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Evaluate provides tools that allow you to recreate the parsing, evaluation and
display of R code, with enough information that you can accurately recreate what
happens at the command line. Evaluate + replay works very similarly to
source()
, but is written in such a way to make it easy to adapt for other
output formats, such as html or latex.
There are three components to the evaluate
package:
parse_all
, a version of parse that keeps expressions with their original
source code, maintaining formatting and comments.evaluate
, which evaluates each expression produced by parse_all
,
tracking all output, messages, warnings, and errors as their occur, and
interleaving them in the correct order with the original source and value
of the expression.replay
, which outputs these pieces in a way that makes it look like you've
entered the code at the command line. This function also serves as a
template for other output formats.Any scripts or data that you put into this service are public.
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