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Why is  appearing in my HTML? [duplicate]
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Nested defaultdict of defaultdict
...dd()
>>> x['a']['b']['c']['d']
defaultdict(<function rec_dd at 0x7f0dcef81500>, {})
>>> print json.dumps(x)
{"a": {"b": {"c": {"d": {}}}}}
Of course you could also do this with a lambda, but I find lambdas to be less readable. In any case it would look like this:
rec_dd =...
Why do we need a pure virtual destructor in C++?
...unctions can have implementations).
struct foo {
virtual void bar() = 0;
};
void foo::bar() { /* default implementation */ }
class foof : public foo {
void bar() { foo::bar(); } // have to explicitly call default implementation.
};
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Why does C# allow {} code blocks without a preceding statement?
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90
In the context you give, there is no significance. Writing a constant string to the console is g...
proguard hell - can't find referenced class
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Wesley
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answered Aug 9 '11 at 21:12
Eric LafortuneEric L...
Why is it wrong to use std::auto_ptr with standard containers?
...;X> > vecX;
vecX.push_back(new X);
std::auto_ptr<X> pX = vecX[0]; // vecX[0] is assigned NULL.
To overcome this limitation, you should use the std::unique_ptr, std::shared_ptr or std::weak_ptr smart pointers or the boost equivalents if you don't have C++11. Here is the boost librar...
Clojure: reduce vs. apply
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answered Jun 30 '10 at 21:41
Michał MarczykMichał Marczyk
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Razor view engine, how to enter preprocessor(#if debug)
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edited Oct 10 '15 at 17:59
Hakan Fıstık
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Can a Byte[] Array be written to a file in C#?
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edited Jul 17 '13 at 0:17
answered Dec 19 '08 at 16:58
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Update value of a nested dictionary of varying depth
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edited Nov 15 '19 at 21:20
Alex Telon
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answered Jul 13 '10 at 0:31...