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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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15
Task/Delegates/Julia/delegates-1.julia Normal file
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module Delegates
export Delegator, Delegate
struct Delegator{T}
delegate::T
end
struct Delegate end
operation(x::Delegator) = thing(x.delegate)
thing(::Any) = "default implementation"
thing(::Delegate) = "delegate implementation"
end # module Delegates

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Task/Delegates/Julia/delegates-2.julia Normal file
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using .Delegates
a = Delegator(nothing)
b = Delegator("string")
d = Delegate()
c = Delegator(d)
@show Delegates.operation(a)
@show Delegates.operation(b)
@show Delegates.operation(c)