Trait frame_support::pallet_prelude::MaxEncodedLen
source · pub trait MaxEncodedLen: Encode {
fn max_encoded_len() -> usize;
}
Expand description
Items implementing MaxEncodedLen
have a statically known maximum encoded size.
Some containers, such as BoundedVec
, have enforced size limits and this trait
can be implemented accurately. Other containers, such as StorageMap
, do not have enforced size
limits. For those containers, it is necessary to make a documented assumption about the maximum
usage, and compute the max encoded length based on that assumption.
Required Methods§
sourcefn max_encoded_len() -> usize
fn max_encoded_len() -> usize
Upper bound, in bytes, of the maximum encoded size of this item.