Parametric polymorphism: Difference between revisions
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Fortunately, we can simulate PP by passing an extra parameter to a collection class's contructor to specify the type of values to be used for that particular instantiation. We can then use this to guard against the wrong type of values being passed to the class's other methods.
<syntaxhighlight lang="
construct new(T, value) {
if (!(T is Class)) Fiber.abort ("T must be a class.")
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