大约有 45,000 项符合查询结果(耗时:0.0767秒) [XML]

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What is the difference between const_iterator and non-const iterator in the C++ STL?

What is the difference between a const_iterator and an iterator and where would you use one over the other? 7 Answers ...
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How to retrieve an element from a set without removing it?

...pop(), since iteration seems to sort the elements. I would prefer them in random order... – Daren Thomas Sep 12 '08 at 20:17 10 ...
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Cutting the videos based on start and end time using ffmpeg

I tried to cut the video using the start and end time of the video by using the following command 9 Answers ...
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SQL is null and = null [duplicate]

... In SQL, a comparison between a null value and any other value (including another null) using a comparison operator (eg =, !=, <, etc) will result in a null, which is considered as false for the purposes of a where clause (strictly speaking, it's "not true", rather...
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Merging two arrays in .NET

Is there a built in function in .NET 2.0 that will take two arrays and merge them into one array? 21 Answers ...
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How to check for the type of a template parameter?

Suppose I have a template function and two classes 4 Answers 4 ...
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How can I get all constants of a type by reflection?

...; FieldInfo[] fieldInfos = type.GetFields( // Gets all public and static fields BindingFlags.Public | BindingFlags.Static | // This tells it to get the fields from all base types as well BindingFlags.FlattenHierarchy); // Go through the list and only pick...
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Convert Iterator to ArrayList

...tor to ArrayList<Element> (or List<Element> ) in the best and fastest way possible, so that we can use ArrayList 's operations on it such as get(index) , add(element) , etc. ...
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Most efficient way to cast List to List

... be declared as taking a List<? extends BaseClass>. But if it isn't and you can't change it, you can wrap the list with Collections.unmodifiableList(...), which allows returning a List of a supertype of the argument's parameter. (It avoids the typesafety problem by throwing UnsupportedOperati...
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WPF - How to force a Command to re-evaluate 'CanExecute' via its CommandBindings

I have a Menu where each MenuItem in the hierarchy has its Command property set to a RoutedCommand I've defined. The associated CommandBinding provides a callback for the evaluation of CanExecute which controls the enabled state of each MenuItem . ...