Get a Quarto parameter value — get

Returns a value from `params` when available, otherwise evaluates an optional default function.

get_param(name, default_fun = NULL, ...)

Arguments

name: Character scalar. Name of the parameter to retrieve.
default_fun: Optional function used to compute a default value when the parameter is missing or `NULL`.
...: Additional arguments passed to `default_fun`.

The parameter value if found and not `NULL`; otherwise the return value from `default_fun(...)` when provided; otherwise `NULL`.

get_param("missing")
#> NULL
get_param("x", function() 42)
#> [1] 42