Re: [go-nuts] How to run some unittest repeatedly without build cache?

On Mon, Feb 11, 2019 at 10:32 PM Cholerae Hu wrote: > > Some bugs caused by data race cannot be detected by running unittest only > once. Before Go 1.12, I can use GOCACHE=off go test -race . to force it to > run without cache, but GOCACHE=on is required as of Go 1.12. So how can I > workaround

[go-nuts] How to run some unittest repeatedly without build cache?

Some bugs caused by data race cannot be detected by running unittest only once. Before Go 1.12, I can use GOCACHE=off go test -race . to force it to run without cache, but GOCACHE=on is required as of Go 1.12. So how can I workaround this? -- You received this message because you are subscribe

[go-nuts] Re: Go vs C speed - What am I doing wrong?

Micro optimization is only a small part of the picture. While you can shave off a few ms with micro optimization, you can save much more with macro optimization. Macro optimization deals with algorithm, program design, caching, etc. This is why some people consider language vs language micro-be

[go-nuts] Re: Handling connection retries on a highly-available service

It has absolutely nothing to do with mutexes/contexts/atomics or even Go (even if you program in Go). This is engineering or architecture task not the language thing, so you need to think like an architect. A lot of solutions possible if you add some sort of integration layer between P and Logg

Re: [go-nuts] Golang closures, counter-intuitive behaviour

For what it's worth, there is a popular proposal up that suggests changing for range loops to redefine their variables for every iteration: https://golang.org/issues/20733 On Mon, Feb 11, 2019 at 4:58 PM Burak Serdar wrote: > On Mon, Feb 11, 2019 at 5:48 PM Slawomir Pryczek > wrote: > > > > Hi

Re: [go-nuts] Golang closures, counter-intuitive behaviour

On Mon, Feb 11, 2019 at 5:48 PM Slawomir Pryczek wrote: > > Hi Guys, > > When looking at this code below, you can see that the function will get LAST > value of i which is incremented inside the loop, but t is somehow copied and > taken inside a function so closure is created and it is bound to

Re: [go-nuts] Golang closures, counter-intuitive behaviour

On Mon, Feb 11, 2019 at 4:48 PM Slawomir Pryczek wrote: > > When looking at this code below, you can see that the function will get LAST > value of i which is incremented inside the loop, but t is somehow copied and > taken inside a function so closure is created and it is bound to current > va

[go-nuts] Golang closures, counter-intuitive behaviour

Hi Guys, When looking at this code below, you can see that the function will get LAST value of i which is incremented inside the loop, but t is somehow copied and taken inside a function so closure is created and it is bound to current value of t, so we'll have its current value in function. Th

[go-nuts] GAE import of cloud and appengine data stores fails when in same file

One of our developers has found that when they import both "google.golang.org/appengine/datastore" and "cloud.google.com/go/datastore", renaming the second import to remoteds, the build on AE fails, though it does not fail locally with dev_appserver.py. This only happens when the imports are in th

[go-nuts] TLS Trusted Certificate Authority (TCA) Extension Support

Bare with me on this, as I explain where I'm coming from and where I'm trying to go. We've integrated Go into our code base as a separate service that communicates with some server code through TLS. For the most part, this worked flawlessly through Go 1.10. We were affected by some of the Go 1.

Re: [go-nuts] Intercepting goroutine context switching

On Sat, Feb 9, 2019 at 5:07 PM Milind Chabbi wrote: > > Can you give me more details about these terms: "g0", "systemstack", and > "mcall"? In Go, goroutines are multiplexed on to threads, so there are typically many more goroutines than there are threads. Each thread has an associated goroutin

Re: [go-nuts] ZXBasic string slicing

https://play.golang.org/p/6GqrX15gXZ7 On Mon, 2019-02-11 at 13:04 -0800, Everton Marques wrote: > Funny feature from ZXBasic: > > There is a notation called slicing for describing substrings, and > this can  > be applied to arbitrary string expressions. > > `"abcdef"(2 TO 5)="bcde"` > > http://

[go-nuts] Go 1.12 Release Candidate 1 is released

Hello gophers, We have just released go1.12rc1, a release candidate version of Go 1.12. It is cut from release-branch.go1.12 at the revision tagged go1.12rc1. Please try your production load tests and unit tests with the new version. Your help testing these pre-release versions is invaluable. Re

Re: [go-nuts] Re: Go vs C speed - What am I doing wrong?

> On Monday, February 11, 2019, 10:59:20 AM PST, Robert Engels wrote: > > Please don’t base any decisions on the benchmark games. They are seriously > flawed. > Someone could write "They are seriously flawed." without ever having looked to see :-) -- You received this message because yo

[go-nuts] Job Posting from a multinational company in Silicon Valley

We are seeking Staff engineer to lead Cloud Native Application initiative. We are taking our strength and leadership in compute and virtualization and extending it from a VM-centric focus to managing app-centric, containerized workloads using Kubernetes, Docker, and other emerging container tec

[go-nuts] ZXBasic string slicing

Funny feature from ZXBasic: There is a notation called slicing for describing substrings, and this can be applied to arbitrary string expressions. `"abcdef"(2 TO 5)="bcde"` http://www.worldofspectrum.org/ZXBasicManual/zxmanchap8.html -- You received this message because you are subscribed to

Re: [go-nuts] Mismatched types work sometimes?

Cheers Rob, I'll certainly read that. On Mon, 11 Feb 2019 at 20:53, Rob Pike wrote: > You might find blog.golang.org/constants helpful. > > -rob > > > On Tue, Feb 12, 2019 at 5:04 AM Jamie Caldwell < > mr.jamie.caldw...@gmail.com> wrote: > >> Thanks for the help and quick response Tyler. >> >> O

Re: [go-nuts] Mismatched types work sometimes?

You might find blog.golang.org/constants helpful. -rob On Tue, Feb 12, 2019 at 5:04 AM Jamie Caldwell wrote: > Thanks for the help and quick response Tyler. > > On Mon, 11 Feb 2019 at 17:56, Tyler Compton wrote: > >> Constant expressions like 'A' or 3 or named constants like "const x = 7" >>

Re: [go-nuts] Parsing date with Timezone doesn't return UTC

On Mon, Feb 11, 2019 at 10:53 AM wrote: > > Hi all, please could you help me with a simple problem? > > I have some parsing code like this: https://play.golang.org/p/6bVyWg4FCVN > > It writes > > 20190211T103847+ > > 2019-02-11 10:38:47 + UTC > > > on the server. > > When I put the code i

[go-nuts] Handling connection retries on a highly-available service

If this process is mission-critical, I'd turn it around, have it log to stdout, push that stdout to files with svlogd (from runit) and move that to the log server. The reason is that if this process has to implement the log retrying logic, that is a priority inversion. It's better to buffer the

[go-nuts] Parsing date with Timezone doesn't return UTC

Hi all, please could you help me with a simple problem? I have some parsing code like this: https://play.golang.org/p/6bVyWg4FCVN It writes 20190211T103847+ 2019-02-11 10:38:47 + *UTC* on the server. When I put the code into test, package tcx_test import ( "fmt" "testing" "time" )

Re: [go-nuts] Go vs C speed - What am I doing wrong?

On Saturday, February 9, 2019 at 9:30:25 AM UTC-8, Isaac Gouy wrote: > On Tuesday, February 5, 2019 at 3:03:42 AM UTC-8, ohir wrote: > >> >> > Contributors can recreate the same benchmarking routines in C, golang, >> JS >> >> This is how "benchmark game" **entertaining** sites are architectured.

Re: [go-nuts] Go vs C speed - What am I doing wrong?

On Saturday, February 9, 2019 at 9:20:41 AM UTC-8, Isaac Gouy wrote: > > > On Sunday, February 3, 2019 at 10:44:11 AM UTC-8, Milind Thombre wrote: >> >> … a quantitative performance study/Benchmarking study … If a verifiable >> (unbiased) study is already done and published, I'd greatly apprecia

Re: [go-nuts] Mismatched types work sometimes?

Thanks for the help and quick response Tyler. On Mon, 11 Feb 2019 at 17:56, Tyler Compton wrote: > Constant expressions like 'A' or 3 or named constants like "const x = 7" > are what Go calls "untyped constants". The type of these constants are > determined by the context in which they're used.

Re: [go-nuts] Mismatched types work sometimes?

Constant expressions like 'A' or 3 or named constants like "const x = 7" are what Go calls "untyped constants". The type of these constants are determined by the context in which they're used. For example: const myConst = 3 myFloat := 2.5 fmt.Println(myFloat + myConst) fmt.Println(myFloat + 3) Bo

[go-nuts] Mismatched types work sometimes?

Hello, Can you help? https://play.golang.org/p/XfJZ3h06p60 Why does 'A' work, when first assigning it to a variable doesn't? Thank you, Jamie. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving e

[go-nuts] Handling connection retries on a highly-available service

Hi guys. I need a little help here. I work in a digital marketing company, where we have a program that receives a lot of requests every second (counted in thousands) and logs its behaviour via a logger that runs on another server. We are currently trying to implement a connection-retry system bet

Re: [go-nuts] Go modules do not respect vendor folder of dependencies (is this by design?)

The fact that a module-mode build ignores dependencies vendored into *other* modules is intentional. #27227 may change several details of vendoring in module mode, but this is not one of them. If module B vendors its dependencies but does not specify their versions in a go.mod file, then you s

Re: [go-nuts] Re: Documention of a blog entry out of date

Hi Peter! Thank for updating the reference, so instead of looking decode i DO see panics and reconver in encode.go!! I guess there is slight inconsistency in the go blog. I will help you guys (and help me, and others) by pointing this out in the proper place. Greetings V El lun., 11 feb. 2019

[go-nuts] Re: Documention of a blog entry out of date

Victor, If you look at the source code, you may find that the blog inadvertently switched decode and encode. See encode.go. Reporting issues: If you spot bugs, mistakes, or inconsistencies in the Go project's code or documentation, please let us know by filing a ticket on our issue tracker. ht

Re: [go-nuts] Basic Data structures and Algorithms with Go

The first chapter of my book from packt is available on golangweekly. Book Title: "Basic Data structures and Algorithms with Go". Some quick observations: The code indention of many code snippets is broken. Example: https://i.postimg.cc/6QFyMVjr/twic-Value.png The terminal windows are *huge

[go-nuts] Documention of a blog entry out of date

Dear all i was reading The defer, panic and recover entry at the go blog until i found this statement: For a real-world example of panic and recover, see the json package from > the Go standard library. It decodes JSON-encoded data with a set of

Re: [go-nuts] Alternative of defer?

Very nice snippetI Like how you wrap in a clousure the critical section using a lock that comes from the enviorement. I don't know if it is idiomatic but it could be!, and btw this really helps the original "questioner" (using er to honour golang "er" sufix) Thanks for sharing El domingo, 10 de

Re: [go-nuts] Help- Empty request header and body

Hi, Please attacted is app files (unnecessary codes deleted). I don’t if I could made mode simpler but this is how am able let you identify the problem am encountering when I run this code. I tried to print the request header and body and this is what am getting ] &{{ObjectIdHex("") 0 0 []

[go-nuts] facing error "pq: unexpected Parse response 'C'" for multiple queries

Hi, I am working on project where I connect through PostgreSQL for CRUD operations and in back end I use golang. For transaction handling , I was using simple transaction objects for handling db operations as - *tx, err := db.Begin()* * handle

[go-nuts] Basic Data structures and Algorithms with Go

The first chapter of my book from packt is available on golangweekly. Book Title: "Basic Data structures and Algorithms with Go". Check out the golangweekly : https://golangweekly.com/link/59052/5d605019f3 The code for the book is available at: https://lnkd.in/f-Dy_Z4 #machinelearning

Re: [go-nuts] Help- Empty request header and body

Am new in golang and am trying to write an API but my request header and body is always empty. Well, that's a *lot* of code. Please trim it so it forms a SSCCE (http://www.sscce.org/). Lutz -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To

Re: [go-nuts] Go vs C speed - What am I doing wrong?

On Sat, 9 Feb 2019 09:30:24 -0800 (PST) "'Isaac Gouy' via golang-nuts" wrote: > > *"Look at the history of java samples and benchmark earlier vs current at > > same task"* > and conclude what? That some languages demands very deep intrinsic knowledge to get code running faster than in its most

Re: [go-nuts] Enumerate query result fields using "github.com/go-ole/go-ole/oleutil"

Any ideas on how I can get a list of fields (not values) after executing something like this? Try these: * https://golang.org/pkg/database/sql/#Rows.Columns * https://golang.org/pkg/database/sql/#Rows.ColumnTypes These methods give you information about the columns of a sql.Row. Lutz -- You