Re: opOpAssign on object properties
On Sunday, 8 January 2017 at 21:50:12 UTC, Ivan Kazmenko wrote: On Sunday, 8 January 2017 at 18:23:34 UTC, collerblade wrote: [...] Hmm, right. The setter is not called, and it's by the spec. Which says that "a op= b" is rewritten as "a.opOpAssign !(op) (b)". Here: https://dlang.org/spec/operatoroverloading.html#op-assign [...] Y, i have came up the same conclusion. I have to place an event like system into the Point. Ty
Re: Need some help understanding PyD
PS: Noticed something off. My python installation is 3.4.3:
Python 3.4.3 (default, Sep 14 2016, 12:36:27)
[GCC 4.8.4] on linux
However when I run:
context.py_stmts("import sys");
context.py_stmts("print(sys.version)");
I get:
3.4.0 (default, Apr 11 2014, 13:08:40)
[GCC 4.8.2]
Also, when I import numpy from python3, it works, but if I do:
context.py_stmts("import numpy");
I get this error:
pyd.exception.PythonException@source/app.d(20):
ImportError:
/usr/lib/python3.4/lib-dynload/_ctypes.cpython-34m-x86_64-linux-gnu.so: undefined symbol: _PyTraceback_Add
Need some help understanding PyD
I've been giving PyD a try. It's really nice and mostly
everything works out of the box.
I'm trying to use TensorFlow in D via Pytho, so I need to call
Python functions in D.
When I try to do:
auto context = new InterpContext();
context.py_stmts("import tensorflow");
I get this error:
pyd.exception.PythonException@source/app.d(19):
ImportError:
/usr/lib/python3.4/lib-dynload/_ctypes.cpython-34m-x86_64-linux-gnu.so: undefined symbol: _PyTraceback_Add
../../.dub/packages/pyd-0.9.8/pyd/infrastructure/pyd/exception.d:46 void
pyd.exception.handle_exception(immutable(char)[], ulong) [0x5917f6]
../../.dub/packages/pyd-0.9.8/pyd/infrastructure/pyd/embedded.d:147 void
pyd.embedded.InterpContext.py_stmts(immutable(char)[], immutable(char)[],
ulong) [0x59149a]
source/app.d:13 _Dmain [0x573cb2]
??:?
_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv
[0x5abfae]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).tryExec(scope void delegate()) [0x5abf04]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).runAll() [0x5abf6a]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).tryExec(scope void delegate()) [0x5abf04]
??:? _d_run_main [0x5abe61]
??:? main [0x575e6f]
??:? __libc_start_main [0x3fffbec4]
Program exited with code 1
How can I debug what the problem is?
Thanks,
Saurabh
Re: Getch() Problem: C vs D
On Sunday, 8 January 2017 at 21:19:15 UTC, LouisHK wrote: And works fine, but the D version below nothing happens when I hit ESCAPE: Is this a bug or there is another approach? Could this be because of maybe somehow it handles the console input? Kinda like how shift and different keys are toggles rather than dedicated to specific codes? Regardless, try ^[ ( Ctrl+[ ), which is 27 and ^] is 29.
Re: Mixin in Inline Assembly
On Monday, 9 January 2017 at 02:31:42 UTC, Chris M. wrote:
asm
{
mov EAX, tmp; // I'd also like to know if I could just
load *op1 directly into EAX
mov ECX, op2[EBP];
mixin(ins ~ " EAX, CL;"); // Issue here
mov tmp, EAX;
}
*op1 = tmp;
}
However, the inline assembler doesn't like me trying to do a
mixin. Is there a way around this?
'
You should be able to break it up too
asm {
mov EAX, tmp;
}
mixin("asm { "~ ins ~ "EAX, CL;" }");
asm {
move tmp, EAX;
}
you get the idea. It should compile to the same thing.
Re: Mixin in Inline Assembly
On Monday, 9 January 2017 at 02:38:01 UTC, Stefan Koch wrote: On Monday, 9 January 2017 at 02:31:42 UTC, Chris M. wrote: [...] Yes make the whole inline asm a mixin. Awesome, got it working. Thanks to both replies.
Re: Mixin in Inline Assembly
On Monday, 9 January 2017 at 02:31:42 UTC, Chris M. wrote:
However, the inline assembler doesn't like me trying to do a
mixin.
yep. iasm is completely independent from other fronted, it has
it's own lexer, parser and so on. don't expect those things to
work. the only way is to mixin the whole iasm block, including
`asm{}`.
Re: Mixin in Inline Assembly
On Monday, 9 January 2017 at 02:31:42 UTC, Chris M. wrote:
Right now I'm working on a project where I'm implementing a VM
in D. I'm on the rotate instructions, and realized I could
*almost* abstract the ror and rol instructions with the
following function
private void rot(string ins)(int *op1, int op2)
{
int tmp = *op1;
asm
{
mov EAX, tmp; // I'd also like to know if I could just
load *op1 directly into EAX
mov ECX, op2[EBP];
mixin(ins ~ " EAX, CL;"); // Issue here
mov tmp, EAX;
}
*op1 = tmp;
}
However, the inline assembler doesn't like me trying to do a
mixin. Is there a way around this?
(There is a reason op1 is a pointer instead of a ref int,
please don't ask about it)
Yes make the whole inline asm a mixin.
Mixin in Inline Assembly
Right now I'm working on a project where I'm implementing a VM in
D. I'm on the rotate instructions, and realized I could *almost*
abstract the ror and rol instructions with the following function
private void rot(string ins)(int *op1, int op2)
{
int tmp = *op1;
asm
{
mov EAX, tmp; // I'd also like to know if I could just
load *op1 directly into EAX
mov ECX, op2[EBP];
mixin(ins ~ " EAX, CL;"); // Issue here
mov tmp, EAX;
}
*op1 = tmp;
}
However, the inline assembler doesn't like me trying to do a
mixin. Is there a way around this?
(There is a reason op1 is a pointer instead of a ref int, please
don't ask about it)
Re: Android Status
On Sunday, 8 January 2017 at 22:19:31 UTC, Joakim wrote:
On Sunday, 8 January 2017 at 21:52:01 UTC, Ignacious wrote:
Not sure what is going on, of course ;) So much BS just to do
something that is suppose to be simple ;)
test.d
void main()
{
}
here is test.o
http://pastebin.com/NRrKgKtb
Any ideas?
Oh, that's easy: install the NDK too, as shown on the wiki.
You need the linker that supports ARM from the NDK. Follow the
instructions from the wiki to compile and link the binary,
simply having ldc do everything won't work.
Ok, after executing
$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/clang
-Wl,-z,nocopyreloc --sysroot=$NDK/platforms/android-9/arch-arm
-lgcc -gcc-toolchain
$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
-target armv7-none-linux-androideabi -no-canonical-prefixes
-fuse-ld=bfd -Wl,--fix-cortex-a8 -Wl,--no-undefined
-Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -fPIE -pie -mthumb
-Wl,--export-dynamic -lc -lm test.o lib/libphobos2-ldc.a
lib/libdruntime-ldc.a -o test
I get a test elf file with no errors(although 2.5MB for a hello
world).
I had to do the chmod 755 test
then
./test
to get any output. Before that no output and no errors so wasn't
sure what as going on.
Looks like everything is working! ;)
Seems like someone really needs to put some time in to getting
all this stuff organized and situated
Maybe the D language foundation can push some money towards it to
get it started off on the right foot?
I'll try to get some of the opengl examples on your repository to
see if they work soon.
Cross-compiler toolchains are never simple, consider yourself
lucky for having gotten off easy. :)
I realize things are difficult but it's people that make it that
way ;) Life would be so much simpler if people would just
properly document stuff exactly(or, rather, do what they are
suppose to do). (Even windows seems to love to forget to put in
descriptions of services, tasks, application descriptions, etc).
The main problem I have had seems to be that UoW uses ver 14.
Somehow I was able to upgrade by following docs online(wasn't
easy but eventually got there and everything seems to work... I
should have documented ;) but I wasn't sure if the process would
work. Supposedly ver 16 exists by one has to be part of the dev
team or something.
Re: Android Status
On Sunday, 8 January 2017 at 21:52:01 UTC, Ignacious wrote:
Not sure what is going on, of course ;) So much BS just to do
something that is suppose to be simple ;)
test.d
void main()
{
}
here is test.o
http://pastebin.com/NRrKgKtb
Any ideas?
Oh, that's easy: install the NDK too, as shown on the wiki. You
need the linker that supports ARM from the NDK. Follow the
instructions from the wiki to compile and link the binary, simply
having ldc do everything won't work.
Cross-compiler toolchains are never simple, consider yourself
lucky for having gotten off easy. :)
Re: Primality test function doesn't work on large numbers?
On 08.01.2017 08:52, Elronnd wrote:
I'm working on writing an RSA implementation, but I've run into a
roadblock generating primes. With a more than 9 bits, my program either
hangs for a long time (utilizing %100 CPU!) or returns a composite
number. With 9 or fewer bits, I get primes, but I have to run with a
huge number of iterations to actually _get_ a random number. It runs
fast, though. Why might this be? Code:
http://lpaste.net/1034777940820230144
Fixed version:
import std.bigint;
import std.stdio;
private alias bigint = BigInt;
bigint pow(bigint base,bigint exponent){
bigint tmp=1;
for(auto x=base,y=exponent;y;x*=x,y/=2)
if(y%2) tmp*=x;
return tmp;
}
bigint powm(bigint base,bigint exponent,bigint modulus){
bigint tmp=1;
for(auto x=base,y=exponent;y;x=x*x%modulus,y/=2)
if(y%2) tmp=tmp*x%modulus;
return tmp;
}
private pragma(inline, true) bigint pow(int base, bigint exponent) {
return pow(bigint(base), exponent);
}
private pragma(inline, true) bigint pow(bigint base, int exponent) {
return pow(base, bigint(exponent));
}
private pragma(inline, true) bigint pow(int base, int exponent) {
return pow(bigint(base), bigint(exponent));
}
// Credit to
http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf appendix C.3
private bigint genprime(int bits, int numtests){
import std.random: uniform;
bool mrprime(bigint integer, int iterations) {
if(integer%2==0)
return false;
bigint m, a = 0, tmp = integer, b, z;
int length;
for(m=integer-1;m%2==0;m/=2,++a){}
assert((integer-1)%pow(bigint(2), a)==0);
while(tmp != 0) {
tmp >>=1;
length += 1;
}
for (int i=0; i// Create b such that b has the same number of bits as
"integer"
for (int j = 1; j<=length; j++) {
b <<= 1;
b += uniform(0, 2);
}
while ((b <= 1) || (b >= (integer-1))) {
b = 0;
for (int j = 1; j<=length; j++) {
b <<= 1;
b += uniform(0, 2);
}
}
z = powm(b, m, integer);
if((z == 1) || (z == integer-1))
goto endofloop;
for(int k=1; k<=a-1; k++) {
z = z*z%integer;
if(z == integer-1)
goto endofloop;
if(z == 1)
return false;
}
return false;
endofloop:
}
return true;
}
bigint genbigint(int numbits) {
bigint tmp;
while (numbits --> 0) {
tmp <<= 1;
tmp += uniform(0, 2);
}
return tmp;
}
bigint currnum;
while (true) {
currnum = genbigint(bits);
if (mrprime(currnum, numtests)) {
return currnum;
}
}
assert(0);
}
void main(){
writeln(genprime(300,30));
}
Re: Android Status
On Sunday, 8 January 2017 at 20:34:21 UTC, Joakim wrote:
On Sunday, 8 January 2017 at 19:58:06 UTC, Ignacious wrote:
I suppose it will be easier to install a real ubuntu distro
rather than relying on windows? All these issues seem to be
related to outdated versions?
Distributor ID: Ubuntu
Description:Ubuntu 14.04.5 LTS
Release:14.04
Codename: trusty
I doubt that'd work either as Debian just uses older packages.
Your best bet may be to just compile ldc yourself, by following
the instructions on the wiki.
Well, I finally got it to upgrade to 16.. when I run ldc2 or
ldmd2 I get the following errors
/usr/bin/ld: test.o: Relocations in generic ELF (EM: 40)
/usr/bin/ld: test.o: Relocations in generic ELF (EM: 40)
/usr/bin/ld: test.o: Relocations in generic ELF (EM: 40)
/usr/bin/ld: test.o: Relocations in generic ELF (EM: 40)
/usr/bin/ld: test.o: Relocations in generic ELF (EM: 40)
/usr/bin/ld: test.o: Relocations in generic ELF (EM: 40)
/usr/bin/ld: test.o: Relocations in generic ELF (EM: 40)
test.o: error adding symbols: File in wrong format
collect2: error: ld returned 1 exit status
Error: /usr/bin/gcc failed with status: 1
test is just a simple hello world.
root@:/mnt/b/DLang/ldc2Android# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
5.4.0-6ubuntu1~16.04.4'
--with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++
--prefix=/usr --program-suffix=-5 --enable-shared
--enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/
--enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new
--enable-gnu-unique-object --disable-vtable-verify
--enable-libmpx --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre
--enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
--with-arch-directory=amd64
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc
--enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4)
Not sure what is going on, of course ;) So much BS just to do
something that is suppose to be simple ;)
test.d
void main()
{
}
here is test.o
http://pastebin.com/NRrKgKtb
Any ideas?
Re: opOpAssign on object properties
On Sunday, 8 January 2017 at 18:23:34 UTC, collerblade wrote: On Sunday, 8 January 2017 at 10:03:50 UTC, Ivan Kazmenko wrote: On Sunday, 8 January 2017 at 09:22:12 UTC, collerblade wrote: [...] 1. If you want the member variable to change, naturally, you should provide a getter property which returns a reference to that variable: [...] yes i tried the reference return, but the problem is, that the setter does NOT gets called, no matter what the result type of the opOpAssign method is. I want to detect changes, but this way i still not able. A a = new A; a.location+=Point(1,1); //the private value changes, but the setter does not get called Hmm, right. The setter is not called, and it's by the spec. Which says that "a op= b" is rewritten as "a.opOpAssign !(op) (b)". Here: https://dlang.org/spec/operatoroverloading.html#op-assign So, no *assignment* happens when you call a.location+=Point(1,1). To have a side effect triggered by opAssign-ment, you can do it inside the opOpAssign function. Looking at it another way, actions with struct Point can be seen as the responsibility of struct Point. If you want to monitor these actions, do it in the code of opOpAssign function. After that, your class A can inspect the state of its corresponding Point. If normal Points don't need that, you can have a special SelfAwarePoint which has an alias this to its member Point. Alternatively, you can have two getter properties: one as const and one by reference. When the reference one gets called, you know the value of Point *may* have changed. Well, I'm out of ideas for now. If these still don't quite satisfy you, including a bigger picture of what you want to achieve may help. Ivan Kazmenko.
Getch() Problem: C vs D
Hello, I minimize the problem to identify the problem:
Here the C version:
#include
int main(){
int c;
while(c != 27){
printf("%d\n", (c = getch()));
}
return 0;
}
And works fine, but the D version below nothing happens when I
hit ESCAPE:
import std.stdio;
extern (C) int getch();
int main(){
int c;
while(c != 27){
printf("%d\n", (c = getch()));
}
return 0;
}
Is this a bug or there is another approach?
Thanks,
L.
Re: Android Status
On Sunday, 8 January 2017 at 19:58:06 UTC, Ignacious wrote: I suppose it will be easier to install a real ubuntu distro rather than relying on windows? All these issues seem to be related to outdated versions? Distributor ID: Ubuntu Description:Ubuntu 14.04.5 LTS Release:14.04 Codename: trusty I doubt that'd work either as Debian just uses older packages. Your best bet may be to just compile ldc yourself, by following the instructions on the wiki.
Re: Android Status
Yeah, not a good idea to build from source yourself. Try the advice here, ie see if you can install a package with that library or just symlink to the older library if not: http://askubuntu.com/questions/771047/erlang-error-while-loading-shared-libraries-libncursesw-so-6 Well, the only way to get it to work is rename 5.9 ver to 6.0, but then now I get the error root@DESKTOP:/mnt/b/DLang/ldc2Android# bin/ldmd2 test.d bin/ldmd2: error while loading shared libraries: libncursesw.so.6: cannot open shared object file: No such file or directory root@DESKTOP:/mnt/b/DLang/ldc2Android# bin/ldmd2 test.d bin/ldmd2: error while loading shared libraries: libncursesw.so.6: cannot open shared object file: No such file or directory root@DESKTOP:/mnt/b/DLang/ldc2Android# bin/ldmd2 test.d bin/ldmd2: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by bin/ldmd2) root@DESKTOP:/mnt/b/DLang/ldc2Android# bin/ldc2 test.d bin/ldc2: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by bin/ldc2) bin/ldc2: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by bin/ldc2) I followed this page: http://askubuntu.com/questions/575505/glibcxx-3-4-20-not-found-how-to-fix-this-error and now I get the error bin/ldc2: relocation error: bin/ldc2: symbol _ZNKSt3_V214error_category10_M_messageB5cxx11Ei, version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference even though strings /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBCXX GLIBCXX_3.4 GLIBCXX_3.4.1 GLIBCXX_3.4.2 GLIBCXX_3.4.3 GLIBCXX_3.4.4 GLIBCXX_3.4.5 GLIBCXX_3.4.6 GLIBCXX_3.4.7 GLIBCXX_3.4.8 GLIBCXX_3.4.9 GLIBCXX_3.4.10 GLIBCXX_3.4.11 GLIBCXX_3.4.12 GLIBCXX_3.4.13 GLIBCXX_3.4.14 GLIBCXX_3.4.15 GLIBCXX_3.4.16 GLIBCXX_3.4.17 GLIBCXX_3.4.18 GLIBCXX_3.4.19 GLIBCXX_3.4.20 GLIBCXX_3.4.21 GLIBCXX_3.4.22 GLIBCXX_DEBUG_MESSAGE_LENGTH I suppose it will be easier to install a real ubuntu distro rather than relying on windows? All these issues seem to be related to outdated versions? Distributor ID: Ubuntu Description:Ubuntu 14.04.5 LTS Release:14.04 Codename: trusty
Re: opOpAssign on object properties
On Sunday, 8 January 2017 at 10:03:50 UTC, Ivan Kazmenko wrote: On Sunday, 8 January 2017 at 09:22:12 UTC, collerblade wrote: [...] 1. If you want the member variable to change, naturally, you should provide a getter property which returns a reference to that variable: [...] yes i tried the reference return, but the problem is, that the setter does NOT gets called, no matter what the result type of the opOpAssign method is. I want to detect changes, but this way i still not able. A a = new A; a.location+=Point(1,1); //the private value changes, but the setter does not get called
Re: CTFE difference between dmd and ldc2
On Saturday, 7 January 2017 at 22:55:55 UTC, Joseph Rushton Wakeling wrote: I should probably also create a formal issue for this. Any thoughts on how best to break it down into a minimal example? It does not appear easy to do so at first glance :-\ Turned out to be easier than I anticipated. It was not a CTFE problem but one of default initialization of struct fields: https://issues.dlang.org/show_bug.cgi?id=17073 In short, `void` default initialization seems to take priority with dmd regardless of anything else.
Re: opOpAssign on object properties
On Sunday, 8 January 2017 at 09:22:12 UTC, collerblade wrote:
How can i do opOpAssign with properties??
1. If you want the member variable to change, naturally, you
should provide a getter property which returns a reference to
that variable:
ref Point location() @property {
return m_location;
}
This alone solves the immediate problem.
2. Note that it is common for assignment expressions to return a
reference to the result, which would, for example, make chains
like "a = (b += c)" possible:
ref Point opOpAssign(string op)(in Point p) if (op == "+") {
x+=p.x;
y+=p.y;
return this;
}
Here's a complete working version of your example:
-
struct Point {
float x=0,y=0;
this(float _x, float _y) {
x=_x;
y=_y;
}
//opopassign for +=
ref Point opOpAssign(string op)(in Point p) if (op == "+") {
x+=p.x;
y+=p.y;
return this;
}
}
class A {
public:
ref Point location() @property {
return m_location;
}
void location(in Point newlocation) @property {
m_location=newlocation;
}
private:
Point m_location;
}
void main() {
import std.stdio;
auto a= new A;
a.location+=Point(1,1);
writeln (a.location); // Point(1, 1)
a.location+=Point(1,1);
writeln (a.location); // Point(2, 2)
}
-
Ivan Kazmenko.
Re: Primality test function doesn't work on large numbers?
On Sunday, 8 January 2017 at 07:52:33 UTC, Elronnd wrote: I'm working on writing an RSA implementation, but I've run into a roadblock generating primes. With a more than 9 bits, my program either hangs for a long time (utilizing %100 CPU!) or returns a composite number. With 9 or fewer bits, I get primes, but I have to run with a huge number of iterations to actually _get_ a random number. It runs fast, though. Why might this be? Code: http://lpaste.net/1034777940820230144 I haven't read your code very exactly, but I have an assumption and you can check if it is helpful:) I think your actual problem is this line: z = pow(b, m) % integer; If it does what I think, it can be horribly slow and memory consuming. You have to implement your own pow function that does a ^ b mod c. Look into python source code or in "tanya" (D): https://github.com/caraus-ecms/tanya/blob/master/source/tanya/math/package.d. It is the same algorithm that phobos uses but with modulo operation built-in and a bit differently written (my code is based neither on python nor on phobos and uses a different bigint implementation). You can also rewrite pow(z, 2) % integer then. It will be faster. Try to reduce bigint copying and arithmetic anyway if possible.
opOpAssign on object properties
hello guys,
i would like to have properties with /= *= += -= operators. My
code:
struct Point {
float x=0,y=0;
this(float _x, float _y) {
x=_x;
y=_y;
}
//opassign for +
//opopassign for +=
void opOpAssign(string op=="+")(in Point p) {
x+=p.x;
y+=p.y;
}
}
class A {
public:
Point location() const @property {
return m_location;
}
void location(in Point newlocation) @property {
m_location=newlocation;
}
private:
Point m_location;
}
void main() {
auto a= new A;
a.location=a.location+Point(1,1); //DOES WORK
a.location+=Point(1,1); //DOESN'T WORK
}
The problem is that this code is not working. The getter and the
opOpAssign gets called, but the setter does not.
How can i do opOpAssign with properties??
