ketmar via Digitalmars-d-learn wrote:
On Sat, 03 Jan 2015 14:45:24 +1030
ted via Digitalmars-d-learn digitalmars-d-learn@puremagic.com wrote:
Well, I just cleared up some of my misunderstanding.
I did not realise the mA (within struct Test) would be a _copy_ of arg,
not a reference
via Digitalmars-d-learn wrote:
On Sat, 03 Jan 2015 13:25:31 +1030
ted via Digitalmars-d-learn digitalmars-d-learn@puremagic.com wrote:
I get the following error from the code below: (dmd2.066.1, linux)
test.d(26): Error: cannot modify struct myTest1 Test with immutable
members
ketmar via Digitalmars-d-learn wrote:
On Sat, 03 Jan 2015 15:56:58 +1030
ted via Digitalmars-d-learn digitalmars-d-learn@puremagic.com wrote:
Ironically, I'm trying to use const in an effort to understand it...but
there seems to be an unusual amount of pain until I grok it.
just remember
Well, I just cleared up some of my misunderstanding.
I did not realise the mA (within struct Test) would be a _copy_ of arg, not
a reference (pointer) to arg.
So the more correct code snippet would be:
struct A
{
int someInt;
}
struct Test
{
@property { const(A) getA() { return *mA;
I get the following error from the code below: (dmd2.066.1, linux)
test.d(26): Error: cannot modify struct myTest1 Test with immutable members
Is this expected?
If so, how can I achieve this result - being able to set (a new) initial value
of myTest1 from within an nested function ?
thanks !
Ali Çehreli wrote:
On 01/02/2015 10:10 PM, ted wrote:
I'm now taking the view that const is there for the compiler to
optimise code on the basis that nothing can alter it once set (and can
only be set on initialisation).
Of course, that is true for const values, not for const
Darrell wrote:
Seems when creating your own ranges they can't be a class.
Must be a struct or Segmentation fault (core dumped) will follow.
This works as long as Test is a struct.
struct Test
{
@property int front()
{
return 2;
}
void popFront()
{
}
Hi!
I get the following compile error (linux, dmd2.066.1):
test.d(13): Error: template test.testFunc cannot deduce function from
argument types !()(double[], double), candidates are:
test.d(3):test.testFunc(R)(R range, ElementType!R foo)
For the following test file:
import std.range:
Ali Çehreli wrote:
On 02/10/2015 12:31 AM, ted wrote:
ElementType!R testFunc(R)( R range, ElementType!R foo) //
compiles
with double foo
If think it is a little too much to ask from the template system of D. A
proper way of doing the same thing is to use a template constraint:
bearophile wrote:
ted:
Could someone enlighten me ?
This works:
import std.range: ElementType, isInputRange;
ElementType!R testFunc(R, T)(R range, T foo)
if (is(ElementType!R == T)) {
static assert(isInputRange!R);
typeof(return) retVal = foo ^^ 2; // More DRY.
bearophile wrote:
ted:
... where you say 'More DRY' above, are you referring to
I was referring to both, but mostly to the typeof. It's more DRY
(http://en.wikipedia.org/wiki/Don%27t_repeat_yourself ). You are
stating only once the type of the return variable. This is less
bug-prone.
have upgraded from 2.066.1 to 2.068.0, and have a change in behaviour:
import std.container: SList;
void main()
{
SList!int tmp;
tmp.insertAfter( tmp[], 3 );
}
used to work happily with dmd2.066.1, causes assert
(core.exception.AssertError@std/container/slist.d(57): Assertion
try replacing:
final void output(T)(string text, T params...) const {
with
final void output(T...)(string text, T params) const {
Andre Polykanine via Digitalmars-d-learn wrote:
Hi everyone,
It's me again.
Now I'm struggling with the `output` member function which should
try:
auto names1 = names.map!( a = replace(a, _, ));
...not sure how to do it in-place though.
Joel wrote:
auto names =
Alef Bet Gimel Dalet He Vav Zayen Het Tet Yod Final_Kaf
Kaf Lamed Final_Mem Mem Final_Nun Nun Samekh Ayin Final_Pe
Pe Final_Tsadi Tsadi Qof Resh Shin Tav.split;
thanks for the reply...
the method you described is suitable for appending to an array, but I'm
using the singly-linked-list container.
I've extended the test, and I'm pretty sure it's a bug...
--ted
Nicholas Wilson wrote:
On Thursday, 13 August 2015 at 08:40:13 UTC, ted wrote:
have
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