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Do not derive Default on CompactTarget 

It is not immediately obvious what a zero value compact target is.
Because of this and the fact that we are trying to release minimal code
in `primitives 1.0` its best to remove the `Default` derive.

This is an API breaking change.
This commit is contained in:
Tobin C. Harding 2025-05-27 08:09:56 +01:00
parent 5e0b86d2b1
commit e47836fb1e
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primitives/src/pow.rs
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@ -18,7 +18,7 @@ use core::fmt;
/// `CompactTarget` and `Target` is lossy *in both directions* (there are multiple `CompactTarget` /// `CompactTarget` and `Target` is lossy *in both directions* (there are multiple `CompactTarget`
/// values that map to the same `Target` value). Ordering and equality for this type are defined in /// values that map to the same `Target` value). Ordering and equality for this type are defined in
/// terms of the underlying `u32`. /// terms of the underlying `u32`.
#[derive(Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)] #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))] #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct CompactTarget(u32); pub struct CompactTarget(u32);