大约有 48,000 项符合查询结果（耗时：0.0500秒） [XML]
Using multiple delimiters in awk
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333
The delimiter can be a regular expression.
awk -F'[/=]' '{print $3 "\t" $5 "\t" $8}' file
P...
What is the purpose of std::make_pair vs the constructor of std::pair?
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answered Feb 14 '12 at 1:39
Tor ValamoTor Valamo
29.5k1010 gold badges6868 silver badges7979 bronze badges
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What is the best way to repeatedly execute a function every x seconds?
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Guillaume Jacquenot
8,26055 gold badges3737 silver badges4444 bronze badges
answered Jan 23 '09 at 21:09
nosklonosklo
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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...
How to overload __init__ method based on argument type?
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... return cls(datadict.items())
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>>> MyData([1, 2, 3]).data
[1, 2, 3]
>>> MyData.fromfilename("/tmp/foobar").data
['foo\n', 'bar\n', 'baz\n']
>>> MyData.fromdict({"spam": "ham"}).data
[('spam', 'ham')]
The reason it's neater is that there is no doubt about...
Functional programming - is immutability expensive? [closed]
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edited Nov 5 '10 at 13:49
answered Nov 5 '10 at 10:45
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Perl flags -pe, -pi, -p, -w, -d, -i, -t?
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edited May 29 '17 at 23:01
dreftymac
26.4k2323 gold badges103103 silver badges163163 bronze badges
a...
Why should I prefer to use member initialization lists?
...) { x = x_; }
int x;
};
class B
{
public:
B()
{
a.x = 3;
}
private:
A a;
};
In this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A better way would be for B's constructor to directly call A's constructor in the ini...
Dynamically load JS inside JS [duplicate]
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