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What is the difference between map and flatMap and a good use case for each?
Can someone explain to me the difference between map and flatMap and what is a good use case for each?
16 Answers
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Assignment inside lambda expression in Python
...(
__init__ = lambda self, radius, height: sub(
setattr(self, 'radius', radius),
setattr(self, 'height', height)),
volume = property(lambda self: fun(
['def' for top_area in [math.pi * self.radius ** 2]],
self.h...
How do I typedef a function pointer with the C++11 using syntax?
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How to overcome TypeError: unhashable type: 'list'
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Internally, hash() method calls __hash__() method of an object which are set by default for any object.
Converting a nested list to a set
>>> a = [1,2,3,4,[5,6,7],8,9]
>>> set(a)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unh...
How can I fill out a Python string with spaces?
I want to fill out a string with spaces. I know that the following works for zero's:
13 Answers
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Output array to CSV in Ruby
...ically extracting certain columns from the original census table into a subset.
– tamouse
Nov 13 '13 at 16:46
3
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How to add leading zeros for for-loop in shell? [duplicate]
... so you can either install macports and use its version of seq, or you can set the format explicitly:
seq -f '%02g' 1 3
01
02
03
But given the ugliness of format specifications for such a simple problem, I prefer the solution Henk and Adrian gave, which just uses Bash. Apple can't scr...
How to get method parameter names?
Given the Python function:
15 Answers
15
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Call Go functions from C
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Postfix日常维护队列管理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Postfix日常维护队列管理postfix有四种不同的邮件队列，并且由队列管理进程统一进行管理： 1． maildrop：本地邮件放置在maildrop中，同时也被拷贝到incoming中...postfix有四种不同的邮件队列，并且由队列管理进程统一进行管理：
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