Register a data loader

Appends fun to the internal data-loader registry (.fundsr$data_loaders). Registered functions are intended to be run sequentially in registration order.

Usage

add_data_loader(fun)

Arguments

fun

A function to register. Must take no arguments.

Value

Invisibly returns the updated .fundsr$data_loaders list.

Details

If a loader with the same function body is already registered, fun is not added again.

Examples

add_data_loader(function() NULL)