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Select 50 items from list at random to write to file
... space efficient for sampling from a
large population: sample(xrange(10000000), 60)
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How to add a Timeout to Console.ReadLine()?
.... But every ReadLine you call sits there waiting for input. If you call it 100 times, it creates 100 threads which don't all go away until you hit Enter 100 times!
– Gabe
Dec 19 '11 at 19:17
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Comparing arrays in JUnit assertions, concise built-in way?
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BozhoBozho
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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...ances in each category rather than the percentage.
If you have a total of 100 instances, you're probably stuck with cross validation as no single split is going to give you satisfactory variance in your estimates. If you have 100,000 instances, it doesn't really matter whether you choose an 80:20 s...
Function that creates a timestamp in c#
...for millisecond precision, so you need 3 'f's at the end. Your 4 'f's give 100 microsend precision.
– Evgeniy Berezovsky
Dec 4 '14 at 23:50
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How to generate string of a certain length to insert into a file to meet a file size criteria?
... will automatically generate the files. I know the size of each file, ex. 100KB, and how many files to generate. What I need help with is how to generate a string less than or equal to the required file size.
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Big-oh vs big-theta [duplicate]
...referred over laxness of bound (i.e., bullet 1
below).
T(n) = O(n100), which is identical to T(n) ∈ O(n100)
T(n) = O(n3), which is identical to T(n) ∈ O(n3)
T(n) = Θ(n3), which is identical to T(n) ∈ Θ(n3)
The equivalent English statements are respectively:
T(n)...
Android Center text on canvas
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+100
Center with Paint.getTextBounds():
private Rect r = new Rect();
private void drawCenter(Canvas canvas, Paint paint, String text)...
创业者：在寻找 不迷茫 - 资讯 - 清泛网 - 专注C/C++及内核技术
...寻找资金支持的杨贝明陷入困境。
易合源的启动资金为100万，是杨贝明和创业伙伴一起出资的。初期研发，加上办公和推广费用，现在基本已经用完。他最初设定的是直接从A轮融资开始，数额大概在几千万，不过现在已经降到...
How to retrieve an element from a set without removing it?
...tune in, time it:
from timeit import Timer
stats = [
"for i in range(1000): \n\tfor x in s: \n\t\tbreak",
"for i in range(1000): next(iter(s))",
"for i in range(1000): s.add(s.pop())",
"for i in range(1000): list(s)[0]",
"for i in range(1000): random.sample(s, 1)",
]
for stat ...