On 2011-06-16 16:01, Claudiu Verdes wrote:
Hi,
I'm new to D and trying to follow Alexandrescu's TDPL code examples I came
across an error on the code below:
class A
{
inout(int) val() inout
{
return _val; // error - see below
}
private int _val;
};
The compiler (dmd v2.052)
On Thu, 16 Jun 2011 22:12:49 -0400, bearophile bearophileh...@lycos.com
wrote:
Claudiu Verdes:
What am I doing wrong? TDPL has a very similar example...
I think this TDPL example is not good. And generally inout is not fully
implemented in D yet.
Yes, a better example would be:
On Fri, 17 Jun 2011 00:05:56 -0400, Jose Armando Garcia
jsan...@gmail.com wrote:
It looks like the rt is not calling the postblit constructor when
concatenating arrays. For example, the following code:
import std.stdio;
struct Test
{
this(this) { writeln(copy done); }
void
On Fri, 17 Jun 2011 06:42:51 -0400, Steven Schveighoffer
schvei...@yahoo.com wrote:
On Fri, 17 Jun 2011 00:05:56 -0400, Jose Armando Garcia
jsan...@gmail.com wrote:
It looks like the rt is not calling the postblit constructor when
concatenating arrays. For example, the following code:
Lloyd Dupont Wrote:
Hi Jesse, this won't work!
It's my fault in not explaining my problem well though...
I forget to mention something...
I'm using property syntax and try to call the method
Say I have
=
private int _foo;
@property public int Foo() { return _foo; }
@property
Steven Schveighoffer wrote:
https://github.com/D-Programming-Language/druntime/pull/29
See if that helps. On my system, your code now results in your expected
output.
-Steve
If the compiler optimizes well enough the output given could be valid (it might
construct the struct directly where
This is a known bug, right?
struct Foo {
const char cc;
const char[1] array;
this(char c) {
cc = c; // OK
array[0] = c; // Error: this.array[0] isn't mutable
}
}
void main() {}
Bye,
bearophile
On 6/18/11 1:40 AM, Joel Christensen wrote:
How do you override int opCmp( Object obj )? What can I do with obj?
You can do pretty much whatever you want with it – obviously, you should
not modify obj, because comparison is not generally expected to modify
its arguments, but at the moment,
On 2011-06-17 17:09, bearophile wrote:
This is a known bug, right?
struct Foo {
const char cc;
const char[1] array;
this(char c) {
cc = c; // OK
array[0] = c; // Error: this.array[0] isn't mutable
}
}
void main() {}
You probably have to set the
Jonathan M Davis:
Sure, it's a special case where setting that one element sets
the whole array, but making that work would be special casing for such an
array and complicate the compiler for little benefit.
Don't worry, I have defined the array of length one just because I like to
minimize
Yeah, it works now. Thanks David :-)
I have actually used type o = cast(type)variable; But had
forgotten about it. Though the super part of what you said is more subtle.
On Fri, 17 Jun 2011 18:52:05 -0400, Timon Gehr timon.g...@gmx.ch wrote:
Steven Schveighoffer wrote:
https://github.com/D-Programming-Language/druntime/pull/29
See if that helps. On my system, your code now results in your expected
output.
-Steve
If the compiler optimizes well enough the
On 2011-06-17 18:18, bearophile wrote:
Jonathan M Davis:
Sure, it's a special case where setting that one element sets
the whole array, but making that work would be special casing for such an
array and complicate the compiler for little benefit.
Don't worry, I have defined the array
It helped! it's working now! :)
Thanks!
Jesse Phillips wrote in message news:itgg6i$2tf3$1...@digitalmars.com...
Lloyd Dupont Wrote:
Hi Jesse, this won't work!
It's my fault in not explaining my problem well though...
I forget to mention something...
I'm using property syntax and try to
given
A a =
class A {}
class B : A {}
how could I test, at runtime, if a is just a A or is a B?
also, give a type T and a TypeInfo variable, how can I know if a variable of
type T is attributable to a variable of type described by TypeInfo?
i.e. how could I implement the method
On 2011-06-17 19:58, Lloyd Dupont wrote:
given
A a =
class A {}
class B : A {}
how could I test, at runtime, if a is just a A or is a B?
Cast it. The result will be null if the cast fails.
if(cast(B)a)
//it's a B
else
//it's an A but not a B
- Jonathan M Davis
ho... easy hey!
but how about the other 2 test I'd like be able to run?
bool isTypeOf(T)(TypeInfo ti) { return T is ti }
bool isTypeOf(TypeInfo ti1, TypeInfo ti2) { return ti1 is ti2 }
Jonathan M Davis wrote in message
news:mailman.988.1308367581.14074.digitalmars-d-le...@puremagic.com...
On 2011-06-17 20:28, Lloyd Dupont wrote:
ho... easy hey!
but how about the other 2 test I'd like be able to run?
bool isTypeOf(T)(TypeInfo ti) { return T is ti }
bool isTypeOf(TypeInfo ti1, TypeInfo ti2) { return ti1 is ti2 }
I'm afraid that I don't know much about TypeInfo. In my
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