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Converting a list to a set changes element order
...sertion order, you can use the keys of a Python dictionary, which starting from Python 3.7 is guaranteed to preserve the insertion order:
>>> a = dict.fromkeys([1, 2, 20, 6, 210])
>>> b = dict.fromkeys([6, 20, 1])
>>> dict.fromkeys(x for x in a if x not in b)
{2: None, 21...
What are the advantages of using a schema-free database like MongoDB compared to a relational databa
...speak french, take a look at this article explaining how to set up MongoDB from scratch.
Edit: I almost forgot to tell you about this railscast by Ryan. It's very interesting and makes you want to start right away!
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Calling the base constructor in C#
If I inherit from a base class and want to pass something from the constructor of the inherited class to the constructor of the base class, how do I do that?
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Reset local repository branch to be just like remote repository HEAD
...ranches push/pull with each other (e.g. if your "master" branch was cloned from "master" in the remote named "origin", then you'll get a line that says "master merges with remote master").
– Dan Moulding
Oct 27 '09 at 13:51
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iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...11行，那么程序就会停在11行（注意：程序只运行到了前10行，第11行其实还没有被执行！！！）。只要在代码行旁边点击，就能添加一个断点，再次点击，就能让断点不可用（disable了，仍然存在，只是不起作用了）。在某一行创...
How do I convert a git repository to mercurial?
...using TortoiseHg, it can be enabled by using the Global Settings menu item from the TortoiseHg shell extension menu in the Extensions section under Global Settings.
– Umar Farooq Khawaja
May 2 '14 at 12:22
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How Scalable is SQLite? [closed]
...ccasionally getting a database locked error when trying to execute queries from the shell in sqlite. That said, I am running another site from SQLite just fine. The difference is that the site is static (i.e. I'm the only one that can change the database) and so it works just fine for concurrent rea...
What good technology podcasts are out there?
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All from General Software are great! And I can see, that 43 Folders are broadcastin again!
– Tomasz Tybulewicz
Mar 13 '09 at 10:44
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Namespace + functions versus static methods on a class
...er functions". I found an online reference to this principle in an article from Herb Sutter: http://www.gotw.ca/gotw/084.htm
The important thing to know is that: In C++ functions in the same namespace as a class belong to that class' interface (because ADL will search those functions when resolving...
How can you tell when a layout has been drawn?
...e Layout has not been drawn yet, and so layout.getMeasuredHeight() returns 0.
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