validate_composerr: Validate an error handler
In a-maldet/composerr: Make Error Handling In R Less Tedious

validate_composerr

R Documentation

Validate an error handler

Check that obj is really an error handler created with composerr().

validate_composerr(obj, err_h, allow_null = TRUE, obj_name = NULL)

`obj`	An error handling function created by `composerr()`.
`err_h`	An error handler called when `obj` is not a valid error handling function created by `composerr()`.
`allow_null`	A logical flag, defining if `obj = NULL` should be allowed.
`obj_name`	An optional string, defining the variable name of `obj`. This string is used for creating a meaningful error message, in case the validation failed. If `obj_name` is omitted, then `obj_name` is calculated by using non-standard-evaluation on `obj`.