println("The answer is " + str(42));len(array) — Get the length of an array as an int:
改造中，斑驳的红砖墙、铁框木窗被悉心保留，连园区大门都是用原厂房的航吊改造而成。看着这台“老伙计”，年逾七十的老工人于文学眼眶湿润。如今，他喜欢坐在由老车间改建的茶馆里，与老同事们叙旧。，更多细节参见新收录的资料
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waiting for exactly the right circumstances to arise.。新收录的资料对此有专业解读
fn main() - int {