fp_core/
empty.rs

1pub trait Empty {
2    fn empty() -> Self;
3}
4
5macro_rules! numeric_empty_impl {
6    ($($t:ty)*) => ($(
7        impl Empty for $t {
8            fn empty() -> Self {
9                0
10            }
11        }
12    )*)
13}
14
15numeric_empty_impl! { usize u8 u16 u32 u64 u128 isize i8 i16 i32 i64 i128 }
16
17macro_rules! floating_numeric_empty_impl {
18    ($($t:ty)*) => ($(
19        impl Empty for $t {
20            fn empty() -> Self {
21                0.0
22            }
23        }
24    )*)
25}
26
27floating_numeric_empty_impl! { f32 f64 }
28
29impl<T> Empty for Vec<T> {
30    fn empty() -> Self {
31        Vec::empty()
32    }
33}
34
35impl Empty for String {
36    fn empty() -> Self {
37        String::empty()
38    }
39}
fp_core/empty.rs

fp_core/
empty.rs
