These functions are handy for writing Sweave drivers and are considered internal and hence not documented. Look at the source code of the Sweave Latex driver (in this package) or the HTML driver (in the R2HTML package from CRAN) to see how they can be used.
str
(Package: utils) :
Compactly Display the Structure of an Arbitrary R Object
Compactly display the internal structure of an R object, a diagnostic function and an alternative to summary (and to some extent, dput). Ideally, only one line for each ‘basic’ structure is displayed. It is especially well suited to compactly display the (abbreviated) contents of (possibly nested) lists. The idea is to give reasonable output for anyR object. It calls args for (non-primitive) function objects.
These functions locate objects containing particular lines of source code, using the information saved when the code was parsed with keep.source = TRUE.
Compute the approximate string distance between character vectors. The distance is a generalized Levenshtein (edit) distance, giving the minimal possibly weighted number of insertions, deletions and substitutions needed to transform one string into another.
● Data Source:
● Keywords: character
● Alias: adist
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methods
(Package: utils) :
List Methods for S3 Generic Functions or Classes
List all available methods for a S3 and S4 generic function, or all methods for an S3 or S4 class.