-The Go Playground is a web service that runs on -golang.org's servers. -The service receives a Go program, compiles, links, and runs the program inside -a sandbox, then returns the output. -
- --There are limitations to the programs that can be run in the Playground. -They must be single-threaded (but they may use many goroutines). -There are also limits on execution time, and CPU and memory usage. -The Playground can access only a subset of the standard library -(notably absent are network and file system access). -Therefore, the only communication a Playground program has to the outside world -is via standard output. -