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Function frame_support::storage::hashed::take_or

source · 
pub fn take_or<T, HashFn, R>(hash: &HashFn, key: &[u8], default_value: T) -> T
where
    T: Decode + Sized,
    HashFn: Fn(&[u8]) -> R,
    R: AsRef<[u8]>,
Expand description

Return the value of the item in storage under key, or default_value if there is no explicit entry. Ensure there is no explicit entry on return.