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With bash, how can I pipe standard error into another process?
... >(process2)
Here is a concrete example that sends stderr to both the screen and appends to a logfile
sh myscript 2> >(tee -a errlog)
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A simple explanation of Naive Bayes Classification
... & part two being the confusion surrounding Training set.
In general all of Machine Learning Algorithms need to be trained for supervised learning tasks like classification, prediction etc. or for unsupervised learning tasks like clustering.
During the training step, the algorithms are taught...
python: How do I know what type of exception occurred?
I have a function called by the main program:
15 Answers
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Best way to require all files from a directory in ruby?
What's the best way to require all files from a directory in ruby ?
11 Answers
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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
...这对大多数应用来说都可以容忍了。从1.9.2+，mongodb都会默认打开journal功能，以确保数据安全。而且journal的刷新时间是可以改变的，2-300ms的范围,使用 –journalCommitInterval 命令。Oplog和数据刷新到磁盘的时间是60s，对于复制来...
What are metaclasses in Python?
...ass is an instance of a metaclass.
While in Python you can use arbitrary callables for metaclasses (like Jerub shows), the better approach is to make it an actual class itself. type is the usual metaclass in Python. type is itself a class, and it is its own type. You won't be able to recreate somet...
Usage of __slots__?
What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not?
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Should I use a class or dictionary?
...ould your __init__ code go?
Classes are for bundling related data (and usually code).
Dictionaries are for storing key-value relationships, where usually the keys are all of the same type, and all the values are also of one type. Occasionally they can be useful for bundling data when the key/attri...
How to enumerate an object's properties in Python?
...oes not return dynamic members (i.e., object attributes and methods dynamically defined by that object's __getattr__() method or similar magic). In all likelihood, your desired file.ImplementationName property is defined dynamically and hence not available to vars() or dir().
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List all indexes on ElasticSearch server?
I would like to list all indexes present on an ElasticSearch server. I tried this:
22 Answers
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