return the classes of a list of objects
sclass(x, ...)an S3 object inheriting from class list, or an S4 object.
additional parameters are ignored.
character vector with the class of each list element, or
column name, depending upon the input class(x).
This function takes a list and returns the classes for each
object in the list. In the event an object class has multiple values,
the returned object is a list, otherwise is a vector.
If x is an S4 object, then slotNames(x) is used, and
the class is returned for each S4 slot.
When x is a data.frame, data.table, tibble, or similar
DataFrame table-like object, the class of each column is returned.
For the special case where x is an S4 object with one slotName
".Data", the values in x@.Data are coerced to a list. One
example of this case is with limma::MArrayLM-class.
When x is a matrix, the class of each column is returned for
consistency, even though the class of each column should be identical.
For more more information about a list-like object, including
the lengths/dimensions of the elements, see sdim() or ssdim().
Other jam practical functions:
breakDensity(),
checkLightMode(),
check_pkg_installed(),
colNum2excelName(),
color_dither(),
diff_functions(),
exp2signed(),
fileInfo(),
fixYellow(),
getAxisLabel(),
handleArgsText(),
heads(),
isFALSEV(),
isTRUEV(),
jamba,
jargs(),
kable_coloring(),
lldf(),
log2signed(),
make_html_styles(),
make_styles(),
match_unique(),
mergeAllXY(),
middle(),
minorLogTicks(),
newestFile(),
printDebug(),
renameColumn(),
rmInfinite(),
rmNAs(),
rmNA(),
rmNULL(),
sdim(),
setPrompt()
Other jam list functions:
cPasteSU(),
cPasteS(),
cPasteUnique(),
cPasteU(),
cPaste(),
heads(),
jam_rapply(),
list2df(),
mergeAllXY(),
mixedSorts(),
rbindList(),
relist_named(),
rlengths(),
sdim(),
uniques(),
unnestList()
sclass(list(LETTERS=LETTERS, letters=letters));
#> LETTERS letters
#> "character" "character"
sclass(data.frame(B=letters[1:10], C=2:11))
#> B C
#> "character" "integer"