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Why do some functions have underscores “__” before and after the function name?
This "underscoring" seems to occur a lot, and I was wondering if this was a requirement in the Python language, or merely a matter of convention?
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C-like structures in Python
Is there a way to conveniently define a C-like structure in Python? I'm tired of writing stuff like:
25 Answers
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Custom views with Storyboard
In complex screens (View Controllers) I used to separate the whole thing in smaller pieces (I call them widgets). These widgets consist basically of a MyWidget.h and a MyWidget.m file as well as a MyWidget.xib file, where the root element is a UIView and the MyWidget class is the File Owner ...
Javascript replace with reference to matched group?
...uld (therefore) look like hello <div>there</div> . The string might contain multiple pairs of underscores.
3 A...
What is the difference between libsqlite3.dylib and libsqlite3.0.dylib?
I'm getting started with SQLite databases in an app I'm working on. I've not run into issues yet but one of the early steps from this tutorial is linking the SQLite3 framework. The tutorial calls for libsqlite3.0.dylib but I noticed another one libsqlite3.dylib. Is the latter just a symlink to ...
IntelliJ Split Window Navigation
...ndow (horizontal or vertical) into N tab groups, how do I switch/toggle from one tab group to another via the keyboard? If all of the tabs are in the same group you can switch from each tab easily (CTRL + right/left arrow), but when they're in separate tab groups I can't. I've searched through the...
Swift 编程语言入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...wift 编程语言入门教程本文从其发布的书籍《The Swift Programming Language》中摘录和提取而成。希望对各位的iOS&OSX开发有所帮助。今天在网上看到一篇非常好的教程，分享给大家
原文地址：http://gashero.iteye.com/blog/2075324
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What does the KEY keyword mean?
In this MySQL table definition:
2 Answers
2
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SQL UPDATE all values in a field with appended string CONCAT not working
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That's pretty much all you need:
mysql> select * from t;
+------+-------+
| id | data |
+------+-------+
| 1 | max |
| 2 | linda |
| 3 | sam |
| 4 | henry |
+------+-------+
4 rows in set (0.02 sec)
mysql> update...