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How to avoid “RuntimeError: dictionary changed size during iteration” error?
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In Python 2.x calling keys makes a copy of the key that you can iterate over while modifying the dict:
for i in d.keys():
Note that this doesn't work in Python 3.x because keys returns an iterator instead of a list.
Another way is to u...
How to make a round button?
...n round circle. It's not the same. Please, tell me, is it possible on Android? Thank you.
15 Answers
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How do C++ class members get initialized if I don't do it explicitly?
... explicit initialization, initialization of members in classes works identically to initialization of local variables in functions.
For objects, their default constructor is called. For example, for std::string, the default constructor sets it to an empty string. If the object's class does not have...
How do I force a UITextView to scroll to the top every time I change the text?
...there's too much hoop jumping to get things to behave the way they automatically should in most cases.
– John Contarino
Jun 9 '15 at 21:52
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Split views.py in several files
...y I did this was to create a views directory, then, in that, create a file called __init__.py
Now, when you're calling in your urls.py, you simply need to add another part
For example, previously, you may have called:-
url(r'^calendar/(?P<year>\d\d\d\d)/$', 'myproject.calendar.views.year')
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Is there a way to add/remove several classes in one single instruction with classList?
... And if you want to apply an Array of several class-names, you have to call: DOMTokenList.prototype.add.apply(elem.classList, ['first', 'second', 'third']);
– Emanuel Kluge
Feb 15 '13 at 16:36
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What are the basic rules and idioms for operator overloading?
... itself succeeded, but the result is not what would be expected.
Function call operator
The function call operator, used to create function objects, also known as functors, must be defined as a member function, so it always has the implicit this argument of member functions. Other than this, it ca...
How can I create an Asynchronous function in Javascript?
...odash:
_.defer( yourFn );
Defers invoking the func until the current call stack has cleared. Any additional arguments are provided to func when it's invoked.
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What can I use instead of the arrow operator, `->`?
...o not be familiar with it as a practicing C++ programmer. Also the syntactically nice path is often not the semantically nice path, but that also has been getting better not worse. But then again I have C++ Stockholm Syndrome.
– Tim Seguine
Aug 6 '18 at 9:13
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Can two Java methods have same name with different return types? [duplicate]
...eter types (so, they have different signature), then it is possible. It is called overloading.
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