Get package parameter

Get package parameter

get_param(param, package = NULL, fallback = NULL)

Arguments

param

parameter to get
package

package of the parameter (NULL if running from a package)
fallback

what to do if parameter not found

Value

value of param in package package and fallback if parameter not found

Examples


register_param('param1', 'tgconfig')
set_param('param1', 'value1', 'tgconfig')
get_param('param1', 'tgconfig')
#> [1] "value1"

# try to get a parameter that doesn't exist
get_param('other_param', 'tgconfig')
#> NULL

# sometimes we want to throw and error if the parameter doesn't exist
# get_param('other_param', 'tgconfig', fallback=stop()) # would trow and error