Polymorphic copy: Difference between revisions
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=={{header|Nimrod}}== |
=={{header|Nimrod}}== |
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<lang nimrod>type |
<lang nimrod>type |
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T = object of TObject |
T = ref object of TObject |
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myValue: string |
myValue: string |
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S1 = object of T |
S1 = ref object of T |
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S2 = object of T |
S2 = ref object of T |
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method speak(x: T) = echo "T Hello ", x.myValue |
method speak(x: T) = echo "T Hello ", x.myValue |
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echo "Making copy of a as u, colors and types should match" |
echo "Making copy of a as u, colors and types should match" |
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u.deepCopy(a) |
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u = a |
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u.speak |
u.speak |
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a.speak |
a.speak |
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Assigning new color to u. Since u,b references same object b's color changes as well |
Assigning new color to u. Since u,b references same object b's color changes as well |
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S2 Woof Yellow |
S2 Woof Yellow |
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S2 Woof |
S2 Woof Yellow</pre> |
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=={{header|Objective-C}}== |
=={{header|Objective-C}}== |
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