Description Usage Arguments Details Value Examples
Writes a list of function signatures to a file.
1 2 3 4 5 6 7 8 9 10 11 12 13 | write_sigs(x, file = stdout(), ...)
## Default S3 method:
write_sigs(x, file = stdout(), ...)
## S3 method for class 'siglist'
write_sigs(x, file = stdout(), ...)
## S3 method for class 'environment'
write_sigs(x, file = stdout(), ...)
## S3 method for class 'character'
write_sigs(x, file = stdout(), ...)
|
x |
A list of function signatures. See details. |
file |
A file path or connection to write the output to (stdout by default). |
... |
passed to |
Where x
is an object of class |codesiglist, the
function essentially calls writeLines(tostring(x))
.
If the input is a single function signature (of class sig
),
then it is coerced into a siglist
. If the input is an
environment or path to a file, then list_sigs
is called on
the input before writing.
A character vector of the lines that were written to file is invisibly returned. Mostly invoked for the side effect of writing function signatures to a file.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | #Step by step:
#First, list some sigs.
utils_sigs <- list_sigs(pkg2env(utils))
#Without a file argument, sigs are just printed to the console.
head(write_sigs(utils_sigs))
#Write to a file
tmpf <- tempfile("sig", fileext = ".R")
write_sigs(utils_sigs, tmpf)
## Not run:
Open the file we've just written
shell(tmpf, wait = FALSE)
## End(Not run)
#Can also list and write in one line.
tmpf2 <- tempfile("sig", fileext = ".R")
write_sigs(pkg2env(grDevices), tmpf2)
#Single sigs are coerced to siglists
write_sigs(sig(stats::var))
|
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