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| Language | Swift |
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| Owner | w3xue |
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| Visibility | Public |
func sum(a: Int, b: Int) -> Int {
return a + b
}
var addition: (Int, Int) -> Int = sum
print("输出结果: \(addition(40, 89))")
func another(addition: (Int, Int) -> Int, a: Int, b: Int) {
print("输出结果: \(addition(a, b))")
}
another(addition: sum, a: 10, b: 20)
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