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lines changed Original file line number Diff line number Diff line change @@ -11,9 +11,7 @@ optional second argument `h` is another hash code to be mixed with the result.
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New types should implement the 2-argument form, typically by calling the 2-argument `hash`
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method recursively in order to mix hashes of the contents with each other (and with `h`).
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Typically, any type that implements `hash` should also implement its own [`==`](@ref) (hence
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- [`isequal`](@ref)) to guarantee the property mentioned above. Types supporting subtraction
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- (operator `-`) should also implement [`widen`](@ref), which is required to hash
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- values inside heterogeneous arrays.
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+ [`isequal`](@ref)) to guarantee the property mentioned above.
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The hash value may change when a new Julia process is started.
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