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Emacs san bernardino4/9/2023 The C++ community doesn’t even like capital letters for class names, though you see it in some packages like Eigen. For some reason, lots of people find it jarring. A typical requirement for variables is that they start with a letter or underscore and may be continued with any number of letters, digits or underscores. Python, C++ and Java all forbid dots in variable and function identifiers because of confusibility with method calls on objects. We didn’t want function names with dots because of the issue with S3 methods (as pointed out to us by Ben Goodrich and above by Radford).īecause we wrote Stan in C++, we used C++ conventions. The main reason we didn’t want to use dots in R parameter identifiers because we wanted the RStan interface to have variable names for options that matched those in Stan. My ears were burning, so I thought I’d clarify our reasoning. This entry was posted in Statistical computing by Andrew. Then once I switch to underscores for variables that go into Stan models, I’m inclined to be consistent and use underscores throughout. We don’t want to be changing Stan’s rules (too much of a mess given that Stan is written in C++) so I have to change my R conventions. Much easier to have the same name in both. I don’t want to have a variable that’s called sd.y in R and sd_y in Stan. Otherwise we were running into difficulties because Stan, following C, does not allow dots in variable names. I am switching to underscores in R variable names to be consistent with C. I think they’re recommending this to be consistent with R coding conventions. In comments, Ben Hyde points to Google’s R style guide, which recommends that variable names use dots, not underscore or camel case, for variable names (for example, “avg.clicks” rather than “avg_Clicks” or “avgClicks”). Do they reassign the key or do they just get used to pressing Shift? I’m just wondering what C programmers actually do. What do people do about this? I know that it’s easy enough to reassign keys (I could, for example, assign underscore to backslash, which I never use). But I’m getting annoyed because I need to press the shift key every time I type the underscore. For example, I can name a variable n_years rather than n.years. My C-oriented Stan collaborators have convinced me to use underscore (_) rather than dot (.) as much as possible in expressions in R.
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