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Colleagues, I have written an R function (see fully annotated code below), with which I want to process a dataframe within levels of the variable StepType. My program works, it processes the data within levels of StepType, but the usual headers that separate the output by levels of StepType are at the end of the listing rather than being used as separators, i.e. I get Regression results StepType

In my unit tests for my User model, I''m testing some validation cases. What is really strange, and driving me crazy, is that in the unit tests, it seems like the save method is causing my validations to execute twice, and produce duplicate error messages. This is making my tests fail (because I''m checking for the number of errors that I expect). In the web browser, only one error