To prevent data races in concurrent code using the race detector tool in Golang, follow these steps:
Compile your code with the race detector flag. Run your code using the "go run" command, but add the "-race" flag to enable the race detector. For example:
go run -race main.go
Run your code and let the race detector analyze it.
If any data race is detected, the race detector will report it along with the relevant information like the line number and the stack trace.
Analyze the race detector report to identify the variables and the parts of the code involved in the race condition.
Modify your code to eliminate the data race. Use synchronization primitives like mutex, channels, or atomic operations to ensure that shared data is accessed safely by multiple goroutines.
Repeat steps 2-5 until the race detector no longer reports any data races.
By using the race detector tool in Golang, you can systematically identify and eliminate data races in your concurrent code, ensuring correctness and preventing hard-to-debug issues.