The built-in helper library — null-tolerant utility functions for collection
membership, string and numeric operations, and type checks. Most are pure;
the stochastic rand and roll helpers are the deliberate exceptions.
Helpers are the only callable values in the expression language. These
built-ins are always present in the expressionHelpers registry;
worlds may add further helpers from a JSON file (see HelperSource).
The built-in helper library — null-tolerant utility functions for collection membership, string and numeric operations, and type checks. Most are pure; the stochastic
randandrollhelpers are the deliberate exceptions.Helpers are the only callable values in the expression language. These built-ins are always present in the expressionHelpers registry; worlds may add further helpers from a JSON file (see HelperSource).