pub trait ToStableHashKey<HCX> {
    type KeyType: Ord + Sized + HashStable<HCX>;

    // Required method
    fn to_stable_hash_key(&self, hcx: &HCX) -> Self::KeyType;
}
Expand description

Implement this for types that can be turned into stable keys like, for example, for DefId that can be converted to a DefPathHash. This is used for bringing maps into a predictable order before hashing them.

Required Associated Types§

Required Methods§

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fn to_stable_hash_key(&self, hcx: &HCX) -> Self::KeyType

Implementations on Foreign Types§

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impl<HCX, T1: ToStableHashKey<HCX>, T2: ToStableHashKey<HCX>> ToStableHashKey<HCX> for (T1, T2)

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type KeyType = (<T1 as ToStableHashKey<HCX>>::KeyType, <T2 as ToStableHashKey<HCX>>::KeyType)

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fn to_stable_hash_key(&self, hcx: &HCX) -> Self::KeyType

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impl<HCX> ToStableHashKey<HCX> for String

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