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A python class that acts like dict
..., has a _dict__ which contains all the object attributes (methods, fields, etc). You do not want to mess around with this unless you want to write code that is modifying itself...
– Raik
Feb 8 '19 at 12:49
...
What is the definition of “interface” in object oriented programming
...s (e.g., cable programming) and has outputs (display on the screen, sound, etc.). However, when you look at a TV that is not plugged in, you are projecting your expected semantics into an interface. For all you know, the TV could just explode when you plug it in. However, based on its "interface" yo...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
...various cluster validity metrics, I came across Dunn's Index, Elbow method etc. wasn't really sure which one to utilize so thought I will start off with the Elbow method.
– Legend
Jul 11 '11 at 17:24
...
What's the $unwind operator in MongoDB?
...NoSQL" approach to data storage, so perish the thoughts of selects, joins, etc. from your mind. The way that it stores your data is in the form of documents and collections, which allows for a dynamic means of adding and obtaining the data from your storage locations.
That being said, in order to u...
Activate a virtualenv via fabric as deploy user
...amp;& '
run(workon + 'git pull')
run(workon + 'do other stuff, etc')
Since version 1.0, Fabric has a prefix context manager which uses this technique so you can for example:
def task():
with prefix('workon myvenv'):
run('git pull')
run('do other stuff, etc')
* ...
What is a Python equivalent of PHP's var_dump()? [duplicate]
...
What about pprint() on enumerate objects, permutations, etc.?
– JSmyth
Nov 23 '14 at 16:33
4
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动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...amic Tracing）技术漫谈dynamic-tracing什么是动态追踪动态追踪的优点DTrace 与 SystemTapSystemTap 在生产上的应用火焰图方法论知识就是力量开源与调试符号Linux 内核的支持硬件追踪死亡进程的遗骸分析传统的调试技
什么是动态追踪
...
How to find the Windows version from the PowerShell command line
...o Windows 10.
Windows 10 has versions of its own: 1507, 1511, 1607, 1703, etc. This is what winver shows.
Powershell:
(Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion").ReleaseId
Command prompt (CMD.EXE):
Reg Query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v Releas...
Convert base-2 binary number string to int
...'{0b1011010:#0}')
>>> bin_2_decimal
90
binary to octal hexa and etc.
>>> f'{0b1011010:#o}'
'0o132' # octal
>>> f'{0b1011010:#x}'
'0x5a' # hexadecimal
>>> f'{0b1011010:#0}'
'90' # decimal
Pay attention to 2 piece of information separated by colon.
I...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
构建高并发高可用的电商平台架构实践一、 设计理念1. 空间换时间1) 多级缓存，静态化客户端页面缓存（http header中包含Expires Cache of Control，last modified(304，...一、 设计理念
1. 空间换时间
1) 多级缓存，静态化
客户端页面缓...