On Sun, 2022-01-30 at 13:47 -0800, Sean Liao wrote:
> By enforcing blanks, you'd lose the chance to name them something
> useful to tell the reader why they're ignored.
> eg:
> // why are the last 2 args ignored??
> handleX = func(foo, bar, _, _ string) string { return foo + bar }
>
On Sun, 2022-01-30 at 12:01 -0800, Kamil Ziemian wrote:
> Hello,
>
> This is a question from ignorant in the meters of compilers and
> mediocre Go users at best, so it may be stupid.
>
> I really like that in Go unused variable or import is compiler time
> error. As such I wonder why function like
On Thu, 2022-01-20 at 19:05 -0800, Mandolyte wrote:
> Or perhaps a hybrid, where the methods call generic functions...
>
> On Thursday, January 20, 2022 at 7:23:37 PM UTC-5 Ian Lance Taylor
> wrote:
> > On Thu, Jan 20, 2022 at 3:30 AM Travis Keep
> > wrote:
> > >
> > > I am working on a
I have thoughts about the impact of assertion libraries in software
engineering. I came from a background where they are commonplace into
Go and in my earlier projects I used some the earlier iterations on
them (go-check).
While it's true that developers *can* use assertion libraries to
provide
While not a tool, there is code that can be bent to this in
golang.org/x/pkgsite/internal/source. I used that to get repo
information for a tool to obtain homepage and issue page links from Go
executables[1]. You could easily extend that kind of approach to get
the actual repo at the relevant
On Tue, 2022-01-04 at 08:29 -0800, Brieuc Jeunhomme wrote:
> Hi,
>
> I'm writing code that uses the golang.org/x/sys/windows/svc package.
> This package compiles only for windows builds, for other GOOS values,
> I get a build error. That's fair, but I'm wondering how to unit test
> the code that
On Thu, 2021-12-09 at 17:22 -0800, Kurtis Rader wrote:
> Note that the documentation for ParseFloat states: "ParseFloat
> accepts decimal and hexadecimal floating-point number syntax." In
> other words, it explicitly does not support the binary format emitted
> by FormatFloat('b'). I don't know
On Sun, 2021-12-05 at 13:24 -0800, arthurwil...@gmail.com wrote:
> How is it possible for this test case to ever fail?
>
> // Same allocation should be equal to itself (not crash).
> err := errors.New("jkl")
> if err != err {
> t.Errorf(`err != err`)
> }
>
On Mon, 2021-11-15 at 15:06 -0800, David Karr wrote:
>
> I'm pretty new to Go (many years in other languages). I'm trying to
> use cgo to use a C library we're using.
>
> I have the following line of code, which is compiling (that's been
> enough of a struggle):
>
> status =
On Wed, 2021-11-03 at 18:50 -0700, Adam Koszek wrote:
> Hello,
>
> We (Segmed.ai) are processing a lot of medical imaging data. It comes
> to us in the form of PNG/JPG/DICOM files. 90% of it is uncompressed
> or using a normal JPEG encoding, but around ~7% of it is encoded with
> lossless JPEG
On Sun, 2021-10-24 at 17:53 -0700, jlfo...@berkeley.edu wrote:
> But this seems overly complicated.
Sorry. That was a joke. You asked why you can't use len(); you can, by
using it to it into create something that is indexable (and so a
possible parameter for len()).
> Plus, I don't see why this
You can use len to determine the sizeof a struct.
https://play.golang.org/p/f0x8p_04lP1 ;)
On Sun, 2021-10-24 at 16:44 -0700, jlfo...@berkeley.edu wrote:
> Thanks for the replies.
>
> I had been trying to translate the trick from C into Go where you can
> find how many structures are in an
On Fri, 2021-10-08 at 16:36 -0700, Christian Stewart wrote:
> Is there a way to /not/ have this information in the binary?
>
You can use the garble tool[1] to strip/garble things like this.
$ cd golang.org/x/tools/cmd/stringer
$ garble build .
$ go version -m stringer
stringer: unknown
On Fri, 2021-10-08 at 15:33 -0700, Kamil Ziemian wrote:
> Hello,
>
> I now read documentation of "fmt" package and in "Format errors" (
> https://pkg.go.dev/fmt@go1.17.2#hdr-Format_errors) we have
> Invalid or invalid use of argument index: %!(BADINDEX)
> Printf("%*[2]d", 7):
On Fri, 2021-09-24 at 11:21 +0100, Ian Davis wrote:
> This is not a correct interpretation. In your example the
> unmarshaller reads the incoming json. The first key encountered is
> "Name" and it matches exactly with the field named and tagged as Name
> so that field is assigned the value. The
On Fri, 2021-09-24 at 11:21 +0100, Ian Davis wrote:
> This is not a correct interpretation. In your example the
> unmarshaller reads the incoming json. The first key encountered is
> "Name" and it matches exactly with the field named and tagged as Name
> so that field is assigned the value. The
On Fri, 2021-09-24 at 10:22 +0100, Ian Davis wrote:
> I was responding to your statement that it doesn't appear to use
> exact match in preference. It does, as the example I gave
> demonstrated. It's not about guarding case.
I'll clarify.
In the example I posted
On Fri, 2021-09-24 at 09:55 +0100, Ian Davis wrote:
> On Fri, 24 Sep 2021, at 9:36 AM, 'Dan Kortschak' via golang-nuts
> wrote:
> > On Fri, 2021-09-24 at 01:03 -0700, Brian Candler wrote:
> > > On Friday, 24 September 2021 at 08:25:31 UTC+1 Brian Candler
> > > wrote:
On Fri, 2021-09-24 at 01:03 -0700, Brian Candler wrote:
> On Friday, 24 September 2021 at 08:25:31 UTC+1 Brian Candler wrote:
> > The documentation says it prefers exact match over case-
> > insensitive, but example 3 contradicts that. It seems to be last-
> > match that wins.
> >
> >
>
> I
Also, https://research.swtch.com/mm.
On Tue, 2021-09-21 at 16:22 -0500, robert engels wrote:
> This may be of interest to you:
> https://github.com/golang/go/issues/5045
>
> > On Sep 21, 2021, at 4:17 PM, Ian Lance Taylor
> > wrote:
> >
> > On Tue, Sep 21, 2021 at 12:54 PM xie cui
> > wrote:
>
On Sun, 2021-09-05 at 13:09 +0200, 'Axel Wagner' via golang-nuts wrote:
> This sounds interesting, but I don't understand it. Would you be
> willing to expand on this?
It's a consequence of the sum of successive powers of two. To have
reached an allocation of 2^n slots assuming a doubling n times
On Sun, 2021-09-05 at 03:51 -0700, Brian Candler wrote:
> I'm not sure you're clear about what "monotonically increasing"
> means.
>
> Are you saying that there are some cases where append() results in
> the allocated size of a slice *shrinking*? If so, please
> demonstrate.
I think he means
On Sun, 2021-09-05 at 08:15 +0200, 'Axel Wagner' via golang-nuts wrote:
> Whether that factor is 2 or 1.25 doesn't matter. It's just a bit of
> an optimization to make it 2 for small values - it doesn't terribly
> matter what's "small" for this heuristic.
There is a reason for choosing a factor
This is what you're describing, right?
https://play.golang.org/p/RJbEkmFsPKM
The code that does this is here
https://github.com/golang/go/blob/9133245be7365c23fcd60e3bb60ebb614970cdab/src/runtime/slice.go#L183-L242
. Note that there are cap adjustments to optimise block sizes and
alignments. This
What would you expect to happen here? A chan that has had one item sent
and then one item received has no items on it, so a receive must wait
until another item is sent.
On Sat, 2021-09-04 at 17:55 -0700, Michael Dwyer wrote:
> I encountered a deadlock when reading from a buffered channel.
> The
On Thu, 2021-08-26 at 18:21 -0400, Paul S. R. Chisholm wrote:
> Hypothetical example: Say I'm writing an application that
> uses "rsc.io/quote" and I discover a bug in that package that breaks
> my software. I would of course clone the quote repository, add a test
> that demonstrates the bug, fix
The elf package provide a sentinel error, ErrNoSymbols for the case
that Symbols or DynamicSymbols cannot return a symbol list because the
section is empty[1]. The same situation is handled in plan9obj by
returning a new error for this case[2-3]. For PE/Mach-O there is no
issue since access to the
On Wed, 2021-08-25 at 18:11 -0700, ben...@gmail.com wrote:
> With the switch to pkg.go.dev (which in itself I quite like after
> getting used to it), the view-source links also changed from the
> golang.org source viewer, which was fast, to cs.opensource.google,
> which is rather slow.
>
> For
On Mon, 2021-08-16 at 09:22 +0700, Rijal Asep Nugroho wrote:
> I was browsing how to make a golang code to convert an image to pure
> black and white, but didn't find a suitable one, only got how to
> convert the image to grayscale.
> Can anyone help? thank you.
If you do a greyscale conversion
On Tue, 2021-08-10 at 15:54 -0700, E Z wrote:
> I quite agree with your above conclusion, and the test results also
> prove it. That seems to be the way it's designed right now, but what
> I find a little hard to understand here is why it's not designed as
> "The pointer to function assignment
On Tue, 2021-08-10 at 14:50 -0700, E Z wrote:
> It works when I changed the code as your suggested. That's great,
> thanks.
>
> And I'm still a little confused here, you know when we use the struct
> method directly, it is only when the function is called that the type
> of receiver determines
On Thu, 2021-07-29 at 11:45 -0700, Ian Lance Taylor wrote:
> > Should this be "unspecified" rather than "undefined"?
>
> The general concern here is that if there is something like a file
> descriptor involved, and if the Close method doesn't take special
> protection to avoid problems with
I just noticed today that the io.Closer docs say that "The behavior of
Close after the first call is undefined. Specific implementations may
document their own behavior".
Should this be "unspecified" rather than "undefined"?
Dan
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On Tue, 2021-07-27 at 20:55 -0700, Tong Sun wrote:
> Hi,
>
> I'm trying to understand the benchstat's output.
> The benchstat that I have is fresh from golang.org/x/perf/cmd/,
> installed hours ago.
>
> This is understandable:
>
> nameold time/opnew time/opdelta
> FormatEmoji-2
On Wed, 2021-06-30 at 15:45 -0700, 'Jay Conrod' via golang-nuts wrote:
> Hi Sebastien, once a version is in proxy.golang.org, it usually can't
> be removed. This is important to ensure that builds continue working
> when a repository disappears upstream.
>
> You may want to publish a new version
On Sat, 2021-06-26 at 20:44 -0700, Ian Lance Taylor wrote:
> Looks like you have multiple SearchResults values that refer to the
> same map.
Shouldn't that result in a panic, even without -race?
Dan
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On Sat, 2021-06-26 at 23:26 +0100, Rory Campbell-Lange wrote:
> I'm trying to work out why I have a data race problem (on go 1.15 and
> 1.16).
>
> *SearchResults.Set is called from several goroutines. I am trying to
> avoid concurrent access to its two maps using a mutex, but this isn't
> working.
On Tue, 2021-06-22 at 12:45 -0500, Steven Penny wrote:
> Thanks for the help, but I found a much simpler example:
>
> https://play.golang.org/p/EcitH-85X6S
Yes, trivial examples also exist.
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On Mon, 2021-06-21 at 18:22 -0500, Steven Penny wrote:
> I am not questioning anyones knowledge, I am just asking for a
> demonstration, rather than "do it because we said so".
https://play.golang.org/p/gwDnxVSQEM4
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On Mon, 2021-06-21 at 17:57 -0500, Steven Penny wrote:
> > No, I gave a clear path that would lead to a case of a non-detected
> > error when Close is not called.
> >
> > This seems like a really odd hill to die on, but it's your choice I
> > guess.
>
> You calling "go look through 3200 lines of
On Mon, 2021-06-21 at 17:44 -0500, Steven Penny wrote:
> and none has been able to provide a simple program that demonstrate a
> problem that could arise from not closing gzip reader.
No, I gave a clear path that would lead to a case of a non-detected
error when Close is not called.
This seems
On Mon, 2021-06-21 at 17:30 -0500, Steven Penny wrote:
> > No other compress reader even has a Close method, so I think Im
> > fine:
>
> - https://golang.org/pkg/compress/bzip2
> - https://golang.org/pkg/compress/flate
> - https://golang.org/pkg/compress/lzw
> -
On Mon, 2021-06-21 at 16:53 -0500, Steven Penny wrote:
> > Again, the idiom is, if you get an `io.Closer`, `Close` should be
> > called once
> > you're done with it.
>
> Thanks for the responses, but I am not convinced. Other than "its
> just good
> practice", I havent seen a single concrete
On Tue, 2021-06-08 at 07:57 -0500, robert engels wrote:
> The following code is works fine from the developers perspective:
>
> https://play.golang.org/p/gC1XsSLvovM
>
> The developer says, oh cool, I see this great new 3P library that
> does background logging - I want to use that instead. Hey, I
On Sun, 2021-06-06 at 03:17 -0700, Brian Candler wrote:
> When you assign a regular (non-pointer) value to an interface
> variable, it does take a copy of that value:
> https://play.golang.org/p/XyBREDL4BGw
It depends on whether it's safe to leave uncopied or not. You can see
this here
On Sun, 2021-06-06 at 18:14 +1000, Rob Pike wrote:
> You are using a steamroller to press a shirt.
Tomi Ungerer has already published this approach.
https://kotonoha-books.ocnk.net/data/kotonoha-books/product/20160619_70ddf5.JPG
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On Fri, 2021-06-04 at 20:29 -0700, Deiter wrote:
> The reflect package provides the SetMapIndex method for updating
> elements in a map that are represented by a reflect.Value type, but I
> don’t see an equivalent for array/slice.
> The sample app (link provided below) includes an example of map
>
On Sat, 2021-05-15 at 04:47 -0700, cpu...@gmail.com wrote:
> In my local code, I'm using things like
>
> if errors.Is(err, api.ErrMustRetry) { ... }
>
> How would I achieve the same on errors returned by the gRCP
> interface? I've noticed these are wrapped:
>
> rpc error: code = Unknown desc =
On Mon, 2021-04-26 at 23:28 -0700, christoph...@gmail.com wrote:
> It seam that C is wrong on this one and Go is right. The rationale is
> that a NaN must propagate through operations so that we can detect
> problems (avoid silent NaNs). See https://en.wikipedia.org/wiki/NaN
>
> Thus any operation
This is not something that I've thought about before, but the behaviour
of math.Max when only one of its arguments is NaN does not agree with
the C convention or the IEEE-754 standard behaviour for max (5.3.1 p19
"maxNum(x, y) is the canonicalized number y if x
#include
void main() {
Comments in-line.
On Mon, 2021-04-19 at 15:08 -0700, 'hong...@google.com' via golang-nuts
wrote:
> Ah, glad your issue was resolved. I did want to point out one thing:
>
> > 2. The topic was obtained in the subscriber using new topic
> creation
> > `client.CreateTopic(ctx, topic)` rather than
On Mon, 2021-04-19 at 10:37 -0700, 'hong...@google.com' via golang-nuts
wrote:
> Is it possible for you to paste your yaml config file? At first
> glance, nothing seems to be out of the ordinary, but I'd like to try
> with the same configuration that you have to see if I missed
> anything.
I am trying to set up a toy to understand Google's Pub/Sub service Go
client API. I have had no trouble with publishing and have a local
emulator for the Google Scheduler service to build against, but I am
having a lot of trouble getting subscriptions to work.
I am able get a subscription to work
On Fri, 2021-04-09 at 17:01 +0200, 'Petite Abeille' via golang-nuts
wrote:
> [1] https://textprotocol.org
That's an extraordinarily and unnecessarily obtuse document.
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On Thu, 2021-03-25 at 14:20 -0400, jasm...@gmail.com wrote:
> Blast from the past so it's hard to be sure, but I think that was how
> many rows or columns to pick for parallel sub matrices to multiply.
>
> On Thu, Mar 25, 2021, 1:17 PM Gabriel Pcklub <
> gabrielpckl...@gmail.com> wrote:
> > Hello,
On Wed, 2021-03-24 at 18:31 -0700, Scott Pakin wrote:
> I just noticed that some of the package comments in the standard
> library are coming from the wrong source file. Here are two examples
> from a golang.org/pkg/ screenshot:
>
>
> In the case of the former, src/os/exec/read3.go appears to be
On Wed, 2021-03-24 at 22:09 +, alex breadman wrote:
> Let's keep divisive political BS away from this lovely project.
>
> Glad to see the political header removed from the website, at least
> on mobile.
>
> All lives matter.
This too is a political statement.
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On Tue, 2021-03-16 at 03:10 -0700, Haddock wrote:
> Anyhow, if I hear how young people are talking nowadays, it makes me
> sick. Die Funktion wurde "gecalled" und die Exception "gethrown".
> Sometimes I fear the next generation will not have learned to watch
> what their mind is doing. I might be
On Sun, 2021-03-14 at 15:08 -0700, Pascal de Kloe wrote:
> > Did you consider using context.Context rather than quit channels?
>
> Applying a context.Context pretty much implies using a quit channel.
> Done is the only way to receive an expiry signal.
>
> I just don't want to lock code into using
Now that a proposal for an approach to generics has been approved[1],
it seems like a good time to again[2] raise the issue of how to be able
to write code that has correlated types where types are structured but
built-in, and so fields are not available to examine. The only case of
this in the
On Sun, 2021-03-14 at 10:41 -0700, Pascal de Kloe wrote:
> New MQTT client library + command line tool available.
>
> https://github.com/pascaldekloe/mqtt
>
> Comments are welcome.
Did you consider using context.Context rather than quit channels?
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On Wed, 2021-03-10 at 15:20 -0800, Matt Mueller wrote:
> I'm assuming this is by design, but it feels to me like go install
> ./cmd/app/main.go silently failing is a bug.
>
> Is this worth opening an issue for?
If it's a bug it's an error reporting bug. The go install command is
documented to
On Sun, 2021-03-07 at 07:57 +, Paul Jolly wrote:
> Erroring on replace directives is an intentional decision for now:
> https://github.com/golang/go/issues/40276#issue-659471259
>
> But might be relaxed in the future:
>
> > Parts of this proposal are more strict than is technically
> >
On Sun, 2021-02-28 at 10:11 -0800, Bob Alexander wrote:
> I never have understood the *serious* hatred of Python's "indentation
> as syntax" approach. I've used lots of bracketed and begin/end
> languages (C/C++, Algol & relatives, Ruby, and most other programming
> languages), and when I write
On Sun, 2021-02-28 at 09:23 +0100, Jan Mercl wrote:
> I meant, for example, in regexp notation, ` *` vs `\n *` between a
> function signature and the opening brace of the function body.
Ah, yes.
> This assumes newline is a whitespace. Most programming languages
> agree, but humans may not.
With
On Sun, 2021-02-28 at 08:40 +0100, Jan Mercl wrote:
> Actually Go has that problem as well, just a thousand times smaller.
I'm curious where the meaningful whitespace is in Go (for amounts
differences in number greater than 1).
> FTR, I also think Python's approach to white space is a failure.
On Wed, 2021-02-17 at 02:33 +0530, Santhosh T wrote:
> is there java's BigDecimal equivalent in golang ?
There is, for example https://github.com/shopspring/decimal. But you
should ask yourself why you need this.
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You can set your precision arbitrarily high, but you will still find a
point at which there are non-zero decimal digits.
https://play.golang.org/p/JYcAvXQPfeO
123.4 cannot be represented in binary with a finite number of bits.
On Sun, 2021-02-14 at 13:33 -0800, Santhosh Kumar T wrote:
> now I
On Sun, 2021-02-14 at 13:19 -0800, Santhosh Kumar T wrote:
> When I print both values, they print exactly same. so I am assuming
> no precision lost for this specific example 123.4.
> but still Cmp returns non-zero.
This is not a good assumption to make, and is refuted by the result of
Cmp.
On Mon, 2021-02-08 at 19:09 -0800, messi...@gmail.com wrote:
> Hi,
>
> I'm reading the go compiler source code and found the following code
> style in several places:
>
>
>
> Is there some special reasons to group n,m,p to a local struct?
>
> Why don't we just init n the following way:
On Fri, 2021-02-05 at 00:12 +0100, Jan Mercl wrote:
>
https://www.geospatialworld.net/blogs/goodbye-michael-jones-the-man-who-gave-the-power-of-maps-in-our-hands/
Thank you for letting us know, Jan.
He will be missed.
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On Mon, 2021-02-01 at 23:48 -0800, 颜文泽 wrote:
> This is my code:
> 2021-02-02 15-45-01 的屏幕截图.png
Please don't post code as images.
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On Tue, 2021-01-19 at 21:38 -0800, Ian Lance Taylor wrote:
> On Tue, Jan 19, 2021 at 8:41 PM Dan Kortschak
> wrote:
> >
> > Would that work for non-comparable types? Say the T has an
> > underlying
> > []int type, then the comparison is not against nil and y
On Tue, 2021-01-19 at 16:08 -0800, Alexander Mills wrote:
> I have never seen the dot needed, I have used plenty of packages that
> are in GOPATH but not GOROOT
https://go.googlesource.com/go/+/go1.15.6/src/cmd/go/internal/search/search.go#542
This is why it is saying that it's expecting it to
On Tue, 2021-01-19 at 22:44 +, Kevin Chadwick wrote:
> On January
19, 2021 9:13:55 PM UTC, Levieux Michel <
> mlevieu...@gmail.com> wrote:
> > I think the question was: "given your proposal here, I can write
> >
func
> > (string | []byte in1, string | []byte in2) which enforces that
in1
> >
On Tue, 2021-01-19 at 13:54 -0800, Alexander Mills wrote:
> i am getting this weird error message:
>
> package twitch/go-scripts/dynamo-creators-to-s3/lib is not in GOROOT
> (/usr/local/Cellar/go/1.15.6/libexec/src/twitch/go-scripts/dynamo-
> creators-to-s3/lib)
>
> my GOPATH=$PWD/scripts/go
>
On Tue, 2021-01-19 at 21:09 +, Kevin Chadwick wrote:
> On January 19, 2021 8:22:01 PM UTC, 'Dan Kortschak' via golang-nuts <
> golang-nuts@googlegroups.com> wrote:
> > On Tue, 2021-01-19 at 20:01 +, Kevin Chadwick wrote:
> > > I was inquiring about the po
On Tue, 2021-01-19 at 20:01 +, Kevin Chadwick wrote:
> I was inquiring about the possibility of no identifiers or
> abstraction but simply like Gos non generic functions (possibly
> reversed if needed). Using type OR type.
>
> func (String | []byte firstInput, myType | publicKey
>
On Fri, 2020-12-25 at 18:11 +0100, Martin Hanson wrote:
>
> What are you on about!? This is my second post on this list, and even
> though both are about
> generics, they are adequately different to be kept about otherwise it
> becomes a big mess.
Some mailers do not properly handle headers
You can also use the internal map implementation and make us of the
runtime's map iterator. This is relatively straightforward at the cost
of vigilance for changes in the runtime.
Here is an example (note that yo need a .S file as well to get the
go:linkname magic to work).
I agree.
A lot of Gonum code would be greatly simplified with the availability
of generics, particularly the linear algebra part. The graph packages
would be richer and we could do more things with tensor-like
operations.
On Wed, 2020-12-23 at 23:54 -0800, Marcin Romaszewicz wrote:
> Those are
I think that's the question. Here's a simpler example,
https://play.golang.org/p/9Kv3PhlM-OF
That is, is 00 an expected %02x representation of a zero-length byte
slice?
The answer to that is yes; the 02 forces leading zeros. The %x verb
essentially renders bit strings as hex, so a zero-length
On Mon, 2020-12-14 at 13:53 +, Sam Whited wrote:
> In the example you provided it is working as expected. The element
> you're unmarshaling is in the "
> http://www.w3.org/1999/02/22-rdf-syntax-ns#; namespace (it has an
> "rdf"
> prefix) but the thing you're unmarshaling it into expects
>
I'm needing to consume some XML which has a namespace identifier
reused.
http://purl.obolibrary.org/obo/go/subsets/goslim_yeast.owl#;
xml:base="http://purl.obolibrary.org/obo/go/subsets/goslim_yeast.owl;
xmlns:go="http://purl.obolibrary.org/obo/go#;
That's not an error.
https://github.com/rsc/quote/blob/754f68430672776c84704e2d10209a6ec700cd64/quote.go#L22-L24
On Fri, 2020-11-20 at 17:49 -0800, Alexey Melezhik wrote:
> Thanks. I receive " Don't communicate by sharing memory, share memory
> by communicating. " error (?) when run the example
It does, but it depends on how big of a dependency set is imported due
to timeout. The example below does work.
https://play.golang.org/p/WL-OhWYsx68
On Fri, 2020-11-20 at 22:45 +, Paul Jolly wrote:
> Hi,
>
> > Hi go devs. I am thinking about brining up a service that would
> > execute Go
Reference: https://golang.org/ref/mod#vcs-version
> If a module is defined in a subdirectory within the repository, that
> is, the module subdirectory portion of the module path is not empty,
> then each tag name must be prefixed with the module subdirectory,
> followed by a slash. For example,
You should tag the version with the path to the module root: for
example path/from/root/v1.2.3
On Thu, 2020-11-19 at 18:58 -0800, Victor Denisov wrote:
> Hi,
>
> I've recently encountered an interesting behavior of go modules.
> I have a library in a repository on github. The go.mod file for
This can already be done using C.malloc and C.free. You won't have
access to map types using a Cgo allocator, but then you wouldn't if
you had to allocate using built-ins either.
On Sun, 2020-11-15 at 17:37 -0800, tapi...@gmail.com wrote:
> For example, by adding two new built-in functions: alloc
Or github.com/kortschak/utter .
This package does an arguably better job at dealing with self-
referencing structures.
On Sat, 2020-11-14 at 03:52 -0800, twp...@gmail.com wrote:
> > My use case is that I want to pretty print in-memory objects for
> debug purposes during testing, and one of the
On Tue, 2020-11-10 at 22:17 -0800, Kurtis Rader wrote:
> Jeebus. H. Christ! Yes, you can "safely" mutate a map while iterating
> over it. In as much as doing so will not result in a panic; although,
> I'm not convinced that is true. The point of the O.P. is that they
> expect the map mutation to
On Wed, 2020-11-11 at 06:02 +, 'Dan Kortschak' via golang-nuts
wrote:
> So long as you take into account these caveats, mutating a map during
> a range will not corrupt the map or other data structure, and will
> cause your application to crash.
s/will cause/will not cause/
--
You
On Tue, 2020-11-10 at 20:28 -0800, 'Kilos' via golang-nuts wrote:
> You cannot safely mutate a Go map while iterating over it with the
> `range` operator.
This is not true, depending on your definition of "safely". See
https://golang.org/ref/spec#For_statements "For statements with range
On Tue, 2020-11-10 at 19:08 -0800, 'Kilos' via golang-nuts wrote:
> Thanks for reply, but I want to know the underlying reason about it,
> I think the reason is in how the runtime functions works.
The direct cause is that the hash function used for the map
implementation is seeded from the system
//go:generate is not limited to dependency on Go source files, so this
is not possible in the general case.
On Tue, 2020-11-10 at 01:05 -0800, gta wrote:
> Thanks for the reply,
> yes I know I can grep for those files, but I was hoping that go list
> could give me the files in the reverse
OK, so you're not using Cgo, that leaves some other unsafe use, a data
race or unlikely some weird compiler bug.
I'd start looking in api.handleDPriceRange to see where the string
input to strconv.ParseFloat is being constructed.
On Fri, 2020-11-06 at 01:10 -0800, blade...@gmail.com wrote:
> go
The full panic would help, but somehow you have a string with a nil
pointer that is 4 bytes long. Where is the string generated? Are you
using Cgo? Have you run with the race detector? Also, what version of
Go are you using?
On Fri, 2020-11-06 at 00:00 -0800, blade...@gmail.com wrote:
> i check
There are two parts. The worse part is the negative conditional
(unless), which has the problem that humans are bad at negations;
nearly always when there is a complex condition with an "unless", it
needs to be mentally refactored into an "if !" (when working through
other people's bugs, I
My first professional programming language was Perl, decades later I
still wake up in a sweat thinking about post-fix conditionals and the
'unless' conditional.
Please no.
On Mon, 2020-11-02 at 14:26 -0800, Jeffrey Paul wrote:
> Hello Gophers,
>
> There's two tiny pieces of syntactic sugar I
Ah, it just clicked.
You're indirectly using go/packages, which will (unless configured not
to), cause changes to the go.mod and go.sum file. This configuration
happens for this by adding "-mod=readonly" to
packages.Config.BuildFlags (I think). But this isn't exposed via the
go/analysis API (the
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