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Implementing slicing in __getitem__
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121
The __getitem__() method will receive a slice object when the object is sliced. Simply look at ...
how to concatenate two dictionaries to create a new one in Python? [duplicate]
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279
Slowest and doesn't work in Python3: concatenate the items and call dict on the resulting lis...
How to compare two floating point numbers in Bash?
...e conveniently using Bash's numeric context:
if (( $(echo "$num1 > $num2" |bc -l) )); then
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fi
Explanation
Piping through the basic calculator command bc returns either 1 or 0.
The option -l is equivalent to --mathlib; it loads the standard math library.
Enclosing the whole expression ...
Difference between Divide and Conquer Algo and Dynamic Programming
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answered Nov 24 '12 at 5:55
OneMoreErrorOneMoreError
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Why is there no Tree class in .NET?
...ook at C5? It's super-handy and they have several tree implementations (1, 2, 3).
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Flatten an Array of Arrays in Swift
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Swift >= 3.0
reduce:
let numbers = [[1,2,3],[4],[5,6,7,8,9]]
let reduced = numbers.reduce([], +)
flatMap:
let numbers = [[1,2,3],[4],[5,6,7,8,9]]
let flattened = numbers.flatMap { $0 }
joined:
let numbers = [[1,2,3],[4],[5,6,7,8,9]]
let joined = Array(number...
`elif` in list comprehension conditionals
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259
Python's conditional expressions were designed exactly for this sort of use-case:
>>>...
Convert list of dictionaries to a pandas DataFrame
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edited Jul 22 at 17:24
cs95
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将 App Inventor 2 项目连接到外部传感器 · App Inventor 2 中文网
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将 App Inventor 2 项目连接到外部传感器
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将 App Inventor 2 项目连接到外部传感器
Note: This report describes work carried out in Spring 2014 for an Undergraduate A...
How can I remove an element from a list?
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227
I don't know R at all, but a bit of creative googling led me here: http://tolstoy.newcastle.ed...