How to quickly pinpoint the error in the idea?

There are several ways to quickly locate the error line.

1. Reading error messages: When a program encounters an error during execution, it will generate corresponding error information, including the type of error and the line where the error occurred. Paying close attention to error messages can provide clues about the error and help you quickly locate the problematic line.
2. Using a debugger: A debugger is a development tool that allows you to execute code line by line and observe the behavior of a program. By setting breakpoints before an error occurs, you can step through the code and examine the result of each line, ultimately identifying the line where the error is located.
3. Print debugging information: Add some debug output statements in the critical code sections to print the values of key variables or some execution status information. By observing this output, it can help you locate the line where the error is occurring.
4. Utilize a logging system: Record crucial information, such as error messages and debugging details, within the program using a logging system. By checking the log files, you can pinpoint the source of errors.
5. Using version control system: If you manage your code with a version control system, you can find the location of errors by comparing different versions of the code. You can revert back to the previous working version, then compare the differences in the code one by one until you identify the line of code that is causing the error.

No matter which method you use, the key to quickly identifying the error line is to carefully read the relevant information and systematically check the code line by line.