GoLang Tutorial - Goroutines
Goroutines are functions or methods that run concurrently with other functions or methods. A goroutine is a lightweight thread managed by the Go runtime.
Prefix a function or a method call with the keyword go. Then, we will have a new Goroutine running concurrently.
Let's run the following code:
Surprisingly, we do not have the output from the call "go hello()". Our Goroutine did not run. Goroutine did not get a chance to run. What happened?
After the call to "go hello()", the control returned immediately to the next line of code without waiting for the "hello" goroutine to finish and printed "main".
Let's put some time in between the calls:
Now the call to go hello() has enough time to execute before the main Goroutine terminates!
We can control the execution flow as shown in the example below:
Now we know how concurrency is achieved in Go using Goroutines.
But what if one Goroutine wants to call another Goroutine?
How do Goroutines communicate each other?
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