I’m sorry, but it’s very hard to understand when you start with solutions. I
think maybe clearly restating the problem will allow more people to offer up
ideas. To be honest at this point I’m not really certain what you’re trying to
demonstrate or why.
> On Dec 8, 2019, at 12:44 AM, Egon
I meant lock-free as in "without explicit locks".
The original challenge still stands if someone has a better solution than
me:
"The deadlocks in 2_1.go and 2_2.go are caused by the simplistic and wrong
implementation of bidi-comm, which is what I'll be illustrating. I have
three working
I understand what you are saying but I’ll still suggest that your
premise/design is not correct. There are plenty of useful lock free structures
in Go (see github.com/robaho/go-concurrency-test) but that is not what you are
attempting here... you are using async processing - these are
I'll cite myself:
"I'm preparing a short talk about Go channels and select. More
specifically, I want to show what not to do."
and
"it would be tempting to just combine two goroutines into one and handle
caching in a single loop without using locks (I see developers avoid
atomics and locks if
As a bonus challenge, try to compute the population center of Brazil :) One
way of finding the center is minimizing the integral of all distances to a
point, but for population, these points now have weight.
Like Michael above, I spent years working on Google Earth, and the code
running in the
I completely missed the .Doc field in the ast.FuncDecl type. That's
perfect. Thanks.
On Sat, 2019-12-07 at 03:47 -0800, Charith Ellawala wrote:
> I am searching for a good way of doing this myself. An approach that
> seems
> to work reasonably well is to just iterate through the AST files and
>
As Ian pointed out, the code you provided has a race condition. Using
timers to try to avoid a race like you do here may work *most *of the
time, but it is not rigorously correct. When dealing with concurrency is is
critical to always be 100% rigorusly "correct". Otherwise you will
eventually
On Sat, Dec 7, 2019 at 9:12 AM wrote:
>
> How can I turn on debugging in net/rpc/server.go?
>
> There is a promising variable called `debugLog` in there. How should I
> toggle it?
I don't know how much it will help, but the way to toggle it is to
literally edit net/rpc/debug.go to set debugLog
On Sat, Dec 7, 2019 at 9:12 AM kr c wrote:
>
> https://play.golang.org/p/mqpT8XBbeiN
>
> Hi, Everyone! I'm newbie in go. Help needed.
> As far as I learned, gorutines should pass "value" through channels.
> There's more safe way to handle this kind of stuffs with using waitgroup,
> context,
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
...now *this* is something that I know a great deal about (resulting in
label placement in Google Maps and Google Earth, discussions with
colleagues in USGS, the US Census Bureau, DoD, the United Nations GGIM
experts group, UK Ordnance Survey, Survey of India, etc.)
Indeed most of the issues
I am searching for a good way of doing this myself. An approach that seems
to work reasonably well is to just iterate through the AST files and
extract the function declarations:
cfg := {
Mode: packages.NeedName | packages.NeedTypes | packages.NeedSyntax |
packages.NeedFiles,
Dir:
package main
import (
"errors"
"log"
"time"
)
func main() {
err := f()
if err != nil {
log.Fatal(err)
}
}
func f() (err error) {
var rerr error
defer func() {
if rerr != nil {
How can I turn on debugging in net/rpc/server.go?
There is a promising variable called `debugLog` in there. How should I toggle
it?
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this is quickly becoming off-topic. however, from
https://en.wikipedia.org/wiki/Geographical_centre:
"As noted in a USGS document "There is no generally accepted
definition of geographic center, and no completely satisfactory method
for determining it."[1]
In general, there is room for debate
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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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
Nitish,
I don't think you really explained the problem you are having. There is
nothing in go that prevents you from running multiple instances of an
executable, hence creating multiple processes running the same program. You
can simply open two console windows and start the same long
Probably not. Go is designed for 1:1 and there is no reason to do it
differently. You could probably try to write an async event driven layer (which
it looks like you’ve tried) but why???
It’s like saying I’d really like my plane to float - you can do that -but most
likely you want a boat
Hi Brian,
I understand by running the service as containers is one route through
which we can achieve this.
My query is if I want to avoid that route , is there a way to achieve this
using Go code to define multiple instance and run them independently?
Thanks,
Nitish
On Sat, Dec 7, 2019 at 1:52
On Sat, Dec 7, 2019 at 2:34 PM JuciÊ Andrade wrote:
> 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
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
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
Hi!
chasquid v1.2 has been released.
chasquid is an SMTP (email) server with a focus on simplicity, security, and
ease of operation.
It's written in Go, and is open source under the Apache license 2.0.
See https://blitiri.com.ar/p/chasquid/ for more information.
This release fixes a
I'll try to clarify as best as I can, thanks again to anyone looking at
this.
The simple server implementation of "output <- input+1" is here and it is
not "under our control" - it's what we have to work with:
https://github.com/egonk/chandemo/blob/master/server.go
The test runner or client
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