var_names {nuggets} | R Documentation |
Extract variable names from predicates
Description
The function assumes that x
is a vector of predicate names, i.e., a character
vector with elements compatible with pattern <varname>=<value>
. The function
returns the <varname>
part of these elements. If the string does not
correspond to the pattern <varname>=<value>
, i.e., if the equal sign (=
)
is missing in the string, the whole string is returned.
Usage
var_names(x)
Arguments
x |
A character vector of predicate names. |
Value
A <varname>
part of predicate names in x
.
Author(s)
Michal Burda
Examples
var_names(c("a=1", "a=2", "b=x", "b=y")) # returns c("a", "a", "b", "b")
[Package nuggets version 1.4.0 Index]