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This allows using a closure to produce the message only when the `Button` is actually pressed. Useful when generating the message may be expensive.
hecrj
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I think this can help with relaxing the clone requirement on the Message, If the current |
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I don't see the point in adding an unnecessary heap allocation. Messages should be cloneable and other widgets demand that bound as well, like |
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This allows using a closure to produce the message only when the
Buttonis actually pressed. Useful when generating the message may be expensive.