mobile typing isn't scored — practice only
func fanOut(urls []string) {
Go · general · type the snippet below to practice
def fib(n):
a, b = 0, 1
for _ in range(n):
a, b = b, a + b
return a
about this snippet
This is the waitgroup snippet in Go — 12 lines of real Go code that exercises common patterns you'll see in production. DeveloperType scores you on net WPM and accuracy and only counts runs above 95% accuracy on the leaderboard, so practice rewards precision, not speed alone.
view source (12 lines)
func fanOut(urls []string) {
var wg sync.WaitGroup
for _, u := range urls {
wg.Add(1)
go func(url string) {
defer wg.Done()
fetch(url)
}(u)
}
wg.Wait()
}
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