[go-nuts] ActiveState Komodo IDE Now Free

[JuciÊ Andrade]

https://www.i-programmer.info/news/90-tools/13411-activestate-komodo-ide-now-free.html

"There will no longer be a fee for Komodo, the multi-language IDE for 
Python, PHP, JavaScript, HTML5, CSS, Node.js, Golang, Ruby, Perl, and a 
variety of other languages and frameworks ... The only thing required is 
opening an account at ActiveState to register your copy."

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[go-nuts] Re: Go mindshare is low & ~flat, per Google Trends

[JuciÊ Andrade]

Change is needed to keep people interest. In particular, to keep highly 
capable people big challenges are needed.

"After ~12.5 years at Google and ~10 years working on Go (#golang 
), it's time for me to do something new. Tomorrow is 
my last day at Google." - Brad Fitzpatrick 

https://twitter.com/bradfitz/status/1221843479950585857

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[go-nuts] Re: Go mindshare is low & ~flat, per Google Trends

[JuciÊ Andrade]

Liam has a point. Go is not attracting attention as it used to do. Go 
ceased to generate news.

Other projects attracts attention by aggregating new features often. So 
there is always a flux of news about the project, news that attracts 
interest, that bring new users to the project. However, that approach 
ultimately leads to disaster. Each new wave of developers want to employ 
the latest and greatest features and after some years you end up with a 
nightmare in form of millions of lines of source code using a plethora of 
competing techniques.

The minimalism in Go is its strength, but few people are mature enough to 
appreciate that. So what now?

I think we need to add a killer feature now and then. Not so often as to 
create a nightmare, but only a few, very sparse. Such a feature would be 
something that is very desirable but utterly difficult to achieve, 
something that only a selected group of the best professionals in the world 
backed by one of the biggest tech companies in the world could make.

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[go-nuts] Re: Ajuda sobre logica

[JuciÊ Andrade]

Talvez voce prefira postar suas duvidas aqui:

https://groups.google.com/forum/#!forum/golang-brasil

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Re: [go-nuts] Re: Where is the middle of Brazil?

[JuciÊ Andrade]

A Brazilian friend from the C++ group accepted your challenge and found the 
population center. It's here:

https://goo.gl/maps/uNSA95Ej4PYLzvgp7

On Saturday, December 7, 2019 at 8:12:28 PM UTC-3, Marcin Romaszewicz wrote:
>
> As a bonus challenge, try to compute the population center of Brazil :)
>
>

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Re: [go-nuts] Re: Where is the middle of Brazil?

[JuciÊ Andrade]

Yes, I understand it is impossible to chose the "correct way" of 
determining the center. This week I learnt there are at least a handful of 
places claiming to be the "center" of Brazil, with monuments and whatnot.

The search for a solution is an interesting endeavor per se. Programming is 
supposed to be fun after all.

Several things amazed me:
. the variety of proposed methods. A guy in Germany collected the position 
and area of every county in Brazil and proceeded with the math. Another guy 
proposed to draw a map on carton paper, cut it and find the center of 
gravity. Etc;
. the rich geographical data available for anyone to use;
. the language packages and libraries to handle geographical data;
. the enviable knowledge some people have on the matter;
. the willing to learn a new topic just for the sake of it;
. the unwillingness to learn a new topic just for the sake of it;

Anyway, it was a delightful experience. Thanks

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Re: [go-nuts] Re: Where is the middle of Brazil?

[JuciÊ Andrade]

If one wants to improve precision she may use a bigger map.
The resulting position would be the same, only more accurate.

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Re: [go-nuts] Re: Where is the middle of Brazil?

[JuciÊ Andrade]

Hi, Jan.

As you can imagine, there are several ways to define "middle". So, to get 
rid of the ambiguity I picked this one: "the position would divide Brazil 
so that half of our country area would be to the north and half to the 
south, while half would be to the west and half to the east."

On Saturday, December 7, 2019 at 11:30:42 AM UTC-3, Jan Mercl wrote:

> This method resembles determining the CG, but only very approximately. 
> How is your "middle" actually defined? 
>

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[go-nuts] Re: Where is the middle of Brazil?

[JuciÊ Andrade]

I am pretty sure there are other ways to do it, but the method I devised is 
simple and produces a good enough result. If somebody can put a hole in my 
reasoning, feel free to do so.

All the info I need are in a map, OK? So I downloaded a map from the 
Internet. I choose a map that shows only the territory I am interested in 
and nothing else:

http://www.temasactuales.com/temasblog/wp-content/Images/mapa_do_brasil.gif

The method goes like this: I scan the image counting every pixel that is 
not background color. It gives my territory area. Then I divide that by 2 
to obtain half the area.

I scan the image again from top to bottom, stopping when I reach half the 
area. I draw a horizontal line dividing north and south. Finally I scan the 
image from left to right stopping at half area and draw a vertical line 
dividing east from west. The point I am interested in is in the 
intersection of those two lines.

My Go program has some small optimizations so that I don't have to actually 
scan the image so many times, but the idea is the same.

The resulting image:
https://drive.google.com/file/d/163K79BWKRTmI3BOIMUsPf7ziISwt-R3z/view?usp=sharing

The github repo:
https://github.com/jucie/geomedian

The file I used to calculate the digest in the first message is attached.

Thank you, my friends, I hope you enjoyed the challenge.

MD5 SHA-1

--

4c021557d057327f2977dd739b67da6b b3913154ca0c5f48f3555c536fc987322169e607 
ihavetheanswer.txt

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The geographic median of Brazil is in Para's south region, as can be verified 
using my program geomedian, available in github.

[go-nuts] Re: Where is the middle of Brazil?

[JuciÊ Andrade]

OK, people. It has been nearly a week since I left the programming 
challenge here, so let me show my approach.

First, let me tell you guys I sent the aforementioned challenge to a few 
programming groups and it went like this:
. some very knowledgeable people in this group tried to find a solution. 
That made me proud, as I told you;
. brazilian C++ group: a bunch of guys fiercely tried to solve the problem 
and a few succeeded to some extent;
. brazilian Go group: too small a group, people prefer interacting thru 
Slack. So, no responses;
. Rust official users group right away classified my message as "off 
topic", hide it, and not so politely said I should "post it elsewhere";

My next message will show the answer. So, if you wanna keep trying please 
stop here.


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Re: [go-nuts] Where is the middle of Brazil?

[JuciÊ Andrade]

Michael, let me tell you I feel very much honored because you answered my
question right away. Thank you very much. To be honest, that was not
exactly the position I was after. Maybe my question should have been more
clear. To be effectively in the middle of our territory, the position would
divide Brazil so that half of our country area would be to the north and
half to the south, while half would be to the west and half to the east.

Andrew, the solution doesn't involve cracking the digest at all. As I said
above, maybe I should have been clearer in my question. That digest is only
to prove I already have the solution. In case someone challenges me to show
it I can send to this person a file that produced the digest.

Rodolfo, I am not crazy, man, LOL. That is a programming challenge.

Thank you my friends for your attention. Have a nice day.

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[go-nuts] Where is the middle of Brazil?

[JuciÊ Andrade]

When I was a kid I asked my teacher why my country capital had been moved 
from Rio de Janeiro to Brasilia. She said the reason was Brasilia is right 
in the middle of our territory, that way our president could take care of 
our entire country more effectively. I accepted that answer. Many years 
later, contemplating a map, I doubted Brasilia is right in the middle.


Where is the middle of Brazil?


MD5 SHA-1

--

4c021557d057327f2977dd739b67da6b b3913154ca0c5f48f3555c536fc987322169e607 
ihavetheanswer.txt

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[go-nuts] Re: ? How restrict usage of packages ?

[JuciÊ Andrade]

Add a script to your users continuous integration tool or even to their 
source control management.
Whenever software is compiled or commited your script will search for 
imports in Go source files.
If your script finds a forbidden package it should flag an error with a 
friendly message like this:

"You are NOT supposed to write full blown Go, but only Daniel's NearlyGo, 
that nowadays disallows importing package X, for your own good. In case you 
get angry please take out your pants and jump vigorously stepping on it 
again and again until you have your rage diminished somewhat. Only then, 
contact Daniel."


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[go-nuts] Re: Golang Issue reading/writing Windows Defender Registry

[JuciÊ Andrade]

If you have Delve installed it allows you to execute step-by-step inside Go 
library code.
Then you will know exactly what happens and will have access to the Windows 
error code.

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[go-nuts] Re: Golang Issue reading/writing Windows Defender Registry

[JuciÊ Andrade]

Microsoft Windows [Version 10.0.18362.476]

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[go-nuts] Re: Golang Issue reading/writing Windows Defender Registry

[JuciÊ Andrade]

Hi, Kyhle.

I don't know if that is good news for you, but in my computer your Go code 
works exactly as you expect. Output:

Value: C:\ProgramData\Microsoft\Windows Defender\platform\4.18.1909.6-0


$ go version
go version go1.13.4 windows/amd64



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Re: [go-nuts] Re: [ANN] A BASIC compiler

[JuciÊ Andrade]

Today I learned a fellow programmer did just that! His name is Everton
Marques.

https://github.com/udhos/basgo

On Sat, Oct 26, 2019 at 12:33 PM Robert Engels 
wrote:

> Why not generate Go?
>
>

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Re: [go-nuts] Re: [ANN] A BASIC compiler

[JuciÊ Andrade]

Feel free to classify the tool anyway you like, Anca.

I don't buy the distinction between "compiler" and "transpiler" because 
it's the same thing. They read code in some language and generates code in 
some language.

I picked C for output because it is utterly portable and everyone could 
enjoy the games. Any other output format would exclude someone.

On Saturday, October 26, 2019 at 11:30:35 AM UTC-3, Anca Emanuel wrote:
>
> Ah so it is an transpiller: 
> https://en.wikipedia.org/wiki/Source-to-source_compiler 
> 
>
>

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[go-nuts] Re: [ANN] A BASIC compiler

[JuciÊ Andrade]

I just edited the project README to clarify this point. This tool generates 
C code that you submits to the C compiler for your particular platform.

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[go-nuts] Re: [ANN] A BASIC compiler

[JuciÊ Andrade]

Hi, Anca.

The compiler proper doesn't use C code, generated code does, it has 
references to some support functions.
Those support functions are declared in basiclib.h and defined in 
basiclib.c .

On Saturday, October 26, 2019 at 10:32:24 AM UTC-3, Anca Emanuel wrote:
>
> Why do you need C in the source code ?
>

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[go-nuts] [ANN] A BASIC compiler

[JuciÊ Andrade]

https://github.com/jucie/basic

A compiler for BASIC programming language.


This tool understands what is in David H. Ahl's own words "the gold 
standard of microcomputer BASICs: MITS Altair 8K BASIC, Rev. 4.0 (ix)." It 
has been tested against every program from Ahl's bestseller "BASIC Computer 
Games".

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Re: [go-nuts] Channels may not be the best solution in Go

[JuciÊ Andrade]

Burak, feel free to correct me if I am wrong, but now I think I understood 
the heart of the matter:

Your approach to software development is different from mine. Nothing wrong 
with that.

. you normally write sequential code, and uses concurrent code where it 
fits best. That is fine.
. I use to write concurrent code, and use sequential code where it fits 
best. That is fine as well.

Concurrency mechanisms in Go are so easy to use that it allows me to take 
that approach.
With a little bit of caution to not create a big ball of mud[1], you can 
write clean concurrent code.
You said there is a synchronization overhead when a program uses channels. 
That is true.
On the other hand, when we divide the load among several cores we end up 
with a net gain.
Depending on the task at hand the difference can be staggering! I mean 15x 
faster or more!

If we consider that nearly all CPU is multicore these days [2], we will 
soon conclude that writing concurrent code even for simple tasks makes 
sense, in order to leverage that processing power.

Your concurrent code will run keep running well in newer CPUs. Your single 
threaded code won't.

Again, nothing wrong with your approach, ok? To each its own.

[1] http://laputan.org/mud/
[2] https://www.amd.com/en/products/cpu/amd-epyc-7742




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Re: [go-nuts] Channels may not be the best solution in Go

[JuciÊ Andrade]

On Thursday, October 3, 2019 at 10:47:27 AM UTC-3, burak serdar wrote:
>
> On Thu, Oct 3, 2019 at 6:18 AM JuciÊ Andrade  > wrote: 
> > I use channels exactly that way and they work pretty well. 
>
> Then you're paying some penalty for synchronization where the same 
> thing can be achieved without that penalty. 
>
>
Yes, indeed, but channels offer some significant advantages:

1. a division of labor between several goroutines is made possible without 
much effort. That can mean a lot, depending on how much complex is the 
logic involved in generating each value;
2. a possibly very complex state is preserved between each generated value 
(the execution stack);

I would dare to say that a prime number generator is more of an exception, 
because the state to be preserved between calls is well understood. Now 
think about some evolving code, where you can't know beforehand how complex 
that will be some years from now. Channels are a safer bet.

Anyway, you are correct: each use must be evaluated in it's pros an cons. 
You will see that in the vast majority of cases channels performance is 
more than enough.

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Re: [go-nuts] Channels may not be the best solution in Go

[JuciÊ Andrade]

On Thursday, October 3, 2019 at 2:24:20 AM UTC-3, burak serdar wrote:
>
> It can be argued that you were misusing channels. Channels are 
> synchronization mechanisms between goroutines. They are not generic 
> data pipes.
>

I use channels exactly that way and they work pretty well. 

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[go-nuts] Go Cloud Development Kit is looking for early adopters

[JuciÊ Andrade]

"Go CDK provides commonly used, vendor-neutral generic APIs that you can 
deploy across cloud providers. The idea is to support hybrid cloud 
deployments while combining on-prem (local) and cloud tools."

https://gocloud.dev/

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[go-nuts] Re: lots of 'undeclared name' errors with vscode/gopls

[JuciÊ Andrade]

Gopls depends on finding a go.mod file, otherwise you get lots of 
"undeclared name".
If it's not there just go to your project root folder and issue the command 
"go mod init".

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[go-nuts] Re: VS + GO plugin questions

[JuciÊ Andrade]

The last time I installed VSCode I had to set GOPATH environment variable, 
otherwise the Go plugin wasn't able to find source code for std library. I 
don't know if that situation improved in recent releases.

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[go-nuts] Re: THANKS GO TEAM FOR GOLANG'S NEW VERSION.

[JuciÊ Andrade]

I am pretty sure this gratitude sentiment is shared by many many people.

In particular, I appreciate the care towards the evolution of tooling. 
Those guys just don't surrender to the first approach. Each idea is debated 
ad nauseam before making to the final product. Much beyond the language, 
there is a great amount of effort to guarantee the quality of tools and 
libraries.

The end result of such care is that when a user tries to achieve new goals, 
the Go infrastructure doesn't disappoints. That harmony is hard to attain, 
but definitely it is there. Go is trustful.

Thanks for everybody involved.

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[go-nuts] Re: What did you see at GopherCon 2019 (San Diego)?

[JuciÊ Andrade]

Very nice of yours, Akram. Thank you.

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[go-nuts] Re: About the Google logo on the new Go website

[JuciÊ Andrade]

So a company spend millions on a tool that everybody may use freely and 
when they put a simple logo in the project page the sky falls down.

Are you serious, people? I find hard to believe we are discussing that.


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Re: [go-nuts] Re: Interesting public commentary on Go...

[JuciÊ Andrade]

Registering Go as a trademark is important to protect it against improper 
use.
Let's not forget "Sun vs Microsoft" fighting to define what could be named 
"Java".

https://www.zdnet.com/article/sun-vs-microsoft-clash-of-the-titans-5000121284/

On Friday, May 24, 2019 at 3:49:18 AM UTC-3, Rob 'Commander' Pike wrote:
>
> If that's true - and it might well not be - it's a surprise to me. When 
> launching the language we explicitly made sure NOT to trademark it.
>
> -rob
>
>
> On Fri, May 24, 2019 at 10:50 AM Gerald Henriksen  > wrote:
>
>> On Fri, 24 May 2019 07:40:52 +1000, you wrote:
>>
>> >The last sentence of the article is not correct. The name Go is not
>> >trademarked by Google, at least as a programming language trademark. 
>> There
>> >are other things Google makes called Go (an interesting signal on its 
>> own)
>> >and they might be trademarked, but Go the language is not a trademark.
>>
>> The link provided in the blog post would seem to indicate otherwise.
>>
>> If one scrolls down the list the following 2 entries are of interest:
>>
>> Golang™ programming language
>> Go™ programming language
>>
>> https://www.google.com/permissions/trademark/trademark-list/
>>
>>

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[go-nuts] Re: How many Go compilers are out there?

[JuciÊ Andrade]

One of the reasons I like Go is the very professional approach to its 
development. Work is well done since the inception.
Having a language specification appears to be a simple matter, yet many 
other languages doesn't have such document.
It turns out that this very artefact is essential for writing decent tools 
and I am glad Go has several independently developed compilers.

Thanks.

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Re: [go-nuts] Re: Web access to golang-dev is down

[JuciÊ Andrade]

Now it is working. Thanks.

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Re: [go-nuts] Re: Web access to golang-dev is down

[JuciÊ Andrade]

My IP: 177.223.105.20
Tried both Microsoft Edge and Mozilla Firefox Developer Edition
version 67.0b17 (64-bits)
No problem at all accessing golang-nuts.

On 5/7/19, Marcin Romaszewicz  wrote:
> The same for me. golang-dev is not accessible to me, nor does it show up in
> a group search, meaning it's not visible to me. I'm not a registered member
> of it, so it appears to no longer be a public group.
>
> -- Marcin
>
>
> On Tue, May 7, 2019 at 7:57 AM  wrote:
>
>> Sorry, forgot to include: Yes, I can access golang-nuts, no errors.
>> Golang-announce works fine, neovim gives the error. Clojure works fine.
>>
>> Howard
>>
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>> 
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>>
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Re: [go-nuts] Re: Web access to golang-dev is down

[JuciÊ Andrade]

Me too. I can't access golang-dev.
"An error (#401) occurred while communicating with the server."

>
>

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Re: [go-nuts] Re: the Dominance of English in Programming Languages

[JuciÊ Andrade]

I think my poor choice of words induced a misunderstanding. When I said "we 
code in Portuguese" I meant "we prefer to pick words from Portuguese for 
identifiers". Sorry.

On Friday, May 3, 2019 at 11:43:09 AM UTC-3, Ian Lance Taylor wrote:
>
> On Fri, May 3, 2019 at 7:28 AM Louki Sumirniy 
> > wrote: 
> > 
> > It would be incredibly computationally costly to add a natural language 
> translator to the compilation process.
>

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[go-nuts] How many Go compilers are out there?

[JuciÊ Andrade]

These are the ones I am aware of:

. GC toolchain
. GCC
. gopherjs

By Go compiler I mean any tool that understands Go source files and 
generates executable code.

Thanks


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