Get or set function body
fn_body() is a simple wrapper around base::body(). It always
returns a \{ expression and throws an error when the input is a
primitive function (whereas body() returns NULL). The setter
version preserves attributes, unlike body<-.
fn_body(fn = caller_fn()) fn_body(fn) <- value
fn |
A function. It is lookep up in the calling frame if not supplied. |
value |
New formals or formals names for |
# fn_body() is like body() but always returns a block: fn <- function() do() body(fn) fn_body(fn) # It also throws an error when used on a primitive function: try(fn_body(base::list))
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