assert_subset {assertions} | R Documentation |
Check if a vector is a subset of another
Description
This function checks that x
is a subset of y
Usage
assert_subset(x, y, msg = NULL, call = rlang::caller_env(), arg_name = NULL)
Arguments
x |
A vector to check |
y |
the acceptible values that x can take |
msg |
The error message thrown if the assertion fails (string) |
call |
Only relevant when pooling assertions into multi-assertion helper functions. See cli_abort for details. |
arg_name |
Advanced use only. Name of the argument passed (default: NULL, will automatically extract arg_name). |
Value
Returns invisible(TRUE) if x
is a subset of y
, otherwise throws an error
Examples
try({
assert_subset(1:3, 1:5) # Passes
assert_subset(c("A", "B", "C"), c("A", "B")) # Throws error since "C" is not present in first vector
})
[Package assertions version 0.1.0 Index]