大约有 44,687 项符合查询结果(耗时:0.0530秒) [XML]

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Getting the last element of a list

...ist[-1] is the shortest and most Pythonic. In fact, you can do much more with this syntax. The some_list[-n] syntax gets the nth-to-last element. So some_list[-1] gets the last element, some_list[-2] gets the second to last, etc, all the way down to some_list[-len(some_list)], which gives you the f...
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Is there a way to perform “if” in python's lambda

... question was "how do I use if in a lambda?" not "what's the best way to write a lambda that returns True if a number is even?" – Robert Rossney Oct 18 '09 at 19:10 101 ...
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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?

...d explanations on what argument dependent lookup is? Many people also call it Koenig Lookup as well. 4 Answers ...
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How to get progress from XMLHttpRequest

Is it possible to get the progress of an XMLHttpRequest (bytes uploaded, bytes downloaded)? 8 Answers ...
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Is it possible in Java to access private fields via reflection [duplicate]

Is it possible in Java to access private field str via reflection? For example to get value of this field. 3 Answers ...
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What is the proper way to use the node.js postgresql module?

I am writing a node.js app on Heroku and using the pg module . I can't figure out the "right" way to get a client object for each request that I need to query the database. ...
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Is AngularJS just for single-page applications (SPAs)?

...t a small piece of that. You have a large list of features that will benefit you outside of client-side routing: two-way binding templating currency formatting pluralization reusable controls RESTful api handling AJAX handling modularization dependency injection It's crazy to think that all of ...
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it

...to be unwound etc. On the other hand, accessing a value in a dictionary by its key is cheap, because it's a fast, O(1) operation. BTW: The correct way to do this is to use TryGetValue obj item; if(!dict.TryGetValue(name, out item)) return null; return item; This accesses the dictionary only ...
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GPU Emulator for CUDA programming without the hardware [closed]

... emulator for a Geforce card that would allow me to program and test CUDA without having the actual hardware? 7 Answers ...
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Representing Monetary Values in Java [closed]

...s creating their own Cash or Money classes which encapsulate a cash value with the currency, but under the skin it's still a BigDecimal, probably with BigDecimal.ROUND_HALF_EVEN rounding. Edit: As Don mentions in his answer, there are open sourced projects like timeandmoney, and whilst I applaud th...