knit_expand: A simple macro preprocessor for templating purposes
Description
This function expands a template based on the R expressions in {{}}
(this tag can be customized by the delim argument). These expressions
are extracted, evaluated and replaced by their values in the original
template.
Usage
knit_expand(file, ..., text = read_utf8(file), delim = c("{{", "}}"))Value
A character vector, with the tags evaluated and replaced by their
values.
Arguments
- file
The template file.
- ...
A list of variables to be used for the code in the template; note that
the variables will be searched for in the parent frame as well.
- text
Character vector of lines of code. An alternative way to specify
the template code directly. If text is provided, file will be ignored.
- delim
A pair of opening and closing delimiters for the templating tags.
Examples
Run this code# see the knit_expand vignette
if (interactive()) browseVignettes(package = "knitr")
Run the code above in your browser using DataLab