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STL 算法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...class Dist> size_t count_if(InIt first, InIt last, Pred pr);
equal_range
<algorithm>
功能类似equal，返回一对iterator，第一个表示lower_bound，第二个表示upper_bound
函数原形
template<class FwdIt, class T> pair<FwdIt, FwdIt> equal_range(FwdIt first, FwdIt ...
Learning Python from Ruby; Differences and Similarities
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s = 'string-with-palindromes-like-abbalabba'
l = len(s)
[s[x:y] for x in range(l) for y in range(x,l+1) if p(s[x:y])]
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Convert Datetime column from UTC to local time in select statement
...n March
@FSN datetime -- First Sunday in November
-- get DST Range
set @SSM = datename(year,@UTC) + '0314'
set @SSM = dateadd(hour,2,dateadd(day,datepart(dw,@SSM)*-1+1,@SSM))
set @FSN = datename(year,@UTC) + '1107'
set @FSN = dateadd(second,-1,dateadd(hour,2,dateadd(da...
Why static classes cant implement interfaces? [duplicate]
In my application I want to use a Repository that will do the raw data access ( TestRepository , SqlRepository , FlatFileRepository etc).
Because such a repository would be used throughout the runtime of my application it seemed like a sensible thing to me to make it a static class so I could go
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Creating range in JavaScript - strange syntax
I've run into the following code in the es-discuss mailing list:
4 Answers
4
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Execute bash script from URL
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You can also do this:
wget -O - https://raw.github.com/luismartingil/commands/master/101_remote2local_wireshark.sh | bash
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Keyboard Interrupts with python's multiprocessing Pool
...ify a timeout. To do that, replace
results = pool.map(slowly_square, range(40))
with
results = pool.map_async(slowly_square, range(40)).get(9999999)
or similar.
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RAII and smart pointers in C++
...ake sure that we close the file once we've finished with it. This has two drawbacks - firstly, wherever we use File, we will have to called File::close() - if we forget to do this, we're holding onto the file longer than we need to. The second problem is what if an exception is thrown before we clos...
How to split/partition a dataset into training and test datasets for, e.g., cross validation?
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from sklearn.model_selection import train_test_split
data, labels = np.arange(10).reshape((5, 2)), range(5)
data_train, data_test, labels_train, labels_test = train_test_split(data, labels, test_size=0.20, random_state=42)
This way you can keep in sync the labels for the data you're trying to ...
How does this print “hello world”?
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Interesting!
Standard ASCII characters which are visible are in range of 32 to 127.
That's why you see 32, and 95 (127 - 32) there.
In fact each character is mapped to 5 bits here, (you can find what is 5 bit combination for each character), and then all bits are concatenated to form a ...