### Tips on non-standard evaluation in R

One of my favorite features of R is its meta-programming facilities. It can be simply demonstrated by the following examples.
An ordinary use of R is to do statistical computing. We can evaluate something like

<span>sin</span><span>(</span><span>0</span><span>)</span>

[1] 0Meta-programming in R allows users to manipulate the expression to evaluate. We can ... [Read more...]