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Concatenate multiple result rows of one column into one, group by another column [duplicate]
I'm having a table like this
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wget command to download a file and save as a different filename
I am downloading a file using the wget command. But when it downloads to my local machine, I want it to be saved as a different filename.
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Sorting a set of values [closed]
...want to sort each set.
That's easy. For any set s (or anything else iterable), sorted(s) returns a list of the elements of s in sorted order:
>>> s = set(['0.000000000', '0.009518000', '10.277200999', '0.030810999', '0.018384000', '4.918560000'])
>>> sorted(s)
['0.000000000', '0...
How to sort an ArrayList in Java [duplicate]
... of this class and adding each fruit in the list. I want to sort this list based on the order of fruit name.
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Only mkdir if it does not exist [duplicate]
In my bash script I do:
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5
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How to do integer division in javascript (Getting division answer in int not float)? [duplicate]
... division, I mean getting division answer in int, not in floating point number.
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Transitivity of Auto-Specialization in GHC
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"is the auto-specialization transitive?"
Should I only expect (+) to be specialized transitively with an explicit pragma?
(apparently intended) Is this a bug of GHC? Is it inconsistent with the documentation?
AFAIK, the answers are No, mostly yes but there are other means, and No.
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Convert generator object to list for debugging [duplicate]
When I'm debugging in Python using IPython, I sometimes hit a break-point and I want to examine a variable that is currently a generator. The simplest way I can think of doing this is converting it to a list, but I'm not clear on what's an easy way of doing this in one line in ipdb , since I'm so n...
千万别惹程序员 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...瑞士军刀，说明是用来做细活的工具。C语言的刀上有个USB，说明是可以做硬件操作的。C++的刀是什么都有，说明C++是一种功能繁多的语言。（图中C++的那把瑞士军刀很强大，不要以为其是虚构的，这把刀是真实存在的，叫Wenger...
代码坏味道(总结) - C/C++ - 清泛网 - 专注C/C++及内核技术
...次一起出现，这时应该提取数据结构。
9.Primitive Obsession（基本类型偏执）
使用过多的基本数据类型，这时应该提取数据结构。
10.Switch Statements（switch惊悚现身）
不要过多使用switch，可以考虑用多态代替。
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