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Truncating all tables in a Postgres database
...ote: Since table names are not unique per database, you have to schema-qualify table names to be sure. Also, I limit the function to the default schema 'public'. Adapt to your needs, but be sure to exclude the system schemas pg_* and information_schema.
Be very careful with these functions. They nu...
Mysql - How to quit/exit from stored procedure
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@jlh it was wrong (text corrected now) in that I didn’t know about mysql’s label technique, but the code isn’t wrong - it will work, on any DB actually.
– Bohemian♦
Nov 21 '18 at 14:53
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How to find list intersection?
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If order is not important and you don't need to worry about duplicates then you can use set intersection:
>>> a = [1,2,3,4,5]
>>> b = [1,3,5,6]
>>> list(set(a) & set(b))
[1, 3, 5]
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Hidden features of Ruby
Continuing the "Hidden features of ..." meme, let's share the lesser-known but useful features of Ruby programming language.
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App Inventor 2 上传文件到服务器的方案全总结 - App Inventor 2 中文网 - ...
...# 后面的路径可以自己定义
api.add_resource(receive_pic,'/test')
if __name__ == '__main__':
app_port = 8081
app.run(host="0.0.0.0", port=app_port, debug=True)
复制代码参考：https://blog.csdn.net/heko220/article/details/97644883
How can I multiply and divide using only bit shifting and adding?
How can I multiply and divide using only bit shifting and adding?
14 Answers
14
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Static nested class in Java, why?
... @DavidS Thanks for the link! Yeah, I was wrong, reading my comment now I see that my rephrase was incorrect. As you said: An inner class interacts with the instance members through an implicit reference to its enclosing class, and this points out another interesting property of non-static in...
界面布局组件 · App Inventor 2 中文网
...1.SetBadge(2, "3")
}
when 滑动分页1.PageChanged(索引, 标题) {
if 索引 == 2 {
滑动分页1.SetBadge(2, "")
}
}
运行后左右滑动或点标签切换页面；「关注」标签带一个红色角标「3」，切到这一页后角标消失。
新手引导页
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Disable individual Python unit tests temporarily
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In Python 3, Akif's answer below @unittest.SkipTest works and not @unittest.skip
– lifebalance
May 13 '17 at 18:48
7
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What algorithm does Readability use for extracting text from URLs?
...gave it up as a problem that cannot be accurately determined. (I've tried different ways but none were reliable)
4 Answers
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