SWI-Prolog -- setting/2

Documentation
- Reference manual
  - The SWI-Prolog library
    - library(settings): Setting management
- Packages

Availability::- use_module(library(settings)).(can be autoloaded)

[nondet]setting(:Name, ?Value)

True when Name is a currently defined setting with Value. Note that setting(Name, Value) only enumerates the settings of the current module. All settings can be enumerated using setting(Module:Name, Value). This predicate is det if Name is ground.

Errors: existence_error(setting, Name)