I'm considering using Go as a low-level, performant language alternative to C/Objective-C to implement a library for an iPhone App. Could either of the Go compilers generate a library that could be linked into a native iPhone app with the Go runtime, etc.? Is there an ARM port for Go or does gccgo/gcc support this? I imagine that since g...
I'm trying to learn the go language, and I'm writing a simple echo server. I'm having difficulty making it work, though. func listen(server string) { var buf []byte listener, ok := net.Listen("tcp", server) if ok != nil { fmt.Fprintf(os.Stderr, "Could not listen on socket: %s\n", ok.String()) return } ...
I didn't find a BitSet package in Go, so I tried to implement it. I'd like to use a array of uint64 to store the bits. I need the number of bits to allocate the uint64 array. With Java, I can define a constructor that takes an integer. While Go doesn't provide constructor, how can I properly initialize the BitSet 'object' when user cal...
I'm just starting with Golang and I am now stuck on MD5 creation. This is how I started to get a md5 hash from a string: import "crypto/md5" var original = "my string comes here" var hash = md5.New(original) But obviously this is not how it works. Can someone provide me a working sample for this? ...
In bytes_test.go I see: a := Split([]byte(tt.s), []byte(tt.sep), tt.n) where tt.s and tt.sep are strings. But when I try to do a := bytes.Split([]byte("test"), []byte("e"), 0) I get: cannot convert "test" (type ideal string) to type []uint8 in conversion cannot convert "e" (type ideal string) to type []uint8 in conversion ...
I'm working with twitter's api, trying to get the json data from http://search.twitter.com/trends/current.json which looks like: {"as_of":1268069036,"trends":{"2010-03-08 17:23:56":[{"name":"Happy Women's Day","query":"\"Happy Women's Day\" OR \"Women's Day\""},{"name":"#MusicMonday","query":"#MusicMonday"},{"name":"#MM","query":"#MM...
I'm looking for the Go equivalent of scanf(). I tried with following code: 1 package main 2 3 import ( 4 "scanner" 5 "os" 6 "fmt" 7 ) 8 9 func main() { 10 var s scanner.Scanner 11 s.Init(os.Stdin) 12 s.Mode = scanner.ScanInts 13 tok := s.Scan() 14 for tok != scanner.EOF { 15 ...
I'm having a little play with google's Go language, and I've run into something which is fairly basic in C but doesn't seem to be covered in the documentation I've seen so far When I pass a pointer to an array to a function, I presumed we'd have some way to access it as follows: func conv(x []int, xlen int, h []int, hlen int, y *[]int)...
In one of the example servers given at golang.org: package main import ( "flag" "http" "io" "log" "template" ) var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18 var fmap = template.FormatterMap{ "html": template.HTMLFormatter, "url+html": UrlHtmlFormatter, } var templ = templat...
What does the notwithstanding keyword mean in Google Go? For background, see http://www.libertatia.org/blog/?p=247, which was linked from Reddit | Programming. ...
Is it possible to write client for Cassandra datastore in Go language? ...
We want to rewrite kodingen.com backend with Go which currently is Java, running as daemon using jsvc. I have never touched any C in my life, am only experienced in Java so I don't know if this is something that I should even start. However, task is pretty simple read shell commands from mysql database queue and execute them in paral...
How to create a new data type for Go which to can check/validate its schema when is created a new variable (of that type)? By example, to validate if a string has 20 characters, I tried: // Format: 2006-01-12T06:06:06Z func date(str string) { if len(str) != 20 { fmt.Println("error") } } var Date = date() type Account struct { ...
Could put a little example about the use of crypto/rand [1]? The function Read has as parameter an array of bytes. Why? If it access to /dev/urandom to get the random data. func Read(b []byte) (n int, err os.Error) [1] http://golang.org/pkg/crypto/rand/ ...
What's the function to create a int value from string i := ???.????( "10" ) ...
As we can see from The Computer Language Benchmarks Game: go is in average 10x slower then C go is 3x slower then Java !? How it can be bearing in mind that go compiler produces native code for execution? Immature compilers for go? Or there is some intrinsic problem with the go language? EDIT: Most answers deny intrinsic slowness...
I can't see arguments for main() in package main. How to pass arguments from command line in Go? A complete program, possibly created by linking multiple packages, must have one package called main, with a function func main() { ... } defined. The function main.main() takes no arguments and returns no value. ...
ascii85 has a function to get the maximum length of an encoding MaxEncodedLen(). I think that it should have too a function to get the length at decoding like it has in Base64. http://golang.org/pkg/encoding/ascii85/ ...
Hi, How do I use Go's "foreign function interface" to call out to a C function? This interface is mentioned on the FAQ, but I cannot see it mentioned elsewhere in the docs. ...