golang-nuts@googlegroups.com discussions

1	[go-nuts] Powersets and append() confusion

Hi. I made a string only version of the powerset function on Rosetta Code <https://rosettacode.org/wiki/Power_set#Go and ran into a bug where a slice input to *append()* [one, two, three, four] seems ...

Oliver Schmid
Jun 18, 2016 at 5:16 pm
Jun 18, 2016 at 5:50 pm

0	[go-nuts] generating interfaces from proto3 (grpc)

Hi I've a proto3 file: ====== message Any { } message InsertParams { Any Record = 1; } service myService { rpc Insert (InsertParams) returns (InsertResponse); } ======== where I have an "Insert" API ...

Sankar
Jun 18, 2016 at 4:59 pm
Jun 18, 2016 at 4:59 pm

0	[go-nuts] EncodeInt and DecodeInt functions in https://github.com/dineshappavoo/basex/

Basex - [base62] Youtube like id generator : Introducing EncodeInt and DecodeInt functions to basex library. They basically do exactly the same functionality as Encode and Decode but use raw *big.Int ...

Dinesh Appavoo
Jun 18, 2016 at 7:41 am
Jun 18, 2016 at 7:41 am

3	[go-nuts] go1.7beta2 prints "too many values in struct initializer" when I ran "go test" for gopkg.in/vmihailenco/msgpack.v2

Hi, Here are commands I used to set up gopkg.in/vmihailenco/msgpack.v2 go get -u gopkg.in/vmihailenco/msgpack.v2 cd $GOPATH/src/gopkg.in/vmihailenco/msgpack.v2 go get -u github.com/ugorji/go-msgpack ...

Hiroaki Nakamura
Jun 18, 2016 at 2:01 am
Jun 18, 2016 at 8:20 am

5	[go-nuts] encoding/json: any way to receive number literal "10.0" into integer field?

We have an upstream provider of JSON data which sends integer data types as floating point literals with a "0" decimal part. By default json.Decoder doesn't allow this and fails ...

Jgold
Jun 17, 2016 at 9:37 pm
Jun 17, 2016 at 10:33 pm

2	[go-nuts] importer.Default not able to find packages in $GOPATH

Hi All, I'm trying to use the go/* packages to parse and type check Go source code. I've downloaded github.com/coreos/etcd to test this on, and I'm currently trying it out in the etcdserver ...

Joshua Liebow-Feeser
Jun 17, 2016 at 7:22 pm
Jun 17, 2016 at 9:23 pm

1	[go-nuts] Is this deterministic ?

https://play.golang.org/p/yE7UVXcXm3 The key point here is that all the RHS of the `Cross` function must be evaluated before the LHS is assigned. But I need to have a guarantee that we won't assign ...

Olivier Gagnon
Jun 17, 2016 at 3:51 pm
Jun 17, 2016 at 4:05 pm

5	[go-nuts] export struct method to C-code as callback (cgo-related)

Hello, Could you guys please help me. I can't find how to export method function which belongs to some go-struct to C-code (cgo part) as callback. I know how to export simple function which not ...

Andrey
Jun 17, 2016 at 2:32 pm
Jun 18, 2016 at 9:06 am

0	[go-nuts] Gomobile: Large .so/aar file sizes on Android

Hi All I am using Go version 1.6.2 and Gomobile (sha +6b7a416 from the tip) and to build an Android library. Our code is mostly networking "encoding/json" "fmt" "log" "math/rand" "net" "sort" "time" ...

Rajiivkanchan
Jun 17, 2016 at 2:32 pm
Jun 17, 2016 at 2:32 pm

5	[go-nuts] When should I use the connection pool?

Hi to all, I'm new here and using golang too. I've read some articles and post on Connection Pooling" but I'm still confused. What I'm looking for is a rule of thumb that make me easy to decide when ...

Cydside
Jun 17, 2016 at 2:32 pm
Jun 18, 2016 at 1:47 pm

0	[go-nuts] How string can be converted into smaller size?

Hi guys, Let's say there is something big size string data. To store that data, I want to convert or compress this string. Though I've already tried compress/gzip package. What else how can I do ...

Harry
Jun 17, 2016 at 5:53 am
Jun 17, 2016 at 5:53 am

2	[go-nuts] map memory usage question

I'm running a terabyte-scale (minor compiler changes are necessary to get this to run) genome resequencing simulation at the moment and an interesting question has arisen. The simulation involved ...

Dan Kortschak
Jun 16, 2016 at 11:59 pm
Jun 17, 2016 at 8:02 am

2	[go-nuts] godoc.org giving a 503 error

godoc.org is returning: Error: Server ErrorThe service you requested is not available yet. Please try again in 30 seconds. -- You received this message because you are subscribed to the Google Groups ...

Traun Leyden
Jun 16, 2016 at 11:52 pm
Jun 17, 2016 at 12:08 am

0	[go-nuts] [ANN] Buford v0.9.0 Apple Push Notifications for iOS 10 beta

Buford is a Go library for remote notifications on iOS, macOS, tvOS, and watchOS. It uses the HTTP/2 protocol that Apple has supported since last year. This releases adds a few new fields based on ...

Nathan Youngman
Jun 16, 2016 at 11:24 pm
Jun 16, 2016 at 11:24 pm

2	[go-nuts] Go 1.7 Beta 2 is released

Hello gophers, We have just released go1.7beta2, a beta version of Go 1.7. It is cut from the master branch at the revision tagged go1.7beta2. Please help us by testing your Go programs with the ...

Chris Broadfoot
Jun 16, 2016 at 11:15 pm
Jun 17, 2016 at 7:59 pm

8	[go-nuts] Currying in Go

Hello, Go enables the evaluation of functions using currying over function literals. Every example I've found of this is rather shallow; a "deeper" example I wrote implementing (x = (y = (z = x^2 + ...

Zauberkraut
Jun 16, 2016 at 10:00 pm
Jun 18, 2016 at 3:32 am

1	[go-nuts] Misunderstanding interface types as return types

I haven't fully grasped the type inference/promotion/demotion rules yet, particularly with respect to having function arguments & return values with interface types. Here is a distilled example that ...

Ccahoon
Jun 16, 2016 at 8:56 pm
Jun 16, 2016 at 9:12 pm

3	[go-nuts] CPU fairness in goroutine scheuding

Hello golang experts, I am curious how does goroutine scheduler picks what goroutine to run, among several runnable. Does it optimize for fairness in any way? I ran a quick experiment and found out ...

Dmitry Orlov
Jun 16, 2016 at 6:45 pm
Jun 17, 2016 at 7:47 pm

1	[go-nuts] python bencoded list equivalent in golang

The server which I am contacting to is written in python and excepts bencoded list. In my existing python client code I do something like this: 'li4456e6:Rakeshi27ee' Server gets back the list by ...

Rakeshhs1
Jun 16, 2016 at 4:30 pm
Jun 16, 2016 at 5:30 pm

3	[go-nuts] How to manage a web portal with multiple services without stopping and restarting everything at each release/fix?

Hi All, Forgive me if I posted in the wrong group, as it could be more of a question related to design patterns rather than to golang itself. *The context* Imagine to create a full portal with users, ...

Romano Panzacchi
Jun 16, 2016 at 3:02 pm
Jun 17, 2016 at 1:33 pm

3	[go-nuts] Detecting address family of net.IP

Hi, In many software projects I have to get the address family of a net.IP object. I always duplicate the following code: func isIPv4(ip net.IP) bool { return len(ip) == net.IPv4len || (len(ip) 11 && ...

Google
Jun 16, 2016 at 3:02 pm
Jun 17, 2016 at 2:27 pm

3	[go-nuts] Testing best practice: passing and failing test

Let's say I have some piece of code like this: type Foo struct { } func (this *Foo) Do() { } If I want to test that method Foo will pass in a certain scenario and fail in another scenario should I ...

Rayland
Jun 16, 2016 at 2:04 pm
Jun 17, 2016 at 1:32 pm

7	[go-nuts] Golang Error - When marshelling data

The data I am trying to marshal contains serialized data. This data is received in http response. It works perfectly when I try in version 1.4.1/ 1.4.2. But when I try this to the latest version 1.6 ...

User123
Jun 16, 2016 at 9:44 am
Jun 17, 2016 at 6:28 pm

9	[go-nuts] Getting a lot of i/o timeouts in Go 1.4

I am trying to run a large number of tcp connects https://play.golang.org/p/lNGWD-q028. However I am getting a lot of i/o timeouts. Is this a know issue, or I am missing something. -- You received ...

Mayank Jha
Jun 16, 2016 at 8:04 am
Jun 16, 2016 at 7:14 pm

2	[go-nuts] Simplest way to extend the functionality of other's package

Let me explain with an example, For goquery, most functions are of type "func (s *Selection) Xxx(selector string) *Selection". For e.g., "Find" is: func (s *Selection ...

Tong Sun
Jun 16, 2016 at 4:12 am
Jun 18, 2016 at 12:09 am

0	[go-nuts] goquery, how to remove child

How to remove child nodes in goquery? I'm trying 3 different ways to remove child nodes in my sample code, https://github.com/suntong/kuaizh/blob/master/crawler/kijiji.go as I can't quite figure it ...

Tong Sun
Jun 16, 2016 at 3:39 am
Jun 16, 2016 at 3:39 am

1	[go-nuts] Seeker documentation.

It seems that it is not well defined what happens when you get an error. Looking at the os.File implementation the returned n value is always zero on error. But isn't it possible that the underlying ...

Jonathan Gaillard
Jun 16, 2016 at 12:43 am
Jun 16, 2016 at 3:51 am

0	[go-nuts] [ANN] Beta Go support added in AppNeta TraceView (full stack monitoring)

Hey All, We've recently released support for Golang on our APM platform. You can read our blog post here <https://www.appneta.com/blog/go-long-with-golang/ and check out our repo ...

Jmoore
Jun 15, 2016 at 10:20 pm
Jun 15, 2016 at 10:20 pm

10	[go-nuts] caching of cgo compilation

Under what conditions does a cgo package get recompiled? I am using go-sqlite3 and it appears that the C compiler/linker is run every time I build my project, even though I am not changing any of the ...

Alex Flint
Jun 15, 2016 at 9:54 pm
Jun 16, 2016 at 1:38 pm

0	[go-nuts] Diff struct

Is there any effort/package/lib that provides diffs on structs with serilization/deserilization methods? I need to store data changes in a db. The db itself (datastore) doesn't provide versions so I ...

Mihai B
Jun 15, 2016 at 8:56 pm
Jun 15, 2016 at 8:56 pm

5	[go-nuts] Golang Grep

Hi guys, How do I assign a variable function of sample scripts are used on the following address? https://github.com/StefanSchroeder/Golang-Regex-Tutorial/blob/master/01-chapter3.markdown How can I ...

ToSuNuS
Jun 15, 2016 at 3:54 pm
Jun 15, 2016 at 5:13 pm

6	[go-nuts] Re: broadcasting on a set of channels

Late reply, but still trying to figure something out here. What happens if the channel closes? I'm thinking about maintaining a list of channels (one for each websocket client), then sending a ...

Integrii
Jun 15, 2016 at 2:03 pm
Jun 16, 2016 at 4:32 pm

0	[go-nuts] [ANN] GopherPit.com - service to manage remote import paths

Hello all, I would like to announce GopherPit [0], a web service to serve and manage go-import and go-source HTML meta tags. [1] That is the base functionality, but it supports custom domains, ...

Janoš Guljaš
Jun 15, 2016 at 2:03 pm
Jun 15, 2016 at 2:03 pm

7	[go-nuts] [ANN] Mirror of Go SSA

Mirror of the Go compiler SSA library - https://github.com/bjwbell/ssa The mirror is automatically updated daily. Any feedback is welcome. I'm unsure on the licensing requirements for mirroring. -- ...

Bjwbell
Jun 15, 2016 at 5:02 am
Jun 16, 2016 at 5:59 pm

3	[go-nuts] A proposal for generic in go

Here is my proposal for generic in go: https://docs.google.com/document/d/1nO7D15c2B3eq2kF62C0yUs_UgpkyPL2zHhMAmlq1l98/edit?usp=sharing Many parts has not been finished, and just initial thoughts. In ...

Xingtao zhao
Jun 15, 2016 at 1:04 am
Jun 16, 2016 at 11:02 am

0	[go-nuts] [Announce] sybil - an append-only column store

Hi golang-nuts! [this is sybil's first public announcement; feedback, discussion, comments or bugs are much appreciated, any and all help welcome!] sybil (v0.0.5) is a free and libre append-only ...

Okay zed
Jun 15, 2016 at 12:49 am
Jun 15, 2016 at 12:49 am

2	[go-nuts] Hi! I'm happy to announce the very first release of nexer 1.0.0b simple and easy to use and extend content based network multiplexer

*nexer* is a simple and easy to use and extend content based network multiplexer (or redirector) made with love and golang. Binaries: https://github.com/diegohce/nexer/releases/latest ...

Diego Cena
Jun 15, 2016 at 12:29 am
Jun 15, 2016 at 2:11 pm

0	[go-nuts] Question related to how go get works

Hi, I'm trying to understand the reason why does go get download the current arch/os/no build flags (unless specified)? I'm asking this because in the current vendor chat there's a comparison with go ...

Florin Pățan
Jun 14, 2016 at 10:48 pm
Jun 14, 2016 at 10:48 pm

3	[go-nuts] cgo problem with #defines

Is the following code supposed to work? Not sure whether I'm doing something wrong or cgo just doesn't support this style of #defines. I reduced it down to a simple test case, but the actual problem ...

Dragos Harabor
Jun 14, 2016 at 10:18 pm
Jun 14, 2016 at 10:40 pm

1	[go-nuts] Is there an easy way to check if two named types are identical across packages?

It's my understanding that the type checker considers named types identical only if they're represented by the same pointer. Thus it makes sense for types.Identical and typeutil.Hasher.Hash to return ...

Aurélien Bombo
Jun 14, 2016 at 10:18 pm
Jun 14, 2016 at 10:45 pm

7	[go-nuts] Is syscall.Mmap broken? Or am I?

Hello all - I've been having a hard time getting syscall.Mmap to produce the "right" values. I'm using 1.6.2 and cross-compiling for the ARM/Linux. I'm trying to read from Arm memory at its device ...

Dave Mazzoni
Jun 14, 2016 at 7:52 pm
Jun 14, 2016 at 10:19 pm

11	[go-nuts] Bitmasks on signed types

Is this supposed to be legal in Go: var x int32 = 3 fmt.Printf("%d", x & 0xFFFFFFFF)? The language spec just says the bitwise operator "applies to integers only" and "yields a result of the same type ...

Dave MacFarlane
Jun 14, 2016 at 5:16 pm
Jun 16, 2016 at 12:17 am

0	[go-nuts] [ANN] jsonmon 2.0.11

jsonmon is a simple but powerful monitoring and alerting system. It has only two types of checks: shell and Web. More details at https://github.com/chillum/jsonmon/wiki Today the version 2.0.11 is ...

Vasily Korytov
Jun 14, 2016 at 5:03 pm
Jun 14, 2016 at 5:03 pm

6	[go-nuts] How to properly get basename under DOS?

I thought to get basename, we should use the official *path.Base* -- https://golang.org/pkg/path/#Base However, I just found out that it is *not working under DOS* -- ...

Tong Sun
Jun 14, 2016 at 4:55 pm
Jun 14, 2016 at 5:30 pm

0	[go-nuts] Is it possible to upload golang application to Mac App store?

I developed an application that displays a icon in status bar to show network speed. I have packaged it to a standard mac app package (ns.app and ns.dmg) using command *codesign* and *appdmg.* The ...

Liudan king
Jun 14, 2016 at 4:30 pm
Jun 14, 2016 at 4:30 pm

26	[go-nuts] [ANN] primegen.go: Sieve of Atkin prime number generator

That's interesting but your time or 0.7 seconds on your specified machine isn't very informative: you should at least specify how long the original version of primegen (which is not multithreaded) ...

Gordonbgood
Jun 14, 2016 at 12:31 pm
Jun 18, 2016 at 10:54 am

2	[go-nuts] How to get executed query string after execution.

Hi guys, I wonder that question. Before execution, it's possible to get query by myself. But I want to get executed query string actually. Is there any way to manage that? Thanks! -- You received ...

Harry
Jun 14, 2016 at 1:18 am
Jun 14, 2016 at 2:04 am

1	[go-nuts] Proposal: extend the "don't care" value to more uses

consider func Foo(a int, b string, x SomeStruct) It would be nice if it was possible to pass in the "don't care" value, a.k.a. "_" as one of the argument, as an alias for the default value of the ...

Oli Gagnon4418
Jun 13, 2016 at 9:42 pm
Jun 13, 2016 at 9:49 pm

0	[go-nuts] Goque - Disk-based, high performance stacks, queues, and priority queues for Go

Just finished this project and wanted to post here to post it here, get some feedback, and hopefully it will be useful for someone. GitHub link: https://github.com/beeker1121/goque It implements ...

Conner Hewitt
Jun 13, 2016 at 7:26 pm
Jun 13, 2016 at 7:26 pm

1	[go-nuts] x509: failed to load system roots and no roots provided

Hi, We have a container running a Golang 1.6 based app that tries to perform an OAuth request against GitHub. We are using the following "golang.org/x/oauth2" "golang.org/x/oauth2/github" I get the ...

Chris Johnson
Jun 13, 2016 at 7:26 pm
Jun 13, 2016 at 7:55 pm

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