机器可以只有加法而没有减法, 这样计算机运算的设计就更简单了. 1-1 = 1 + (-1) = 0 于是人们开始探索将符号位参与运算, 并且只保留加法的方法. 首先来看原码: 一、原码 计算十进制的表达式: 1-1=0 1 - 1 = 1 + (-1) = [00000001]原 + [10000 Read More
posted @ 2017-09-16 15:52 等风来。。 Views(1270) Comments(0) Diggs(0) Edit
1.objenesis About Objenesis is a small Java library that serves one purpose: To instantiate a new object of a particular class. When would you want th Read More
posted @ 2017-09-16 15:43 等风来。。 Views(220) Comments(0) Diggs(0) Edit
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