JavaFX 绑定/循环问题

Question

好的，我正在学习 JavaFX with Passion 课程，但有一个我似乎无法解决的问题。

和这个问题差不多——

Why doesn't this "binding" code work as expected in JavaFX?

def numbers = [1..10];
var currentNumber = 0;    

for (currentNumber in numbers){
var evenOrOdd = bind if (numbers[currentNumber] mod 2 == 0)
    "----{numbers[currentNumber]} is an even number"
    else "----{numbers[currentNumber]} is an odd number";
println("{evenOrOdd}");
}

和我的输出 -

----2 is an even number
----3 is an odd number
----4 is an even number
----5 is an odd number
----6 is an even number
----7 is an odd number
----8 is an even number
----9 is an odd number
----10 is an even number
----0 is an even number

我遇到的问题是它“看起来”运行正常，只是它没有将 1 显示为奇数，然后它在 10 之后添加了一个 0。我花了一些时间逐步完成程序并且可以似乎不知道它是如何/为什么这样做的。

我可以让它在没有任何绑定的情况下运行良好，所以不确定这是否是导致我的问题的原因。

有什么想法/想法吗？

~艾伦

Answer 1

currentNumber 是数字的元素之一，而不是索引

var evenOrOdd = bind if (currentNumber mod 2 == 0)
    "----{currentNumber} is an even number"
    else "----{currentNumber} is an odd number";