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How to clear variables in ipython?
Sometimes I rerun a script within the same ipython session and I get bad surprises when variables haven't been cleared. How do I clear all variables?
And is it possible to force this somehow every time I invoke the magic command %run?
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Is it possible to figure out the parameter type and return type of a lambda?
Given a lambda, is it possible to figure out it's parameter type and return type? If yes, how?
4 Answers
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How do I print the elements of a C++ vector in GDB?
..., 30}
To achieve above, you need to have gdb 7 (I tested it on gdb 7.01) and some python pretty-printer. Installation process of these is described on gdb wiki.
What is more, after installing above, this works well with Eclipse C++ debugger GUI (and any other IDE using GDB, as I think).
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Fragment onCreateView and onActivityCreated called twice
I'm developing an app using Android 4.0 ICS and fragments.
5 Answers
5
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Implementing slicing in __getitem__
... a slice object when the object is sliced. Simply look at the start, stop, and step members of the slice object in order to get the components for the slice.
>>> class C(object):
... def __getitem__(self, val):
... print val
...
>>> c = C()
>>> c[3]
3
>>> ...
What is the maximum length of a URL in different browsers?
...under 2000 characters, they'll work in virtually any combination of client and server software.
If you are targeting particular browsers, see below for more details specific limits.
Longer answer - first, the standards...
RFC 2616 (Hypertext Transfer Protocol HTTP/1.1) section 3.2.1 says
The HTTP p...
How should I read a file line-by-line in Python?
...files faster than the garbage collector calls finalizers on orphaned file handles. The usual workaround is to trigger the GC immediately, but this is a nasty hack and it has to be done by every function that could encounter the error, including those in libraries. What a nightmare.
Or you could j...
重磅：nsis产品级完整安装实例源码 - 脚本技术 - 清泛IT社区，为创新赋能！
先看效果：
安装完成后，windows卸载程序的列表中会出现相关信息：
安装目录安装了指定文件：
测试卸载：
源码免费下载：
C#科学计数法转换decimal出错 - .NET(C#) - 清泛IT论坛，有思想、有深度
decimal scientific = decimal.Parse("2.1021E-05")
执行发生异常：“未经处理的异常: System.FormatException: 输入字符串的格式不正确。”
解决方法：
decimal scientific = decimal.Parse("2.1021E-05", System.Globalization.NumberS...