finally i figure this out XD! type obj struct { Targets []string `json:”targets”` Labels map[string]string `json:”labels”` } func main() { // Creating simulation var myobj = []*obj{} n := new(obj) n.Targets = append(n.Targets, “10.0.0.1”) n.Labels = make(map[string]string) n.Labels[“job”] = “db2” myobj = append(myobj, n) k := new(obj) k.Targets = append(k.Targets, “192.168.1.12”) k.Targets = append(k.Targets, “192.168.1.13”) … Read more
Sending a body with a GET request is not supported by HTTP. See this Q&A for full details. But if you really want to do this, even though you know it’s wrong, you can do it this way: iKnowThisBodyShouldBeIgnored := strings.NewReader(“text that won’t mean anything”) req, err := http.NewRequest(http.MethodGet, “http://example.com/foo”, iKnowThisBodyShouldBeIgnored) if err != nil … Read more
This question leaks details that because it earned so much down-votes. I assumed that we are dealing with a Get method of UserService in go-jira. The Get method returns error: func (s *UserService) Get(username string) (*User, *Response, error) You are omitting error check and pulling it to a blank identifier. Note that if an error … Read more
If you only need the standard md5 algorithm, here’s how to use it in go, as noted in the documentation: import ( “fmt” “crypto/md5” “io” ) func main() { h := md5.New() io.WriteString(h, “The fog is getting thicker!”) io.WriteString(h, “And Leon’s getting laaarger!”) fmt.Printf(“%x”, h.Sum(nil)) } If you need an md5 function that returns a … Read more
Thanks to @JimB comments I found out the following: the most obvious and simple solution is just keep your dependencies in GOPATH, with version control, and just let godep handle them all (@JimB) So yes, this means adding package(s) to git and all this stuff. In case if you don’t want/can’t do that, the order … Read more
Here is an example (completely neglecting error handling): request, _ := http.Get(“https://api.github.com/repos/openebs/openebs”) defer request.Body.Close() bytes, _ := ioutil.ReadAll(request.Body) var apiResponse struct { StargazersCount int `json:”stargazers_count”` } json.Unmarshal(bytes, &apiResponse) fmt.Println(apiResponse.StargazersCount) Playground 3 solved How to extract json api through go to extract stargazers_count of a repo?
type casting in golang is done by appending .(T) ip := cookieData[“ip”].(map[string]string) email := ip[“email”] 2 solved Get a single key value from map[string]string
After testing a little bit, it looks like that specific website is using Akamai Ghost and has been configured to block the default go http package user agent. The default user agent appears to be Go-http-client/1.1 If you change your user agent req.Header.Set(“User-Agent”, “my-client-app”) The request will work. However, the website in question appears to … Read more
Thanks to the comments above, the problem is if f, err := os.OpenFile( …) defines a new variable f, this new variable is not used. There are two potential solutions: f, err := os.OpenFile(fn, os.O_RDWR, 0) if err != nil { log.Fatal(“error”, err) } Or var f *os.File var err error if f, err = … Read more
One solution can be the use of go map[] to track the taken characters. sample code: func main() { s := “abcdaabcefgahccij” newS := “” taken := make(map[rune]int) for _, value := range s { if _, ok := taken[value]; !ok { taken[value] = 1 newS += string(value) } } fmt.Println(newS) } Output: abcdefghij solved … Read more
function start with lower case is an unexport function. An unexport function can be used only inside the package. You have to export getRoute function by changing the function name to GetRoute. solved ask import undefined Go
From the docs: The default precision for %e, %f and %#g is 6; for %g it is the smallest number of digits necessary to identify the value uniquely. 4 solved fmt.Printf(“%f\n”,x) rounds a Float64 to Float32, but fmt.Println(x) doesn’t
package main import ( “fmt” “strings” ) func main() { for i := 1; i <= 6; i++ { fmt.Printf(“%6s\n”, strings.Repeat(“#”, i)) } } Try it on the Go playground 1 solved How to print the star pattern aligned to right hand side in GO lang
in go there are no classes in the way you usually see them .. instead we use the syntax in question do declare methods on types, the argument in front is called areceiver and if we use a pointer receiver we get reference type semantics otherwise you get value type semantics. check out the go … Read more
[A-Za-z0-9]{1,254} Indicates , any character of: ‘A’ to ‘Z’, ‘a’ to ‘z’, ‘0’ to ‘9’ (between 1 and 254 times (matching the most amount possible)), Edit: If you need @ at the end try with the regex [A-Za-z0-9]{1,254}@ 1 solved Filter input amount at specific points in regex? [closed]