Function deserialize_as_number_or_string

pub fn deserialize_as_number_or_string<'de, D>(de: D) -> Result<f64, D::Error>
where
    D: Deserializer<'de>,

Take either a floating point number or a string and deserialize to an floating-point number.

To be used like this: #[serde(deserialize_with = "deserialize_as_number_or_string")]