贷款买房都有利息产生的，而利息与利率是息息相关的，房贷利率，就是用房子在银行贷款，并按银行的利率来偿还，那么房贷利率转换了什么时候生效呢？下面看答案。
I have a sample program, which needs to execute 3 methods in a particular order. And after executing each method, should do error handling. Now i did this in a normal fashion, w/o using delegates like
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