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Online Go Editor.

Write, refactor, and download Go source in the browser with completions, find, and format helpers.

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Write, refactor, and download Go source in the browser with completions, find, and format helpers.

Related technologies: go mod, goroutines, net/http, Kubernetes operators — see also Rust Editor, C# Editor, JavaScript Editor.

Starter snippet

package main

import "fmt"

func main() {
	for _, s := range []string{"go", "fmt"} {
		fmt.Println(s)
	}
}

Context + HTTP

ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()

req, _ := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
res, err := http.DefaultClient.Do(req)

Variables

count := 0  var name string

Loops

for i := 0; i < n; i++ { }  for k, v := range m { }

Functions / methods

func Add(a, b int) int { return a + b }

Comments

// line  /* block */

Variables

int count = 0;
const char *name = "ct";

Loops

for (int i = 0; i < n; i++) { }
while (cond) { }

Parse → transform → emit

// Go pipeline sketch
const input = readLines();
const output = input
  .map(line => line.trim())
  .filter(Boolean)
  .map(transform);
writeLines(output);

Error handling wrapper

// Go
function runSafely(task) {
  try {
    return { ok: true, value: task() };
  } catch (err) {
    return { ok: false, error: String(err) };
  }
}

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