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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
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RUN_GTEST(ArrayTest, NormalExample, @);
array<int, 5> a = { 1, 2, 3 };
psln(a.size()); // a.size() = 5;
psln(a.max_size()); // a.max_size() = 5;
EXPECT_FALSE(a.empty()); // empty() is false.
printContainer(a, "array: "); ...
What are the differences between json and simplejson Python modules?
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wim
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answered Apr 3 '09 at 6:59
Devin JeanpierreDevin Jeanpierre
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Regular expression for matching HH:MM time format
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375
Your original regular expression has flaws: it wouldn't match 04:00 for example.
This may work ...
Validating IPv4 addresses with regexp
...dation, but without much luck. It seemed at one point I had had it with (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?(\.|$)){4} , but it produces some strange results:
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How do you detect Credit card type based on number?
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+50
The credit/debit card number is referred to as a PAN, or Primary Account Number. The first six digits of the PAN are taken from the ...
Applying a function to every row of a table using dplyr?
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alexwhanalexwhan
13.8k55 gold badges4545 silver badges6464 bronze badges
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What is the best regular expression to check if a string is a valid URL?
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How to slice an array in Bash
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edited Jul 24 '18 at 16:35
Nicholas Pipitone
3,33511 gold badge1717 silver badges3333 bronze badges
ans...
how does multiplication differ for NumPy Matrix vs Array classes?
...nd it more trouble than it's worth, though.
For arrays (prior to Python 3.5), use dot instead of matrixmultiply.
E.g.
import numpy as np
x = np.arange(9).reshape((3,3))
y = np.arange(3)
print np.dot(x,y)
Or in newer versions of numpy, simply use x.dot(y)
Personally, I find it much more readab...
Bomb dropping algorithm
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5
@beaker, please read the problem carefully. Bombing a square reduces all eight of its neighbors, so his assumption there is actually correct...