map
fun A_MapBin.mapBinRemoveKeyHashCanDestroy( key: A_BasicObject, keyHash: Int, canDestroy: Boolean): A_MapBin
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Answer a map bin like the receiver, but with the given key excluded. If the key does not occur in the receiver, answer the same map bin, or an equivalent. If canDestroy is true and the receiver is mutable, the receiver can be modified and/or returned as the result.
Return
The new map bin, or the updated receiver.
Parameters
key
The key to exclude.
key
The precomputed hash value of the key.
can
Whether the receiver can be destroyed/reused if it's also mutable.