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Why can't I use a list as a dict key in python?
I'm a bit confused about what can/can't be used as a key for a python dict.
11 Answers
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如何获取IE (控件)的所有链接（包括Frameset, iframe） - 其他 - 清泛IT社...
...面的节点列表：
CComPtr<IHTMLElement> body;
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CComPtr<IDispatch> spDispCollection;
body->get_all(&spDispCollection);复制代码所以要获取iframe/frame(frameset) 里面的节点列表的话, 则需要根据body/doc 找到frames, 然后从frames -> IHTMLWindow2 ->...
What's the fastest way to merge/join data.frames in R?
For example (not sure if most representative example though):
5 Answers
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How to override the copy/deepcopy operations for a Python object?
I understand the difference between copy vs. deepcopy in the copy module. I've used copy.copy and copy.deepcopy before successfully, but this is the first time I've actually gone about overloading the __copy__ and __deepcopy__ methods. I've already Googled around and looked through the ...
Is it possible to override JavaScript's toString() function to provide meaningful output for debuggi
When I console.log() an object in my JavaScript program, I just see the output [object Object] , which is not very helpful in figuring out what object (or even what type of object) it is.
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AngularJS: How to clear query parameters in the URL?
My AngularJS application needs to have access to the user's LinkedIn profile. In order to do that I need to redirect the user to a LinkedIn URL which contains a callback redirect_uri parameter which will tell LinkedIn to redirect the user back to my webapp and include a "code" query param in the URL...
Let JSON object accept bytes or let urlopen output strings
With Python 3 I am requesting a json document from a URL.
12 Answers
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Should CSS always preceed Javascript?
In countless places online I have seen the recommendation to include CSS prior to JavaScript. The reasoning is generally, of this form :
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What does “not run” mean in R help pages?
Sometimes on an R help page the phrase "not run" appears in comments. Check out this from the help page for "with()":
5 Ans...
How to chain scope queries with OR instead of AND?
I'm using Rails3, ActiveRecord
19 Answers
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