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digitalmars.D.announce - This Week in D: Issue #4

reply "Adam D. Ruppe" <destructionator gmail.com> writes:
I can't believe it, but yet another week has already passed, so 
up late to release this again!

http://arsdnet.net/this-week-in-d/feb-01.html

Early bird registration open for DConf, 2015 Vision released, GUI 
and Windows development on the forums.

Today's tip is about class destructors, and Project Spotlight 
makes a return to introduce simpledisplay.d, in the first in what 
will become a series that walks us through making a bit of a 
little game in D. (Expect this to not be each week, it takes me a 
long time to write the project spotlight and I've been very busy 
lately and expect to continue being busy in the coming weeks. 
I'll probably try to do it every other week rather than every 
week.)

http://www.reddit.com/r/programming/comments/2uhgzr/this_week_in_d_2015_vision_released_tip_on/

https://twitter.com/adamdruppe/status/562112301248290816
Feb 01 2015
next sibling parent reply "Szymon Gatner" <noemail gmail.com> writes:
On Monday, 2 February 2015 at 04:57:10 UTC, Adam D. Ruppe wrote:

 I can't believe it, but yet another week has already passed, so 
 up late to release this again!

 http://arsdnet.net/this-week-in-d/feb-01.html

 Early bird registration open for DConf, 2015 Vision released, 
 GUI and Windows development on the forums.

 Today's tip is about class destructors, and Project Spotlight 
 makes a return to introduce simpledisplay.d, in the first in 
 what will become a series that walks us through making a bit of 
 a little game in D. (Expect this to not be each week, it takes 
 me a long time to write the project spotlight and I've been 
 very busy lately and expect to continue being busy in the 
 coming weeks. I'll probably try to do it every other week 
 rather than every week.)

 http://www.reddit.com/r/programming/comments/2uhgzr/this_week_in_d_2015_vision_released_tip_on/

 https://twitter.com/adamdruppe/status/562112301248290816


Very nice, once again.

Looking forward to next part of simpledisplay tutorial. Goal 
should be to make it run on iOS in 2015 ;)
Feb 02 2015
parent "Adam D. Ruppe" <destructionator gmail.com> writes:
On Monday, 2 February 2015 at 12:39:18 UTC, Szymon Gatner wrote:

 Looking forward to next part of simpledisplay tutorial. Goal 
 should be to make it run on iOS in 2015 ;)


I don't use any Apple hardware, so someone else would have to own 
that part of the code...
Feb 02 2015
prev sibling next sibling parent reply FG <home fgda.pl> writes:
On 2015-02-02 at 05:57, Adam D. Ruppe wrote:

 I can't believe it, but yet another week has already passed, so up late to
release this again!

 http://arsdnet.net/this-week-in-d/feb-01.html


It's great! I have to wonder though, why have you chosen this naming
convention: jan-12, jan-18, jan-25, feb-01, ... instead of just 1, 2, ... ?
That would make navigation between issues much easier, even without the page
with a list of all issues (which I am unable to find).  :)
Feb 02 2015
parent "Adam D. Ruppe" <destructionator gmail.com> writes:
On Monday, 2 February 2015 at 13:27:33 UTC, FG wrote:

 That would make navigation between issues much easier, even 
 without the page with a list of all issues (which I am unable 
 to find).  :)


The naming convention was probably a mistake, if nothing else,
it'll get confusing next year.

But you can get a list of all of them with the rss link

http://arsdnet.net/this-week-in-d/twid.rss
Feb 02 2015
prev sibling next sibling parent reply "Jesse Phillips" <Jesse.K.Phillips+D gmail.com> writes:
On Monday, 2 February 2015 at 04:57:10 UTC, Adam D. Ruppe wrote:

 I can't believe it, but yet another week has already passed, so 
 up late to release this again!

 http://arsdnet.net/this-week-in-d/feb-01.html

 Early bird registration open for DConf, 2015 Vision released, 
 GUI and Windows development on the forums.

 Today's tip is about class destructors, and Project Spotlight 
 makes a return to introduce simpledisplay.d, in the first in 
 what will become a series that walks us through making a bit of 
 a little game in D. (Expect this to not be each week, it takes 
 me a long time to write the project spotlight and I've been 
 very busy lately and expect to continue being busy in the 
 coming weeks. I'll probably try to do it every other week 
 rather than every week.)

 http://www.reddit.com/r/programming/comments/2uhgzr/this_week_in_d_2015_vision_released_tip_on/

 https://twitter.com/adamdruppe/status/562112301248290816


I'm not sure if every week needs a post to reddit. You're likely 
to increase the number of people who feel it is spam:
https://www.reddit.com/r/programming/comments/2uhgzr/this_week_in_d_2015_vision_released_tip_on/co8v9y5

Besides, there may be weeks we want to obtain more attraction and 
that can be hard to do if every week is always posted.

Remember, those who have found "this week" interested are either 
following it with RSS, this forum, or /r/d_language
Feb 02 2015
next sibling parent "Adam D. Ruppe" <destructionator gmail.com> writes:
On Monday, 2 February 2015 at 19:52:02 UTC, Jesse Phillips wrote:

 I'm not sure if every week needs a post to reddit. You're 
 likely to increase the number of people who feel it is spam:


Maybe, I kinda think it might be a bit much sometimes too, but on 
the other hand, it is just once a week.


 Besides, there may be weeks we want to obtain more attraction 
 and that can be hard to do if every week is always posted.


that's a good point


 Remember, those who have found "this week" interested are 
 either following it with RSS, this forum, or /r/d_language



I'll let off it on reddit next week, we'll see.
Feb 02 2015
prev sibling parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
Another bit that confuses me: "While it's not an official and 
hard rule, it is still against reddiquette to post your own 
content repeatedly and exclusively."

If you're not posting original content, what are you posting? 
"hey guys i found this really great link on reddit..."

idk, maybe I don't get out enough on the Internet.
Feb 02 2015
parent ketmar <ketmar ketmar.no-ip.org> writes:
On Tue, 03 Feb 2015 02:57:46 +0000, Adam D. Ruppe wrote:


 If you're not posting original content, what are you posting?
 "hey guys i found this really great link on reddit..."


you got it! reddit is a bunch of freaks who are browsing internets the=20
whole day and posting links to "content". so they naturally don't like=20
people who can actually *make* that content.=
Feb 03 2015
prev sibling next sibling parent reply "Ulrich =?UTF-8?B?S8O8dHRsZXIi?= <kuettler gmail.com> writes:
On Monday, 2 February 2015 at 04:57:10 UTC, Adam D. Ruppe wrote:

 I can't believe it, but yet another week has already passed, so 
 up late to release this again!


Very nice! Thank you.

Unfortunately, your project Spotlight does not work exactly as 
advertised, since simpledisplay imports arsd.color. Just to let 
you know.
Feb 02 2015
parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Monday, 2 February 2015 at 23:11:22 UTC, Ulrich Küttler wrote:

 Unfortunately, your project Spotlight does not work exactly as 
 advertised, since simpledisplay imports arsd.color. Just to let 
 you know.


I mentioned that, which part specifically didn't work for you?
Feb 02 2015
parent reply "Ulrich =?UTF-8?B?S8O8dHRsZXIi?= <kuettler gmail.com> writes:
On Tuesday, 3 February 2015 at 02:29:23 UTC, Adam D. Ruppe wrote:

 On Monday, 2 February 2015 at 23:11:22 UTC, Ulrich Küttler 
 wrote:

 Unfortunately, your project Spotlight does not work exactly as 
 advertised, since simpledisplay imports arsd.color. Just to 
 let you know.


 I mentioned that, which part specifically didn't work for you?


What I got is

$ dmd window.d simpledisplay.d color.d
simpledisplay.d(550): Error: module color is in file 
'arsd/color.d' which cannot be read
import path[0] = /usr/include/dmd/phobos
import path[1] = /usr/include/dmd/druntime/import

This is dmd v2.066.1. But then, it might be my machine. Apologies 
if this is unhelpful.
Feb 03 2015
next sibling parent Mike Parker <aldacron gmail.com> writes:
On 2/3/2015 6:23 PM, "Ulrich =?UTF-8?B?S8O8dHRsZXIi?= 
<kuettler gmail.com>" wrote:

 On Tuesday, 3 February 2015 at 02:29:23 UTC, Adam D. Ruppe wrote:

 On Monday, 2 February 2015 at 23:11:22 UTC, Ulrich Küttler wrote:

 Unfortunately, your project Spotlight does not work exactly as
 advertised, since simpledisplay imports arsd.color. Just to let you
 know.


 I mentioned that, which part specifically didn't work for you?


 What I got is

 $ dmd window.d simpledisplay.d color.d
 simpledisplay.d(550): Error: module color is in file 'arsd/color.d'
 which cannot be read
 import path[0] = /usr/include/dmd/phobos
 import path[1] = /usr/include/dmd/druntime/import

 This is dmd v2.066.1. But then, it might be my machine. Apologies if
 this is unhelpful.


You might want to try:
cd ..
dmd -Iarsd arsd/window.d arsd/simpledisplay.d arsd/color.d
Feb 03 2015
prev sibling parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Tuesday, 3 February 2015 at 09:23:43 UTC, Ulrich Küttler wrote:

 $ dmd window.d simpledisplay.d color.d
 simpledisplay.d(550): Error: module color is in file


Huh, that should work, did you remember to download color.d to 
the same directory too?
Feb 03 2015
parent "Ulrich =?UTF-8?B?S8O8dHRsZXIi?= <kuettler gmail.com> writes:
On Tuesday, 3 February 2015 at 14:34:13 UTC, Adam D. Ruppe wrote:

 On Tuesday, 3 February 2015 at 09:23:43 UTC, Ulrich Küttler 
 wrote:

 $ dmd window.d simpledisplay.d color.d
 simpledisplay.d(550): Error: module color is in file


 Huh, that should work, did you remember to download color.d to 
 the same directory too?


Yes, I did. Now, I am confused about this, since it did not work 
yesterday (I still have the terminal output) but it does now. 
Here is what I did:

$ cd arsd
$ git pull
$ dmd window.d simpledisplay.d color.d
simpledisplay.d(550): Error: module color is in file

$ mkdir arsd
$ cp color.d arsd/

$ rm -rf arsd


This is an error on my part, most definitely.

However, rdmd still refuses to work

$ rdmd window.d
simpledisplay.d(550): Error: module color is in file 
'arsd/color.d' which cannot be read
Feb 03 2015
prev sibling next sibling parent reply "Jeremy DeHaan" <dehaan.jeremiah gmail.com> writes:
On Monday, 2 February 2015 at 04:57:10 UTC, Adam D. Ruppe wrote:

 I can't believe it, but yet another week has already passed, so 
 up late to release this again!

 http://arsdnet.net/this-week-in-d/feb-01.html

 Early bird registration open for DConf, 2015 Vision released, 
 GUI and Windows development on the forums.

 Today's tip is about class destructors, and Project Spotlight 
 makes a return to introduce simpledisplay.d, in the first in 
 what will become a series that walks us through making a bit of 
 a little game in D. (Expect this to not be each week, it takes 
 me a long time to write the project spotlight and I've been 
 very busy lately and expect to continue being busy in the 
 coming weeks. I'll probably try to do it every other week 
 rather than every week.)

 http://www.reddit.com/r/programming/comments/2uhgzr/this_week_in_d_2015_vision_released_tip_on/

 https://twitter.com/adamdruppe/status/562112301248290816


I've never liked the phrasing about destructors. Yes, they are 
not guaranteed to run, but isn't that only during run time? They 
are going to be called at the application exit to ensure 
everything is cleaned up.
Feb 02 2015
next sibling parent ketmar <ketmar ketmar.no-ip.org> writes:
On Tue, 03 Feb 2015 05:53:26 +0000, Jeremy DeHaan wrote:


 I've never liked the phrasing about destructors. Yes, they are not
 guaranteed to run, but isn't that only during run time? They are going
 to be called at the application exit to ensure everything is cleaned up.


nope, it's not guaranteed too. runtime is free to just kill itself=20
without running any destructors.=
Feb 03 2015
prev sibling next sibling parent reply "eles" <eles eles.com> writes:
On Tuesday, 3 February 2015 at 05:53:30 UTC, Jeremy DeHaan wrote:

 On Monday, 2 February 2015 at 04:57:10 UTC, Adam D. Ruppe wrote:



 I've never liked the phrasing about destructors. Yes, they are 
 not guaranteed to run, but isn't that only during run time? 
 They are going to be called at the application exit to ensure 
 everything is cleaned up.


I would rather go with the term "finalizers" for those in D.

A maybe useful link that quite clearly defines some concepts:

http://sanjaysainitech.blogspot.com/2007/06/difference-between-destructor-dispose.html
Feb 03 2015
parent "eles" <eles eles.com> writes:
On Tuesday, 3 February 2015 at 09:08:07 UTC, eles wrote:

 On Tuesday, 3 February 2015 at 05:53:30 UTC, Jeremy DeHaan 
 wrote:

 On Monday, 2 February 2015 at 04:57:10 UTC, Adam D. Ruppe 
 wrote:





 A maybe useful link that quite clearly defines some concepts:

 http://sanjaysainitech.blogspot.com/2007/06/difference-between-destructor-dispose.html


And this:

http://stackoverflow.com/a/8299222/1284631
Feb 03 2015
prev sibling parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Tuesday, 3 February 2015 at 05:53:30 UTC, Jeremy DeHaan wrote:

 Yes, they are not guaranteed to run, but isn't that only during 
 run time? They are going to be called at the application exit 
 to ensure everything is cleaned up.


If the application exits somewhat cleanly (through return from 
main or even a thrown exception in D), it will run, though I'm 
not sure if that's guaranteed or just an implementation 
convenience.

However, if the application exits differently, they won't 
necessarily be run. For example, a Unix signal terminating the 
process skips all the D cleanup tasks.

Often, this doesn't matter because the operating system will 
clean up a lot of resources anyway. But if you are using 
something like shared memory with another process, or expect a 
file to be written to in a destructor, you'll find those things 
never happen.

I had this problem once in simpledisplay.d. When it died by 
ctrl+c, the unix SIGINT was sent, and that skipped the 
destructors for shared images. As a result, the system eventually 
ran out of shared handles and most GUI programs wouldn't start up 
anymore until I cleaned it up some other way.
Feb 03 2015
parent "Jeremy DeHaan" <dehaan.jeremiah gmail.com> writes:
On Tuesday, 3 February 2015 at 14:36:58 UTC, Adam D. Ruppe wrote:

 On Tuesday, 3 February 2015 at 05:53:30 UTC, Jeremy DeHaan 
 wrote:

 Yes, they are not guaranteed to run, but isn't that only 
 during run time? They are going to be called at the 
 application exit to ensure everything is cleaned up.


 If the application exits somewhat cleanly (through return from 
 main or even a thrown exception in D), it will run, though I'm 
 not sure if that's guaranteed or just an implementation 
 convenience.

 However, if the application exits differently, they won't 
 necessarily be run. For example, a Unix signal terminating the 
 process skips all the D cleanup tasks.

 Often, this doesn't matter because the operating system will 
 clean up a lot of resources anyway. But if you are using 
 something like shared memory with another process, or expect a 
 file to be written to in a destructor, you'll find those things 
 never happen.

 I had this problem once in simpledisplay.d. When it died by 
 ctrl+c, the unix SIGINT was sent, and that skipped the 
 destructors for shared images. As a result, the system 
 eventually ran out of shared handles and most GUI programs 
 wouldn't start up anymore until I cleaned it up some other way.


Yikes, that's good to know.

Still, I feel like it could be worded a little better in the docs
and anywhere else they are talked about. I feel like it is just
far too ambiguous.
Feb 03 2015
prev sibling next sibling parent reply "wobbles" <grogan.colin gmail.com> writes:
On Monday, 2 February 2015 at 04:57:10 UTC, Adam D. Ruppe wrote:

 I can't believe it, but yet another week has already passed, so 
 up late to release this again!

 http://arsdnet.net/this-week-in-d/feb-01.html

 Early bird registration open for DConf, 2015 Vision released, 
 GUI and Windows development on the forums.

 Today's tip is about class destructors, and Project Spotlight 
 makes a return to introduce simpledisplay.d, in the first in 
 what will become a series that walks us through making a bit of 
 a little game in D. (Expect this to not be each week, it takes 
 me a long time to write the project spotlight and I've been 
 very busy lately and expect to continue being busy in the 
 coming weeks. I'll probably try to do it every other week 
 rather than every week.)

 http://www.reddit.com/r/programming/comments/2uhgzr/this_week_in_d_2015_vision_released_tip_on/

 https://twitter.com/adamdruppe/status/562112301248290816


Thanks adam. The simpledisplay.d stuff is very interesting. Must 
play around with it soon!

p.s. Hope the search for your dog went well.
Feb 04 2015
parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Wednesday, 4 February 2015 at 13:50:54 UTC, wobbles wrote:

 p.s. Hope the search for your dog went well.


Yes, we found her after she was outside for a week. Lost about 
13% of her body weight and had dehydration and hypothermia, but 
the vet was able to treat it and it looks like she'll make a full 
recovery over the next month as she puts the weight back on.
Feb 04 2015
next sibling parent Iain Buclaw via Digitalmars-d-announce writes:
On 4 February 2015 at 14:14, Adam D. Ruppe via Digitalmars-d-announce
<digitalmars-d-announce puremagic.com> wrote:

 On Wednesday, 4 February 2015 at 13:50:54 UTC, wobbles wrote:

 p.s. Hope the search for your dog went well.



 Yes, we found her after she was outside for a week. Lost about 13% of her
 body weight and had dehydration and hypothermia, but the vet was able to
 treat it and it looks like she'll make a full recovery over the next month
 as she puts the weight back on.


This is the best news I've heard all week.

Iain.
Feb 04 2015
prev sibling next sibling parent reply "eles" <eles eles.com> writes:
On Wednesday, 4 February 2015 at 14:14:27 UTC, Adam D. Ruppe
wrote:

 On Wednesday, 4 February 2015 at 13:50:54 UTC, wobbles wrote:



 the vet was able to treat it and it looks like she'll make a 
 full recovery over the next month as she puts the weight back 
 on.


Wow. She is a fighter. Glad to hear that everything is OK now.
Feb 04 2015
parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Wednesday, 4 February 2015 at 14:34:18 UTC, eles wrote:

 Wow. She is a fighter. Glad to hear that everything is OK now.


Aye, I really don't know how she survived some of those nights, 
below zero temperatures (Fahrenheit - so actually cold) with 
nasty wind from that storm that hit the eastern US last week. But 
she did.
Feb 04 2015
parent reply "Dominikus Dittes Scherkl" writes:
Feb 11 2015
parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Wednesday, 11 February 2015 at 11:21:46 UTC, Dominikus Dittes 
Scherkl wrote:




No, I did; I was sick most of last week and decided to skip it, 
just going to bed instead on sunday night.
Feb 11 2015
next sibling parent Andrei Alexandrescu <SeeWebsiteForEmail erdani.org> writes:
On 2/11/15 6:32 AM, Adam D. Ruppe wrote:

 On Wednesday, 11 February 2015 at 11:21:46 UTC, Dominikus Dittes Scherkl
 wrote:




 No, I did; I was sick most of last week and decided to skip it, just
 going to bed instead on sunday night.


I have since learned you're doing better - great! Could you please post 
to this group if special circumstances cause a lapse in the newsletter. 
Also, if that happens it would be great if the following week's 
newsletter covers both weeks. Thanks! -- Andrei
Feb 11 2015
prev sibling next sibling parent "weaselcat" <weaselcat gmail.com> writes:
On Wednesday, 11 February 2015 at 14:32:46 UTC, Adam D. Ruppe 
wrote:

 On Wednesday, 11 February 2015 at 11:21:46 UTC, Dominikus 
 Dittes Scherkl wrote:




 No, I did; I was sick most of last week and decided to skip it, 
 just going to bed instead on sunday night.


Hope you feel better, health is more important than a blog update 
: )
Feb 11 2015
prev sibling parent reply "Dominikus Dittes Scherkl" writes:
On Wednesday, 11 February 2015 at 14:32:46 UTC, Adam D. Ruppe 
wrote:

 On Wednesday, 11 February 2015 at 11:21:46 UTC, Dominikus 
 Dittes Scherkl wrote:




 No, I did; I was sick most of last week and decided to skip it, 
 just going to bed instead on sunday night.


Sorry, I didn't wanted to create any pressure.
Of course health is more important.

Gute Besserung!
Feb 12 2015
parent "Foo" <Foo test.de> writes:
On Thursday, 12 February 2015 at 10:06:43 UTC, Dominikus Dittes 
Scherkl wrote:

 On Wednesday, 11 February 2015 at 14:32:46 UTC, Adam D. Ruppe 
 wrote:

 On Wednesday, 11 February 2015 at 11:21:46 UTC, Dominikus 
 Dittes Scherkl wrote:




 No, I did; I was sick most of last week and decided to skip 
 it, just going to bed instead on sunday night.


 Sorry, I didn't wanted to create any pressure.
 Of course health is more important.

 Gute Besserung!


Always nice to see other german people here. :)
Moin.
Feb 12 2015
prev sibling next sibling parent "wobbles" <grogan.colin gmail.com> writes:
On Wednesday, 4 February 2015 at 14:14:27 UTC, Adam D. Ruppe 
wrote:

 On Wednesday, 4 February 2015 at 13:50:54 UTC, wobbles wrote:

 p.s. Hope the search for your dog went well.


 Yes, we found her after she was outside for a week. Lost about 
 13% of her body weight and had dehydration and hypothermia, but 
 the vet was able to treat it and it looks like she'll make a 
 full recovery over the next month as she puts the weight back 
 on.


Great, very glad there was a happy ending!
Feb 04 2015
prev sibling parent ketmar <ketmar ketmar.no-ip.org> writes:
On Wed, 04 Feb 2015 14:14:24 +0000, Adam D. Ruppe wrote:


 On Wednesday, 4 February 2015 at 13:50:54 UTC, wobbles wrote:

 p.s. Hope the search for your dog went well.


=20
 Yes, we found her after she was outside for a week. Lost about 13% of
 her body weight and had dehydration and hypothermia, but the vet was
 able to treat it and it looks like she'll make a full recovery over the
 next month as she puts the weight back on.


it's great that she's at home now.=
Feb 04 2015
prev sibling next sibling parent ketmar <ketmar ketmar.no-ip.org> writes:
On Mon, 02 Feb 2015 04:57:09 +0000, Adam D. Ruppe wrote:


 I can't believe it, but yet another week has already passed, so up late
 to release this again!


OT: just used your `arsd.cgi` to write a simple web-service (internal=20
service using to decode some binary files to text). it took me about ten=20
minutes, including reading comments in "cgi.d", and works like a charm.=20
sure, it's not ready for "big internets", but it solves my task perfectly.

thank you.=
Feb 04 2015
prev sibling parent "bearophile" <bearophileHUGS lycos.com> writes:
It it a good idea to keep a weekly rhythm? Perhaps one issue 
every two, three or even four weeks is better at this stage of 
the D life.

Bye,
bearophile
Feb 11 2015