Refactor print_to_console
#45
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This fixes #40
Looking at the app's current design, I figured printing out the error message within the
print_to_consolefunction may be appropriate. This makes the code simple and straightforward.In the future, if we want the caller to take some action based on the error, it may be more appropriate to return a
Result<(), std::sync::PoisonError<std::sync::RwLockWriteGuard<Vec<Print>>>>and let the caller handle the error.