juniper_graphql_ws 0.3.0

GraphQL over WebSocket protocol implementation for Juniper
Documentation 
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use serde::{Deserialize, Deserializer};

pub(crate) fn default_for_null<'de, D, T>(deserializer: D) -> Result<T, D::Error>
where
    D: Deserializer<'de>,
    T: Deserialize<'de> + Default,
{
    Ok(Option::<T>::deserialize(deserializer)?.unwrap_or_default())
}