Trait geo::algorithm::TryMapCoordsInplace
source · [−]pub trait TryMapCoordsInplace<T, E> {
fn try_map_coords_inplace(
&mut self,
func: impl Fn((T, T)) -> Result<(T, T), E>
) -> Result<(), E>
where
T: CoordNum;
}
👎Deprecated since 0.21.0:
use MapCoordsInPlace::try_map_coords_in_place
which takes a Coordinate
instead of an (x,y) tuple
Required Methods
👎Deprecated since 0.21.0:
use MapCoordsInPlace::try_map_coords_in_place
which takes a Coordinate
instead of an (x,y) tuple
Map a fallible function over all the coordinates in a geometry, in place, returning a Result
.
Upon encountering an Err
from the function, try_map_coords_in_place
immediately returns
and the geometry is potentially left in a partially mapped state.
Examples
#[allow(deprecated)]
use geo::TryMapCoordsInplace;
let mut p1 = geo::point!{x: 10u32, y: 20u32};
#[allow(deprecated)]
p1.try_map_coords_inplace(|(x, y)| -> Result<_, &str> {
Ok((
x.checked_add(1000).ok_or("Overflow")?,
y.checked_mul(2).ok_or("Overflow")?,
))
})?;
assert_eq!(
p1,
geo::point!{x: 1010u32, y: 40u32},
);