Chapter 7. R Programming Structures
R is a block-structured language in the manner of the ALGOL-descendant family, such as C, C++, Python, Perl, and so on. As you’ve seen, blocks are delineated by braces, though braces are optional if the block consists of just a single statement. Statements are separated by newline characters or, optionally, by semicolons.
Here, we cover the basic structures of R as a programming language. We’ll review some more details on loops and the like and then head straight into the topic of functions, which will occupy most of the chapter.
In particular, issues of variable scope will play a major role. As with many scripting ...
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