Re: Must I compile on the target architecture?
On Friday, 25 December 2015 at 12:43:05 UTC, Jakob Jenkov wrote: Hi, just a quick question: If I write a program in D and I use Windows for development but want it to run on Linux, do I have to copy the source code to the target Linux machine and compile it there, to make an executable for that machine? What is the standard process for cross platform compilation? GDC is best for cross platform compilation,download it from gdcproject.org.
Re: Variable below zero but if statement doesn't grab?
Get used to it :) Unfortunately, DMD is not emitting the best
debug information. The program flow is correct, but the line
info is not, that's why the execution step will not be
triggered in the real location of the source code.
The simplest example is this:
import std.stdio;
void foo(int x)
{
if (x > 0) //step 1, correct
{
writeln("bigger"); //step 2, correct
}
else
{
writeln("lower"); //step 3, wrong
}
}
int main(string[] argv)
{
foo(20); //breakpoint with step in
return 0;
}
If you really want to confuse the debugger, write some asserts
or contracts here and there and your program will be impossible
to debug :)
So, do you have any information if there will be a fix to this?
It is really hard (at least for me) to work with a language which
doesn't feature a working debugger...
Re: Variable below zero but if statement doesn't grab?
On Monday, 28 December 2015 at 19:22:00 UTC, jkpl wrote: On Monday, 28 December 2015 at 18:33:16 UTC, jkpl wrote: On Monday, 28 December 2015 at 18:12:24 UTC, jkpl wrote: On Monday, 28 December 2015 at 18:02:53 UTC, jkpl wrote: On Monday, 28 December 2015 at 15:50:06 UTC, Basile B. wrote: On Monday, 28 December 2015 at 15:07:08 UTC, jkpl wrote: On Sunday, 27 December 2015 at 16:00:34 UTC, jkpl wrote: On Sunday, 27 December 2015 at 15:53:55 UTC, TheDGuy wrote: Any idea what i am doing wrong? https://www.youtube.com/watch?v=j_VCa-5VeP8 You could post the code also, personnaly I'm always almost at 2 meters from my screen, with zoom, so I can't read the code... I work more or less lying on a futon. Desks are so cheesy... Anarchism is comfy... when I'm tired with the conformism I just let my head go on the pillow and I sleep... (snoring) Even if I dont't think that you have won: https://youtu.be/Uj_7kTwRMKE?t=2m35s https://www.youtube.com/watch?v=g7qx5oYdOEA tous fashos: juif, chrétien, musulmans,... Il n'y a bien que les communistes qui ont compris que les religions c'est de la merde. Also, european people should ask themselves why they stick on the US culture since 60 years, while actually Russians freed Berlin. One last thing. Tough guy ? https://www.youtube.com/watch?v=1igvrZ0KosA I always try to find a link to the scene, in south america: "And finally I've done what I always done...". I never find it. It's probably because judgment defaits us: https://www.youtube.com/watch?v=xNRBajLM8_4 We want to show something, but we're always near, no so far, not close to our idea. It exists but we cant find a reference to the perfect representation of the idea...
Re: Is it possible to elegantly create a range over a binary heap?
On Monday, 28 December 2015 at 14:05:42 UTC, Ivan Kazmenko wrote: 1. You can find maximum, then second maximum, then third maximum and so on - each in constant memory and linear time. So, if performance is somehow not an issue, there is a way to do it @nogc but in N^2 operations. That's perhaps too much of a performance hit. 2. If you output the whole array anyway, you may sort the array in place. A sorted array obeys the heap property, so subsequent heap operations will still work. That's actually a good idea. Sort it first, and it should still be balanced and correct. Then iteration is easy! 3. The tricky part is when we want to support parallel iteration over the same heap. If we look closely at one iteration of heapsort algorithm, it will perhaps become clear how to output values so that the array is a heap between any two consecutive output operations. At the very least, our heap struct over the array can just track which part of the array is already sorted, and work with it separately. 4. Reading and modifying the heap in parallel at the same time does not look possible anyway, so this is as far as we can get. I'll have to test parallel iteration.
Re: Variable below zero but if statement doesn't grab?
On Monday, 28 December 2015 at 18:33:16 UTC, jkpl wrote: On Monday, 28 December 2015 at 18:12:24 UTC, jkpl wrote: On Monday, 28 December 2015 at 18:02:53 UTC, jkpl wrote: On Monday, 28 December 2015 at 15:50:06 UTC, Basile B. wrote: On Monday, 28 December 2015 at 15:07:08 UTC, jkpl wrote: On Sunday, 27 December 2015 at 16:00:34 UTC, jkpl wrote: On Sunday, 27 December 2015 at 15:53:55 UTC, TheDGuy wrote: Any idea what i am doing wrong? https://www.youtube.com/watch?v=j_VCa-5VeP8 You could post the code also, personnaly I'm always almost at 2 meters from my screen, with zoom, so I can't read the code... I work more or less lying on a futon. Desks are so cheesy... Anarchism is comfy... when I'm tired with the conformism I just let my head go on the pillow and I sleep... (snoring) Even if I dont't think that you have won: https://youtu.be/Uj_7kTwRMKE?t=2m35s https://www.youtube.com/watch?v=g7qx5oYdOEA tous fashos: juif, chrétien, musulmans,... Il n'y a bien que les communistes qui ont compris que les religions c'est de la merde. Also, european people should ask themselves why they stick on the US culture since 60 years, while actually Russians freed Berlin. One last thing. Tough guy ? https://www.youtube.com/watch?v=1igvrZ0KosA
Re: Variable below zero but if statement doesn't grab?
On Monday, 28 December 2015 at 18:12:24 UTC, jkpl wrote: On Monday, 28 December 2015 at 18:02:53 UTC, jkpl wrote: On Monday, 28 December 2015 at 15:50:06 UTC, Basile B. wrote: On Monday, 28 December 2015 at 15:07:08 UTC, jkpl wrote: On Sunday, 27 December 2015 at 16:00:34 UTC, jkpl wrote: On Sunday, 27 December 2015 at 15:53:55 UTC, TheDGuy wrote: Any idea what i am doing wrong? https://www.youtube.com/watch?v=j_VCa-5VeP8 You could post the code also, personnaly I'm always almost at 2 meters from my screen, with zoom, so I can't read the code... I work more or less lying on a futon. Desks are so cheesy... Anarchism is comfy... when I'm tired with the conformism I just let my head go on the pillow and I sleep... (snoring) Even if I dont't think that you have won: https://youtu.be/Uj_7kTwRMKE?t=2m35s https://www.youtube.com/watch?v=g7qx5oYdOEA tous fashos: juif, chrétien, musulmans,... Il n'y a bien que les communistes qui ont compris que les religions c'est de la merde. Also, european people should ask themselves why they stick on the US culture since 60 years, while actually Russians freed Berlin.
Re: Variable below zero but if statement doesn't grab?
On Monday, 28 December 2015 at 18:02:53 UTC, jkpl wrote: On Monday, 28 December 2015 at 15:50:06 UTC, Basile B. wrote: On Monday, 28 December 2015 at 15:07:08 UTC, jkpl wrote: On Sunday, 27 December 2015 at 16:00:34 UTC, jkpl wrote: On Sunday, 27 December 2015 at 15:53:55 UTC, TheDGuy wrote: Any idea what i am doing wrong? https://www.youtube.com/watch?v=j_VCa-5VeP8 You could post the code also, personnaly I'm always almost at 2 meters from my screen, with zoom, so I can't read the code... I work more or less lying on a futon. Desks are so cheesy... Anarchism is comfy... when I'm tired with the conformism I just let my head go on the pillow and I sleep... (snoring) Even if I dont't think that you have won: https://youtu.be/Uj_7kTwRMKE?t=2m35s https://www.youtube.com/watch?v=g7qx5oYdOEA tous fashos: juif, chrétien, musulmans,... Il n'y a bien que les communistes qui ont compris que les religions c'est de la merde.
Re: Variable below zero but if statement doesn't grab?
On Monday, 28 December 2015 at 15:50:06 UTC, Basile B. wrote: On Monday, 28 December 2015 at 15:07:08 UTC, jkpl wrote: On Sunday, 27 December 2015 at 16:00:34 UTC, jkpl wrote: On Sunday, 27 December 2015 at 15:53:55 UTC, TheDGuy wrote: Any idea what i am doing wrong? https://www.youtube.com/watch?v=j_VCa-5VeP8 You could post the code also, personnaly I'm always almost at 2 meters from my screen, with zoom, so I can't read the code... I work more or less lying on a futon. Desks are so cheesy... Anarchism is comfy... when I'm tired with the conformism I just let my head go on the pillow and I sleep... (snoring) Even if I dont't think that you have won: https://youtu.be/Uj_7kTwRMKE?t=2m35s
Re: Variable below zero but if statement doesn't grab?
On Sunday, 27 December 2015 at 23:24:55 UTC, TheDGuy wrote:
On Sunday, 27 December 2015 at 22:51:27 UTC, Ali Çehreli wrote:
On 12/27/2015 07:53 AM, TheDGuy wrote:
Any idea what i am doing wrong?
https://www.youtube.com/watch?v=j_VCa-5VeP8
YouTube says that the video has been removed by the user.
That's exactly the reason why I don't like even dpaste. There
is no guarantee that such threads will be useful forever. :)
For me, sample code should be right here, and it should be
short enough to practically be here.
Ali
I deleted the video because the problem was solved, it was
neither a problem with the single '&' nor with my code it just
showed a strange behaviour while debugging but the function
returned the right value. Sample code is in my second post.
Get used to it :) Unfortunately, DMD is not emitting the best
debug information. The program flow is correct, but the line info
is not, that's why the execution step will not be triggered in
the real location of the source code.
The simplest example is this:
import std.stdio;
void foo(int x)
{
if (x > 0) //step 1, correct
{
writeln("bigger"); //step 2, correct
}
else
{
writeln("lower"); //step 3, wrong
}
}
int main(string[] argv)
{
foo(20); //breakpoint with step in
return 0;
}
If you really want to confuse the debugger, write some asserts or
contracts here and there and your program will be impossible to
debug :)
Re: How to config the GDC on linux target for ARM linux?
On Monday, 28 December 2015 at 15:23:19 UTC, FrankLike wrote: New Answer: I've gotten the answer: use the difference 'gcc' for c code. ---For x86_64: #! /bin/sh dfiles="max31855.d max5322.d mcp23008.d mcp23016.d mcp23016reg.d mcp23017.d mcp23s08.d mcp23s17.d mcp23x08.d mcp23x0817.d mcp3002.d mcp3004.d mcp3422.d mcp4802.d pcf8574.d pcf8591.d sn3218.d softPwm.d softServo.d softTone.d sr595.d wiringPi.d wiringPiI2C.d wiringPiSPI.d wiringSerial.d wiringShift.d wpiExtensions.d" ofiles="drcSerial.o max31855.o max5322.o mcp23008.o mcp23016.o mcp23017.o mcp23s08.o mcp23s17.o mcp3002.o mcp3004.o mcp3422.o mcp4802.o pcf8574.o pcf8591.o piHiPri.o piThread.o sn3218.o softPwm.o softServo.o softTone.o sr595.o wiringPi.o wiringPiI2C.o wiringPiSPI.o wiringSerial.o wiringShift.o wpiExtensions.o" gcc -c *.c -m64 /opt/x86_64-pc-linux-gnu/bin/x86_64-linux-gnu-gdc -o my my.d $ofiles -I$dfiles For ARM(add -I.): #! /bin/sh cfiles="wiringPi.c max31855.c max5322.c mcp23008.c mcp23016.c mcp23017.c mcp23s08.c mcp23s17.c mcp3002.c mcp3004.c mcp3422.c mcp4802.c pcf8574.c pcf8591.c sn3218.c softPwm.c softServo.c softTone.c sr595.c wiringPiI2C.c wiringPiSPI.c wiringSerial.c wiringShift.c wpiExtensions.c" dfiles="max31855.d max5322.d mcp23008.d mcp23016.d mcp23016reg.d mcp23017.d mcp23s08.d mcp23s17.d mcp23x08.d mcp23x0817.d mcp3002.d mcp3004.d mcp3422.d mcp4802.d pcf8574.d pcf8591.d sn3218.d softPwm.d softServo.d softTone.d sr595.d wiringPi.d wiringPiI2C.d wiringPiSPI.d wiringSerial.d wiringShift.d wpiExtensions.d" ofiles="drcSerial.o max31855.o max5322.o mcp23008.o mcp23016.o mcp23017.o mcp23s08.o mcp23s17.o mcp3002.o mcp3004.o mcp3422.o mcp4802.o pcf8574.o pcf8591.o piHiPri.o piThread.o sn3218.o softPwm.o softServo.o softTone.o sr595.o wiringPi.o wiringPiI2C.o wiringPiSPI.o wiringSerial.o wiringShift.o wpiExtensions.o" /opt/arm-unknown-linux-gnueabihf/bin/arm-unknown-linux-gnueabihf-gcc -marm -c $cfiles -I. /opt/arm-unknown-linux-gnueabihf/bin/arm-unknown-linux-gnueabihf-gdc -o my my.d $ofiles -I$dfiles
Re: Variable below zero but if statement doesn't grab?
On Monday, 28 December 2015 at 15:07:08 UTC, jkpl wrote: On Sunday, 27 December 2015 at 16:00:34 UTC, jkpl wrote: On Sunday, 27 December 2015 at 15:53:55 UTC, TheDGuy wrote: Any idea what i am doing wrong? https://www.youtube.com/watch?v=j_VCa-5VeP8 You could post the code also, personnaly I'm always almost at 2 meters from my screen, with zoom, so I can't read the code... I work more or less lying on a futon. Desks are so cheesy... Anarchism is comfy...
Re: How to use GDC to get .a file on Linux?
Answer is here: http://forum.dlang.org/thread/txvntyahlaewutzzw...@forum.dlang.org
Re: GDC build wiringPi for 'Raspberry Pi',here is error info
Answer is here: http://forum.dlang.org/thread/txvntyahlaewutzzw...@forum.dlang.org
Re: How to config the GDC on linux target for ARM linux?
I've gotten the answer: use the difference 'gcc' for c code. ---For x86_64: #! /bin/sh dfiles="max31855.d max5322.d mcp23008.d mcp23016.d mcp23016reg.d mcp23017.d mcp23s08.d mcp23s17.d mcp23x08.d mcp23x0817.d mcp3002.d mcp3004.d mcp3422.d mcp4802.d pcf8574.d pcf8591.d sn3218.d softPwm.d softServo.d softTone.d sr595.d wiringPi.d wiringPiI2C.d wiringPiSPI.d wiringSerial.d wiringShift.d wpiExtensions.d" ofiles="drcSerial.o max31855.o max5322.o mcp23008.o mcp23016.o mcp23017.o mcp23s08.o mcp23s17.o mcp3002.o mcp3004.o mcp3422.o mcp4802.o pcf8574.o pcf8591.o piHiPri.o piThread.o sn3218.o softPwm.o softServo.o softTone.o sr595.o wiringPi.o wiringPiI2C.o wiringPiSPI.o wiringSerial.o wiringShift.o wpiExtensions.o" gcc -c *.c -m64 /opt/x86_64-pc-linux-gnu/bin/x86_64-linux-gnu-gdc -o my my.d $ofiles -I$dfiles For ARM: #! /bin/sh cfiles="wiringPi.c max31855.c max5322.c mcp23008.c mcp23016.c mcp23017.c mcp23s08.c mcp23s17.c mcp3002.c mcp3004.c mcp3422.c mcp4802.c pcf8574.c pcf8591.c sn3218.c softPwm.c softServo.c softTone.c sr595.c wiringPiI2C.c wiringPiSPI.c wiringSerial.c wiringShift.c wpiExtensions.c" dfiles="max31855.d max5322.d mcp23008.d mcp23016.d mcp23016reg.d mcp23017.d mcp23s08.d mcp23s17.d mcp23x08.d mcp23x0817.d mcp3002.d mcp3004.d mcp3422.d mcp4802.d pcf8574.d pcf8591.d sn3218.d softPwm.d softServo.d softTone.d sr595.d wiringPi.d wiringPiI2C.d wiringPiSPI.d wiringSerial.d wiringShift.d wpiExtensions.d" ofiles="drcSerial.o max31855.o max5322.o mcp23008.o mcp23016.o mcp23017.o mcp23s08.o mcp23s17.o mcp3002.o mcp3004.o mcp3422.o mcp4802.o pcf8574.o pcf8591.o piHiPri.o piThread.o sn3218.o softPwm.o softServo.o softTone.o sr595.o wiringPi.o wiringPiI2C.o wiringPiSPI.o wiringSerial.o wiringShift.o wpiExtensions.o" /opt/arm-unknown-linux-gnueabihf/bin/arm-unknown-linux-gnueabihf-gcc -marm -c $cfiles /opt/arm-unknown-linux-gnueabihf/bin/arm-unknown-linux-gnueabihf-gdc -o my my.d $ofiles -I$dfiles
Re: Variable below zero but if statement doesn't grab?
On Sunday, 27 December 2015 at 16:00:34 UTC, jkpl wrote: On Sunday, 27 December 2015 at 15:53:55 UTC, TheDGuy wrote: Any idea what i am doing wrong? https://www.youtube.com/watch?v=j_VCa-5VeP8 You could post the code also, personnaly I'm always almost at 2 meters from my screen, with zoom, so I can't read the code... I work more or less lying on a futon. Desks are so cheesy...
vibe.d / GUI integration
Hi, I have two questions regarding the following, IMO very cool, vibe feature: "Contrary to most other frameworks supporting asynchronous I/O, vibe.d fully integrates with the UI event loop, so that it can be used to power applications with a graphical user interface." 1. Am I right, that there is no GUI event handling for OSX support yet? If, are there are any technical limitations in vibe that it couldn't be added? 2. Are there are any examples WRT to using vibe with a GUI event loop? Best regards. -- Robert M. Münch http://www.saphirion.com smarter | better | faster
Re: Lots of D code
On Monday, 28 December 2015 at 14:24:04 UTC, Basile B. wrote: On Wednesday, 23 December 2015 at 00:59:53 UTC, steven kladitis wrote: ... All of the programs are from RosettaCode.org. The script to compile them generates a log file and you will see a few that the linker just stops No idea why. A few have 64K link errors no idea why. TIA, Steven what's up ? ;) Did you upload, so that bugs can be verified ? As the original poster mentioned RosettaCode, perhaps they are just programs from http://rosettacode.org/wiki/D ? There are 742 entries, but some (like http://rosettacode.org/wiki/99_Bottles_of_Beer#D) contain more than one D program.
Re: Multiple selective imports on one line
On Monday, 28 December 2015 at 14:16:36 UTC, Basile B. wrote: On Monday, 28 December 2015 at 14:09:30 UTC, Joakim wrote: I wish dfmt could do this for us, so that you develop with all the modules imported at the top, then run dfmt and it scopes all the imports and adds the selective import of symbols. I've been thinking about implementing a tool to do this myself, will get around to it someday. This is not formating (what DFMT is aimed to do) this is refactoring. You're right, I was thinking about patching Dscanner to do it, just mentioned dfmt here without thinking about that aspect.
Re: Lots of D code
On Wednesday, 23 December 2015 at 00:59:53 UTC, steven kladitis wrote: I have 843 programs written in D. 805 actually create an 32 bit exe in windows 10. I am running the latest D. Some just start to link and the linker disappears. Some just have issues I am not able figure out. I can attach the code and scripts I use to compile and run these. If anyone is willing to figure out why the 38 do not compile, I would appreciate code that works. The execute_bf_v2.d creates an exe that is small but takes about 1 hour to link on a 12 core processor with 64g of ram as 14tb of disk space. The rest link very fast. If anyone is interested, let me know. I would love to get the 38 working. Also there are a few that produce incorrect answers. The Generate_maze.d produces all but the last line of the maze. I added a line just for it. I do not understand why. All of the programs are from RosettaCode.org. The script to compile them generates a log file and you will see a few that the linker just stops No idea why. A few have 64K link errors no idea why. TIA, Steven what's up ? ;) Did you upload, so that bugs can be verified ?
Re: Must I compile on the target architecture?
On Friday, 25 December 2015 at 12:43:05 UTC, Jakob Jenkov wrote: Hi, just a quick question: If I write a program in D and I use Windows for development but want it to run on Linux, do I have to copy the source code to the target Linux machine and compile it there, to make an executable for that machine? What is the standard process for cross platform compilation? I'll also note that ldc supports cross-compilation out of the box. The only issue is that you'll need a linker to link the resulting objects, but you can usually install one in Cygwin. I believe gdc also supports some cross-compilation, though I've not tried it. Dmd isn't a cross-compiler, though it is capable of being turned into one: nobody has put in the remaining work yet.
Re: Multiple selective imports on one line
On Monday, 28 December 2015 at 14:16:36 UTC, Basile B. wrote: On Monday, 28 December 2015 at 14:09:30 UTC, Joakim wrote: I wish dfmt could do this for us, so that you develop with all the modules imported at the top, then run dfmt and it scopes all the imports and adds the selective import of symbols. I've been thinking about implementing a tool to do this myself, will get around to it someday. This is not formating (what DFMT is aimed to do) this is refactoring. oops, my answer could lead to a misunderstanding. I meant: This is not formating (what DFMT is aimed to do), but rather refactoring.
Re: Multiple selective imports on one line
On Monday, 28 December 2015 at 14:09:30 UTC, Joakim wrote: I wish dfmt could do this for us, so that you develop with all the modules imported at the top, then run dfmt and it scopes all the imports and adds the selective import of symbols. I've been thinking about implementing a tool to do this myself, will get around to it someday. This is not formating (what DFMT is aimed to do) this is refactoring.
Re: Is it possible to elegantly create a range over a binary heap?
On Monday, 28 December 2015 at 12:58:36 UTC, Gary Willoughby wrote: On Sunday, 27 December 2015 at 22:42:21 UTC, Ivan Kazmenko wrote: Or do you mean you want to print variables in order without modifying the array? Sounds like this would require at least N log N time and N additional memory for an N-element heap anyway (or quadratic time and constant memory). So, you can just copy the array and exhaust the copied binary heap, getting the same asymptotic complexity: N log N time and N additional memory. Thanks. I wanted to iterate through the range without modifying the original array but like you said the only way to do that is by copying the data which is not ideal. Hmm. On second thought: 1. You can find maximum, then second maximum, then third maximum and so on - each in constant memory and linear time. So, if performance is somehow not an issue, there is a way to do it @nogc but in N^2 operations. 2. If you output the whole array anyway, you may sort the array in place. A sorted array obeys the heap property, so subsequent heap operations will still work. 3. The tricky part is when we want to support parallel iteration over the same heap. If we look closely at one iteration of heapsort algorithm, it will perhaps become clear how to output values so that the array is a heap between any two consecutive output operations. At the very least, our heap struct over the array can just track which part of the array is already sorted, and work with it separately. 4. Reading and modifying the heap in parallel at the same time does not look possible anyway, so this is as far as we can get. Ivan Kazmenko.
Re: Multiple selective imports on one line
On Wednesday, 23 December 2015 at 10:51:52 UTC, earthfront wrote:
I'm using hackerpilot's excellent textadept plugin + DCD, Dfmt,
and Dscanner.
Upon saving files, it produces suggestions, much like warnings
from the compiler.
One suggestion is to use selective imports in local scopes. OK,
I'll do that.
Now I'm left with a smattering of lines which are just
selective imports from a single module:
void foo()
{
import std.exception:enforce;
import std.algorithm:array;
import std.algorithm.iteration:filter;
import std.functional:memoize;
//..Work..
}
What is the proper way to combine these into one line?
You really shouldn't have to do this by hand. I wish dfmt could
do this for us, so that you develop with all the modules imported
at the top, then run dfmt and it scopes all the imports and adds
the selective import of symbols. I've been thinking about
implementing a tool to do this myself, will get around to it
someday.
Re: How to config the GDC on linux target for ARM linux?
On Monday, 28 December 2015 at 13:17:04 UTC, FrankLike wrote:
About the first error ("...module wiringPi is in file
'wiringPi.d' which cannot be read...") - are you sure that the
dfiles are in "./wiringPi/WiringPi/"? The compiler reports
that it can't find them there.
You can try copying the WiringPi dfiles in the same folder as
"my.d".
About the second error - you need to verify that aa.so
actually has those symbols that the linker reports as
"undefined reference". You can do this with readlelf or nm.
For more info see
here:http://stackoverflow.com/questions/1237575/how-do-i-find-out-what-all-symbols-are-exported-from-a-shared-object
Thank you,but can you tell me that what is right way to use GDC
on linux,such as d refer a c lib.
for eacample:
a.d refer x.h x.c
how do you build it by GDC?
what's your steps?
How to config the GDC for the third part c libaries and d
files,such as PATH.
Thank you,waiting for your answer.
Re: How to config the GDC on linux target for ARM linux?
About the first error ("...module wiringPi is in file
'wiringPi.d' which cannot be read...") - are you sure that the
dfiles are in "./wiringPi/WiringPi/"? The compiler reports that
it can't find them there.
You can try copying the WiringPi dfiles in the same folder as
"my.d".
About the second error - you need to verify that aa.so actually
has those symbols that the linker reports as "undefined
reference". You can do this with readlelf or nm. For more info
see
here:http://stackoverflow.com/questions/1237575/how-do-i-find-out-what-all-symbols-are-exported-from-a-shared-object
Thank you,but can you tell me that what is right way to use GDC
on linux,such as d refer a c lib.
for eacample:
a.d refer x.h x.c
how do you build it by GDC?
what's your steps?
How to config the GDC for the thirty c lib and d files.
Thank you,waiting for your answer.
Re: How to use GDC to get .a file on Linux?
On Sunday, 27 December 2015 at 17:19:26 UTC, Mike Parker wrote: On Sunday, 27 December 2015 at 15:19:21 UTC, FrankLike wrote: Hi, Now I need get the .a file on Linux,target system is ARM. If you use gcc ,you will use the 'ar' to get .a file, but how to do by GDC ? And how to get the execute file by .a file and .d file? Thank you. Just use ar on the generated object files the same way you would if you were using gcc. Thank you,but the error is not ok.maybe some PATH is error,I don't how to set.
Re: are MRV as an optimization well known ?
On Monday, 28 December 2015 at 12:40:09 UTC, Basile B. wrote: I mean it's maybe "just" a special case of RVO, since tuples are processed as structs ? Also in the second version the stack size is modified by 78 bytes. Not when using MRV.
Re: Is it possible to elegantly create a range over a binary heap?
On Sunday, 27 December 2015 at 22:42:21 UTC, Ivan Kazmenko wrote: If you implement a struct with range primitives over it, you can use it as a range. See the second code example in std.container.binaryheap's docs at http://dlang.org/phobos/std_container_binaryheap.html#.BinaryHeap. Or do you mean you want to print variables in order without modifying the array? Sounds like this would require at least N log N time and N additional memory for an N-element heap anyway (or quadratic time and constant memory). So, you can just copy the array and exhaust the copied binary heap, getting the same asymptotic complexity: N log N time and N additional memory. Ivan Kazmenko. Thanks. I wanted to iterate through the range without modifying the original array but like you said the only way to do that is by copying the data which is not ideal. std.container.binaryheap looks like it implements the range interface and consumes the original during iteration. I'll probably do that too.
Re: are MRV as an optimization well known ?
I mean it's maybe "just" a special case of RVO, since tuples are processed as structs ?
are MRV as an optimization well known ?
While working on a framework, I've found that Multiple Return
Values (MRV) are clearly an optimization. I'de like to write a
small D blog post about this but I don't know If it's clever
enough or if it's a well know fact.
My base D material is this:
---
#!runnable-flags: -O -boundscheck=off -release
module runnable;
struct Get
{
static auto all()
{
import std.typecons;
return tuple(0.1f,0.2f,0.3f,0.4f);
}
static float a(){return 0.1f;}
static float b(){return 0.2f;}
static float c(){return 0.3f;}
static float d(){return 0.4f;}
}
void call(float a, float b, float c, float d){}
void tupYes()
{
call(Get.all[0..$]);
}
void tupNo()
{
call(Get.a, Get.b, Get.c, Get.d);
}
void main(string[] args)
{
import disassembler;
import std.stdio;
symbolTable.addModule!runnable;
writeln(prettyDisasm(&tupYes));
writeln;
writeln(prettyDisasm(&tupNo));
}
---
with my d beaengine bindings I get this (bin comes from DMD
backend) :
;--- SUB 0044C918h ---
; NAMED: tupYes
0044C918h push rbp
0044C919h mov rbp, rsp
0044C91Ch sub rsp, 20h
0044C920h call 0044C8A0h
0044C925h movsd qword ptr [rbp-20h], xmm0
0044C92Ah fld qword ptr [rbp-20h]
0044C92Dh movsd qword ptr [rbp-20h], xmm1
0044C932h fld qword ptr [rbp-20h]
0044C935h fstp qword ptr [rbp-08h]
0044C938h fstp qword ptr [rbp-10h]
0044C93Bh movss xmm3, dword ptr [rbp-10h]
0044C940h movss xmm2, dword ptr [rbp-0Ch]
0044C945h movss xmm1, dword ptr [rbp-08h]
0044C94Ah movss xmm0, dword ptr [rbp-04h]
0044C94Fh call 0044C910h ; (call)
0044C954h mov rsp, rbp
0044C957h pop rbp
0044C958h ret
;-
;--- SUB 0044C960h ---
; NAMED: tupNo
0044C960h sub rsp, 78h
0044C964h call 0044C8D0h
0044C969h movss dword ptr [rsp], xmm0
0044C96Eh movss xmm3, dword ptr [rsp]
0044C973h movapd dqword ptr [rsp+10h], xmm3
0044C979h call 0044C8E0h
0044C97Eh movss dword ptr [rsp], xmm0
0044C983h movss xmm2, dword ptr [rsp]
0044C988h movapd xmm3, dqword ptr [rsp+10h]
0044C98Eh movapd dqword ptr [rsp+20h], xmm2
0044C994h movapd dqword ptr [rsp+30h], xmm3
0044C99Ah call 0044C8F0h
0044C99Fh movss dword ptr [rsp], xmm0
0044C9A4h movss xmm1, dword ptr [rsp]
0044C9A9h movapd xmm2, dqword ptr [rsp+20h]
0044C9AFh movapd xmm3, dqword ptr [rsp+30h]
0044C9B5h movapd dqword ptr [rsp+40h], xmm1
0044C9BBh movapd dqword ptr [rsp+50h], xmm2
0044C9C1h movapd dqword ptr [rsp+60h], xmm3
0044C9C7h call 0044C900h
0044C9CCh movapd xmm1, dqword ptr [rsp+40h]
0044C9D2h movapd xmm2, dqword ptr [rsp+50h]
0044C9D8h movapd xmm3, dqword ptr [rsp+60h]
0044C9DEh call 0044C910h ; (call)
0044C9E3h add rsp, 78h
0044C9E7h ret
;-
Which clearly shows that using the MRV version is faster than
grabing each property, since in the second, version there's a
call for each parameter.
When I google "MRV optimization tuple", there's nothing, maybe
some garbages from the early 2000's...nothing else. I'd like your
mind before writing something possibly ridiculous.
Re: GTKD drawing area remains white even SourceRgb is changed
On 12/28/2015 12:29 AM, TheDGuy wrote: My code: http://dpaste.com/1X3E1HW i store colors in the accumulator-array and draw them via "cr.rectangle()". Because i have some problems with the code i set the SourceRgb-color to a constant value but if i execute the program, the window remains white. The values passed to setSourceRgb should be between 0 and 1. -- Mike Wey
Re: How to config the GDC on linux target for ARM linux?
On Monday, 28 December 2015 at 04:52:44 UTC, FrankLike wrote:
Now I build a project for ARM linux on ubuntu 15.04 ,but build
error.
I download the 'wiringPi' from http://wiringPi.com,convert the
*.h to *.d.then build the 'aa.so' file:
#! /bin/sh
dfiles="max31855.d max5322.d mcp23008.d mcp23016.d
mcp23016reg.d mcp23017.d mcp23s08.d mcp23s17.d mcp23x08.d
mcp23x0817.d mcp3002.d mcp3004.d mcp3422.d mcp4802.d pcf8574.d
pcf8591.d sn3218.d softPwm.d softServo.d softTone.d sr595.d
wiringPi.d wiringPiI2C.d wiringPiSPI.d wiringSerial.d
wiringShift.d wpiExtensions.d"
ofiles="drcSerial.o max31855.o max5322.o mcp23008.o mcp23016.o
mcp23017.o mcp23s08.o mcp23s17.o mcp3002.o mcp3004.o mcp3422.o
mcp4802.o pcf8574.o pcf8591.o piHiPri.o piThead.o sn3218.o
softPwm.o softServo.o softTone.o sr595.o wiringPi.o
wiringPiI2C.o wiringPiSPI.o wiringSerial.o wiringShift.o
wpiExtensions.o"
/opt/arm-unknown-linux-gnueabihf/bin/arm-linux-gnueabihf-gdc
-o aa.so $ofiels $dfiles -shared
---my.d
import wiringPi;
import std.stdio;
void main()
{
writeln("start");
wiringPiSetup();
pinMode(0,OUTPUT);
while(1)
{
digitalWrite(0,HIGH);
delay(500);
digitalWrite(0,LOW);
delay(500);
}
return;
}
-build the my execute file
/opt/arm-unknown-linux-gnueabihf/bin/arm-linux-gnueabihf-gdc
-o my my.d aa.so -I./wiringPi/WiringPi/
-now get the error:
my.d:1:8: error: module wiringPi is in file 'wiringPi.d' which
cannot be read
import wiringPi;
^
import path[0] =
/opt/arm-unknown-linux-gnueabihf/lib/gcc/arm-unknown-linux-gnueabihf/5.2.0/include/d
-I copy the *.d to
/opt/arm-unknown-linux-gnueabihf/lib/gcc/arm-unknown-linux-gnueabihf/5.2.0/include/d
it's ok ,but where is the file for config?
-get another error:
/tmp/cc7M1B9I.o: In function `_Dmain':
my.d:(.text+0x60): undefined reference to `wiringPiSetup'
my.d:(.text+0x6c): undefined reference to `pinMode'
my.d:(.text+0x84): undefined reference to `digitalWrite'
my.d:(.text+0x8c): undefined reference to `delay'
my.d:(.text+0x98): undefined reference to `digitalWrite'
my.d:(.text+0xa0): undefined reference to `delay'
collect2: error: ld returned 1 exit status
-end
I'm not known the GDC config file ,and maybe I use the error
build .
Who can help me?
thank you.
About the first error ("...module wiringPi is in file
'wiringPi.d' which cannot be read...") - are you sure that the
dfiles are in "./wiringPi/WiringPi/"? The compiler reports that
it can't find them there.
You can try copying the WiringPi dfiles in the same folder as
"my.d".
About the second error - you need to verify that aa.so actually
has those symbols that the linker reports as "undefined
reference". You can do this with readlelf or nm. For more info
see
here:http://stackoverflow.com/questions/1237575/how-do-i-find-out-what-all-symbols-are-exported-from-a-shared-object
