Expressions
R code is composed of a series of expressions. Examples of expressions in R include assignment statements, conditional statements, and arithmetic expressions. Here are a few examples of expressions:
> x <- 1 > if (1 > 2) "yes" else "no" [1] "no" > 127 %% 10 [1] 7
Expressions are composed of objects and functions. You may separate expressions with new lines or with semicolons. For example, here is a series of expressions separated by semicolons:
> "this expression will be printed"; 7 + 13; exp(0+1i*pi)
[1] "this expression will be printed"
[1] 20
[1] -1+0iGet R in a Nutshell, 2nd Edition now with the O’Reilly learning platform.
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