Hi i'm new in go and i currently still learning on it, there is a question about the difference between data race and race condition, i get a bit confused about the difference between it and can someone tell me what is the real different between those condition and the sample answer ? Thanks in advance

CodePudding user response：

A data race is a kind of race condition.

A data race is where a variable is written concurrently with other reads and writes of the variable. Here's a data race example:

 x := 1
 go func() { x = 2 }()  // The write to x on this line executes ...
 fmt.Println(x)         // concurrently with the read on this line

The program can print 1, 2, or fail in some unspecified way.

A race condition is where concurrently executing code produces different results due to nondeterministic timing. Here's a race condition example (that is not a data race):

 ch := make(chan int, 1)
 go func() { ch <- 1 }()
 go func() { ch <- 2 }()
 fmt.Println(<-ch)

The goroutines race to send a value to the channel. The program can print 1 or 2.

CodePudding user response：

some reference and example can be read in https://medium.com/trendyol-tech/race-conditions-in-golang-511314c0b85