Are double “” and single '' quotes (always) interchangeable in R?

Question

This is perhaps rather a minor question...

but just a moment ago I was looking through some code I had written and noticed that I tend to just use =\"something

Answer 1

According to http://stat.ethz.ch/R-manual/R-patched/library/base/html/Quotes.html, "[s]ingle and double quotes delimit character constants. They can be used interchangeably but double quotes are preferred (and character constants are printed using double quotes), so single quotes are normally only used to delimit character constants containing double quotes."