Type Alias playdate_sys::ffi::writeFunc

pub type writeFunc = Option<unsafe extern "C" fn(userdata: *mut c_void, str_: *const c_char, len: c_int)>;

Aliased Type

enum writeFunc {
    None,
    Some(unsafe extern "C" fn(_: *mut c_void, _: *const i8, _: i32)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *mut c_void, _: *const i8, _: i32))

Some value of type T.

Trait Implementations

impl<R, A, B, C> OkOrNullFnErr<unsafe extern "C" fn(_: A, _: B, _: C) -> R> for Option<unsafe extern "C" fn(_: A, _: B, _: C) -> R>

type Error = NullPtrError

fn ok_or_null( self ) -> Result<unsafe extern "C" fn(_: A, _: B, _: C) -> R, NullPtrError>

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size:4 bytes

Size for each variant:

• None: 0 bytes
• Some: 4 bytes