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摘要： 基础 函数是一等公民 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22val squareVal = (a: Int) => a * a def addOne(f: Int => Int, arg: Int) = f(arg) + 1 println("squareVal(2):" squareVal(2)) ... 阅读全文