practice mode on phones
tap the code to type with your on-screen keyboard. phone runs are practice only — they aren't scored or added to the leaderboard.
func doWork(ctx context.Context) error {
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 context snippet in Go — 9 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 (9 lines)
func doWork(ctx context.Context) error {
select {
case <-time.After(2 * time.Second):
return nil
case <-ctx.Done():
return ctx.Err()
}
}
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