也许有很多人在怀疑我，因为他们相信计划的未来更美好，但是如果你像我一样并且你偶尔也想为某件事孤注一掷，那么你的人生是不可预测的！
Don't get me wrong — it's good to plan for the future, but if you're like me and you occasionally want to swing for the fences you can't count on a predictable life.
将变量掷为布尔类型是不可靠的，但是下面两者方式均可成立。
Casting the variable to a Boolean type is unreliable, but each of the following alternatives will work.
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