Function postgres_protocol::types::range_to_sql

pub fn range_to_sql<F, G>(lower: F,
                          upper: G,
                          buf: &mut Vec<u8>)
                          -> Result<(), Box<Error + Sync + Send>> where F: FnOnce(&mut Vec<u8>) -> Result<RangeBound<IsNull>, Box<Error + Sync + Send>>,
        G: FnOnce(&mut Vec<u8>) -> Result<RangeBound<IsNull>, Box<Error + Sync + Send>>

Serializes a range value.