cnd_signal() takes a condition as argument and emits the corresponding signal. The type of signal depends on the class of the condition:

  • A message is signalled if the condition inherits from "message". This is equivalent to signalling with inform() or base::message().

  • A warning is signalled if the condition inherits from "warning". This is equivalent to signalling with warn() or base::warning().

  • An error is signalled if the condition inherits from "error". This is equivalent to signalling with abort() or base::stop().

  • An interrupt is signalled if the condition inherits from "interrupt". This is equivalent to signalling with interrupt().

cnd_signal(cnd, ...)

Arguments

cnd

A condition object (see cnd()). If NULL, cnd_signal() returns without signalling a condition.

...

These dots are for future extensions and must be empty.

See also

Examples

# The type of signal depends on the class. If the condition # inherits from "warning", a warning is issued: cnd <- warning_cnd("my_warning_class", message = "This is a warning") cnd_signal(cnd)
#> Warning: This is a warning
# If it inherits from "error", an error is raised: cnd <- error_cnd("my_error_class", message = "This is an error") try(cnd_signal(cnd))
#> Error : This is an error