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Creating a singleton in Python
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class Logger(object):
__metaclass__ = Singleton
Or in Python3
class Logger(metaclass=Singleton):
pass
If you want to run __init__ every time the class is called, add
else:
cls._instances[cls].__init__(*args, **kwargs)
to the if statement in Singleton.__call__...
How can I list ALL grants a user received?
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DCookieDCookie
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Where are shared preferences stored?
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243
SharedPreferences are stored in an xml file in the app data folder, i.e.
/data/data/YOUR_PACKAG...
一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
...设备发出一个150个字节的MTU请求，但是从设备回应MTU是23字节，那么今后双方要以较小的值23字节作为以后的MTU），主从双方约定每次在做数据传输时不超过这个最大数据单元。
MTU交换通常发生在主从双方建立连接关...
Capturing Ctrl-c in ruby
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133
The problem is that when a Ruby program ends, it does so by raising SystemExit. When a control...
Check if class already assigned before adding
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edited Aug 24 '15 at 13:07
Robert Koritnik
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Git push existing repo to a new and different remote repo server?
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edited Aug 11 '13 at 10:24
answered Mar 3 '11 at 14:23
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Python hashable dicts
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answered Jul 20 '09 at 4:30
UnknownUnknown
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How to check whether a file is empty or not?
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361
>>> import os
>>> os.stat("file").st_size == 0
True
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How do you keep user.config settings across different assembly versions in .net?
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238
ApplicationSettingsBase has a method called Upgrade which migrates all settings from the previo...