Type Alias ExprStateEvalFunc 

pub type ExprStateEvalFunc = Option<unsafe extern "C-unwind" fn(expression: *mut ExprState, econtext: *mut ExprContext, isNull: *mut bool) -> Datum>;

Aliased Type

pub enum ExprStateEvalFunc {
    None,
    Some(unsafe extern "C-unwind" fn(*mut ExprState, *mut ExprContext, *mut bool) -> Datum),
}

Variants

None

No value.

Some(unsafe extern "C-unwind" fn(*mut ExprState, *mut ExprContext, *mut bool) -> Datum)

Some value of type T.