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Ruby: what is the pitfall in this simple code excerpt that tests variable existence
I\'m starting with Ruby, and while making some test samples, I\'ve stumbled against an error in the code that I don\'t understand why it happens.[详细]
2022-12-26 20:52 分类：问答MySQL 5 in MySQL 4 compatible mode for one database?
In a recent project, I have to maintain some PHP code. I set up a development server and installed MySQL, Apache, PHP, ..etc.[详细]
2022-12-26 20:39 分类：问答干辣椒多少钱一斤啊？干辣椒价格多少钱一斤？
Wisdomhusband 2022-04-03 08:22 价格很难把握，但开发者_StackOverflow中文版是从鲜辣椒的价格分析，干辣椒收购价最低5.5元以上。根据国内行情价格还需上涨。《平均5-6斤鲜椒出1斤干椒，保守价5.5元干椒》[详细]
2022-12-26 20:13 分类：问答Complex Django filter question
Lets say I have this class (simplified): class Tag (...): children = models.ManyToManyField(null=True, symmetrical=False)[详细]
2022-12-26 19:51 分类：问答How can I simulate the effects of an observable collection in this situation?
I am making a configuration editor for another application and am using reflection to pull editable fields from the configuration class. The following class is the base class for my various \"DataType[详细]
2022-12-26 19:47 分类：问答最美的时光就只有47集吗？怎么感觉没有演完呢？？
qkoufu99开发者_运维知识库75 2022-04-02 16:23 关注搜狐视频微博有番外篇有三个版本那是三个演员最喜欢也是导演觉得最好的结局就是宋翊跟苏蔓一起[详细]
2022-12-26 19:24 分类：问答《非你莫属》MP3歌词-Tank？
非你莫属 Tank 专辑：延长比赛 语种：国语 流派：Pop 唱片公司：华研国际音乐 发行时间：2007-01-01[详细]
2022-12-26 19:17 分类：问答Browser not loading Php pages
Im using a linux machine, and I followed the instructions seen on http://jm2.php.net/manual/en/install.php to setup php, apache and my sql.[详细]
2022-12-26 18:58 分类：问答《Here am I, little jumping Joan我在这儿蹦蹦跳跳的琼（唱） (节目)》？
Here am I, little jumping Joan我在这儿蹦蹦跳跳的琼（唱） (节开发者_如何学Go目) 启蒙英语丨鹅妈妈经典童谣[详细]
2022-12-26 18:51 分类：问答
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