大约有 44,000 项符合查询结果(耗时:0.0716秒) [XML]

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Will using goto leak variables?

... it true that goto jumps across bits of code without calling destructors and things? 1 Answer ...
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Why can't decimal numbers be represented exactly in binary?

...e the == operator to compare it to another floating-point number. I understand the principles behind floating-point representation. ...
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Finding all possible permutations of a given string in python

... not specified or is None, then r defaults to the length of the iterable and all possible full-length permutations are generated. Permutations are emitted in lexicographic sort order. So, if the input iterable is sorted, the permutation tuples will be produced in sorted order. You'll ha...
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In Clojure, when should I use a vector over a list, and the other way around?

... Once again, it seems I've answered my own question by getting impatient and asking it in #clojure on Freenode. Good thing answering your own questions is encouraged on Stackoverflow.com :D I had a quick discussion with Rich Hickey, and here is the gist of it. [12:21] <Raynes> Vectors a...
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Get last record in a queryset

...no real effect (the ordering was undefined prior to calling reverse(), and will remain undefined afterward). share | improve this answer | follow | ...
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How to implement an STL-style iterator and avoid common pitfalls?

I made a collection for which I want to provide an STL-style, random-access iterator. I was searching around for an example implementation of an iterator but I didn't find any. I know about the need for const overloads of [] and * operators. What are the requirements for an iterator to be "STL-s...
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How to access random item in list?

I have an ArrayList, and I need to be able to click a button and then randomly pick out a string from that list and display it in a messagebox. ...
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How to swap files between windows in VIM?

... There are a few useful commands built in which give you a certain amount of control, but it's not comprehensive. The main ones are: Ctrl-W, r (i.e. hold CTRL, press W, release CTRL, press r) - which rotates the windows (The first window becomes the ...
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Why does an overridden function in the derived class hide other overloads of the base class?

...ding happens, people who respond either say that this called "name hiding" and explain how it works (which you probably already know), or explain how to override it (which you never asked about), but nobody seems to care to address the actual "why" question. The decision, the rationale behind the n...
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Why not inherit from List?

... is to say, "to the human mind") is just a list of things with a few bells and whistles? Ask any ten non-computer-programmer people who are familiar with the existence of football to fill in the blank: A football team is a particular kind of _____ Did anyone say "list of football players wit...