not there at compile-time
... because I need to index my members
Re: getting Key:Value pairs of an enum at compile time ?
Could you show an exact code that fails?
sure!
auto EnumToSelect(Enum)(string Name = __traits(identifier,Enum))
if (is(Enum==enum)) {
foreach (i,Item;[__traits(allMembers,Enum)]) {
else
form_string ~= \toption(value='~Item~')
~__traits(getMember,Enum,Item)~\n;
}
debug import std.stdio;
debug writeln(form_string);
return form_string;
}
Re: getting Key:Value pairs of an enum at compile time ?
Oh my bad
wasn't too carefull with deletion
auto EnumToSelect(Enum)(string Name = __traits(identifier,Enum))
if (is(Enum==enum)) {
foreach (i,Item;[__traits(allMembers,Enum)]) {
reslt ~= \toption(value='~__traits(getMember,Enum,Item)~')
~Item~\n;
}
debug import std.stdio;
debug writeln(form_string);
return reslt;
}
can't I use __traits(allMembers) recursivly ?
When I try to
struct _pod_ {
string s1;
enum e1 { v1,v2 };
}
auto printPod(Pod)() if (__traits(isPOD,Pod)) {
string result;
foreach (member;__traits(allMembers,Pod) ) {
auto _member=__traits(getMember,Pod,member);
}
writeln(result);
}
void main() {printPod!(_pod_);}
I get
Error: need 'this' for 's1' of type 'string'
Error: type e1 has no value
Re: can't I use __traits(allMembers) recursivly ?
I'm trying to serialize my struct through CT-Refelction
problems with mixins and non-ascii characters
Hi,
When I try to define an Enum with an umlaut like ä
enum test2 {
l,
ä
}
I get Error: basic type expected, not \u00e4
and Error: type only allowed if anonymous enum and no enum
type
is there any workaround for this ?
Re: problems with mixins and non-ascii characters
On Wednesday, 22 January 2014 at 10:46:30 UTC, bearophile wrote: Uplink_Coder: is there any workaround for this ? For me this is a feature, not a bug. Bye, bearophile I never said bug :D just I thoght UniCode should make this a non-issue ...
Re: problems with mixins and non-ascii characters
Strange this bug seems to manifest itself only in some
situations
enum ä {ä = ä}
does not work in dpaste but suddenly it works on my local
enviorment (Windows-Mono-d,dmd 2.064.2)
it seems to have something todo with the abscence of a BOM header
...
Re: D for web?
there is vibe.d! look at the dconf2013 for a presentation about it and get it at vibed.org
Re: D for web?
you were faster :D
Re: The D Programming Language page 161.
I guess that new should be length as it represents as an integer variable
sort(charArray) doesn't work
sort doesn't work on an primitive Array ? Is that normal please look @http://www.dpaste.dzfl.pl/961286e1 because I don't know what i'm doing worng Thanks in Advance :D
howto make a function get a types form compilte-time-parameters AND from the arguments ?
(this is my first post so please alert me to any breaches of
forum etiquette)
Hello,
I have a problem with a helper function I'm writeting.
T[] makeArray(T,U)(immutable U[] paramArray) {
T[] result;
foreach (param;paramArray) {
result ~= T(param);
}
return result;
}
and I would like not to take the compile-time-parameter U but
insead infering it form the argumet.
is it possible ?
and if. how ?
Uplink_Coder
Re: howto make a function get types form compile-time-parameters AND from arguments ?
Maybe I shuold be more specific : for now It's: T[] arr = makeArray!(T,U)([some,instances,of,U]); but I would like it to be: auto arr = makeArray!(T)([some,instances,of,U]);
Re: howto make a function get types form compile-time-parameters AND from arguments ?
by changeing T[] makeArray(T,U)(immutable U[] paramArray) into T[] makeArray(T,U)(const U paramArray) if (isAggregateType!(U) || is Array!(U)) everything works perfectly Thanks very much --- Uplink_Coder
