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Why can templates only be implemented in the header file?
...compiled.
So when foo.cpp is compiled, the compiler can't see bar.cpp to know that MyClass<int> is needed. It can see the template MyClass<T>, but it can't emit code for that (it's a template, not a class). And when bar.cpp is compiled, the compiler can see that it needs to create a MyC...
How can I use if/else in a dictionary comprehension?
...ues_of_key2': {'bar', 'foo'},
'a_not_in_values_of_key3': {'sad', 'so'}}
Now let's suppose you have two dictionaries like this
d1 = {'bad_key1': {'a', 'b', 'c'}, 'bad_key2': {'foo', 'bar'}, 'bad_key3': {'so', 'sad'}}
d2 = {'good_key1': {'foo', 'bar', 'xyz'}, 'good_key2': {'a', 'b', 'c'}}
and yo...
How to get a complete list of object's methods and attributes?
...rns the keys in the __dict__ attribute, i.e. all the attributes accessible if the __getattr__ method is not reimplemented.
For the second question, it does not really make sense. Actually, methods are callable attributes, nothing more. You could though filter callable attributes, and, using the ins...
How can I get a list of all classes within current module in Python?
...):
for name, obj in inspect.getmembers(sys.modules[__name__]):
if inspect.isclass(obj):
print(obj)
And even better:
clsmembers = inspect.getmembers(sys.modules[__name__], inspect.isclass)
Because inspect.getmembers() takes a predicate.
...
Explain Morris inorder tree traversal without using stacks or recursion
...sal. So X is made the right child of B, then current is set to Y. The tree now looks like this:
Y
/ \
A B
\
X
/ \
(Y) Z
/ \
C D
(Y) above refers to Y and all of its children, which are omitted for recursion issues. The important part is li...
Can I target all tags with a single selector?
I'd like to target all h tags on a page. I know you can do it this way...
10 Answers
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How to do a https request with bad certificate?
...milar but actually completely ignores the certificate check. You need to know that the certificate is valid and signed by a cert that you trust. But in common scenarios, you know that the CN won't match the hostname you connected with. For those, set ServerName on tls.Config. If tls.Config.Serve...
Remove first element from $@ in bash [duplicate]
...
Exactly what I wanted. Now don't need temp variable for dereferencing first argument in "${!1}${@:2}"
– Charlie Gorichanaz
Mar 27 '17 at 22:59
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Is there a __CLASS__ macro in C++?
...re's is to call typeid(your_class).name() - but this produces compiler specific mangled name.
To use it inside class just typeid(*this).name()
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iOS app error - Can't add self as subview
I received this crash report, but I don't know how to debug it.
19 Answers
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