Function fastnbt::from_reader

pub fn from_reader<'de, R, T>(bytes: R) -> Result<T>where
    T: Deserialize<'de>,
    R: Read,

Deserialize into a T from some NBT data. See the de module for more information.

let mut decoder = GzDecoder::new(some_reader);
let val: Value = fastnbt::from_reader(decoder)?;