效率的提升，并不是少写了代码，而是减少了反复试错和信息查找的时间。
She was so good in fact that she was soon promoted to commander, in another first.。同城约会对此有专业解读
。51吃瓜对此有专业解读
[[ anyRcv isNil ifTrue: anyBlock ] -> [ anyRcv ifNil: anyBlock ]] brewrite preview
20 monthly gift articles to share，更多细节参见夫子
第三节 侵犯人身权利、财产权利的行为和处罚