2014年9月4日
ruby中nil?, empty? and blank?
摘要： In Ruby, you check withnil?if an object is nil:article = nilarticle.nil? # => trueempty?checks if an element - like a string or an array f.e. - is em... 阅读全文
posted @ 2014-09-04 09:11 zhangsai 阅读(514) 评论(0) 推荐(0)