Find All Names in an Expression
Usage
all.names(expr, functions = T,
max.names = 200, unique = F)
all.vars(expr, functions = F,
max.names = 200, unique = T)
Arguments
expr
|
an expression or call from which the names are to be extracted.
|
functions
|
a logical value indicating whether function names should
be included in the result.
|
max.names
|
the maximum number of names to be returned.
|
unique
|
a logical value which indicates whether duplicate names
should be removed from the value.
|
Value
These functions return a character vector containing
all the names which occur in an expression or call.
These functions differ only in the default values for their arguments.Examples
all.names(expression(sin(x+y)))
all.vars(expression(sin(x+y)))