Closed. This question is opinion-based. It is not currently accepting answers. 开发者_JAVA技巧 Want to improve this question? Update the question so it can be answered with facts and citati
Why is there the method iterator() defined on the interface java.util.Collection when it already extends java.util.Iterable which has this very method defined.
Is there a reason that the STL does not provide fu开发者_Python百科nctions to return an iterator into a container via an index?
Is there any way to check if an iterator (whether it is from a vector, a list, a deque...) is (still) 开发者_如何学JAVAdereferenceable, i.e. has not been invalidated?
Warning this is a long question! I am implementing a Solitaire card game in C++ on Win32, and after asking this question, it\'s becoming clear that I may need a bit of guidance regarding actual class
I have a class MyMap which wraps TreeMap. (Say it\'s a collection of dogs and that the keys are strings).
I\'m about to refactor some duplicated code. Two functions both search in a multimap using equal_range(). In a for loop after the call to equal_range() there is a for loop that sets
I know that it\'s typically a big no-no to remove from a list using java\'s \"foreach\" and that one should use iterator.remove().But is it safe to remove() if I\'m looping over a HashMap\'s keySet()?
I have a QTreeWidget with items in it. The first column contains a unique number. This is set via item->setData(0, 0, unique_number);. The second column contains a checkbox, set via item->setCheckStat
Let\'s say you want to construct an Iterator that spits out File objects. What type of data do you usually provide to the constructor of such an Iterator?
加载中,请稍侯......