Web Reference: Feb 2, 2019 · By omitting the parentheses, you are passing the function itself as a parameter. If you added the parentheses, the function would be executed and you would pass the return of the function to the widget. Oct 22, 2025 · This is a closure that takes the same parameters as the function and invokes the underlying function when you call it. If your code needs a closure that invokes a named function with the same parameters as the closure accepts, don't wrap the call in a lambda. Jan 8, 2022 · Since Flutter 2.5: the concept, Tear Off has been embraced. It is simply passing a function as a parameter without calling it so the underlying Widget can use it later as shown below.
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Flutter Passing Function Parameter Between Net Worth 2026: Salary, Income & Wealth Net Worth & Biography
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