courselib/jsonb/position.rs
use serde::{Deserialize, Serialize};
#[derive(Deserialize, Serialize, Debug, Clone, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct Position {
#[serde(skip_serializing_if = "Option::is_none")]
pub x: Option<f64>,
#[serde(skip_serializing_if = "Option::is_none")]
pub y: Option<f64>,
}