Struct FnPtr 

pub struct FnPtr { /* private fields */ }

🔬This is a nightly-only experimental API. (type_info #146922)

Function pointer, e.g. fn(u8),

Implementations

impl FnPtr

pub const fn splatted(&self) -> Option<u8>

🔬This is a nightly-only experimental API. (type_info #146922)

Returns the splatted function argument index, or None if no argument is splatted.

e.g. in fn overload(a: u8, #[rustc_splat] b: (f32, usize)) the index is 1, and it can be called as overload(a, 1.0, 2).

pub const fn is_variadic(&self) -> bool

🔬This is a nightly-only experimental API. (type_info #146922)

Whether this function is variadic, e.g. extern “C” fn add(n: usize, mut args: …);

pub const fn is_unsafe(&self) -> bool

🔬This is a nightly-only experimental API. (type_info #146922)

whether this refers to an unsafe function.

pub const fn abi(&self) -> Abi

🔬This is a nightly-only experimental API. (type_info #146922)

Returns the application binary interface. For example extern “C”.

pub const fn inputs(&self) -> &'static [TypeId]

🔬This is a nightly-only experimental API. (type_info #146922)

The types of the functions parameters

pub const fn output(&self) -> TypeId

🔬This is a nightly-only experimental API. (type_info #146922)

List of the types returned by the function. For a function with no output specified this returns TypeId::of<()>.

Trait Implementations

impl Debug for FnPtr

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.