大约有 16,000 项符合查询结果(耗时:0.0224秒) [XML]

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Does :before not work on img elements?

I'm trying to use the :before selector to place an image over another image, but I'm finding that it simply doesn't work to place an image before an img element, only some other element. Specifically, my styles are: ...
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What is the most pythonic way to check if an object is a number?

Given an arbitrary python object, what's the best way to determine whether it is a number? Here is is defined as acts like a number in certain circumstances . ...
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What is the difference between g++ and gcc?

What is the difference between g++ and gcc? Which one of them should be used for general c++ development? 10 Answers ...
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UltiSnips and YouCompleteMe

... is that ultisnips doesn't work because tab is bound by ycm. I tried putting let g:UltiSnipsExpandTrigger = "<s-tab>" so that I can trigger the snippet completion with shift-tab, but it doesn't work for some unknown reason. I could use caps as the trigger, but so far I've found no way to do ...
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Python: finding an element in a list [duplicate]

... the index of an element in a list in Python? Note that the list may not be sorted. 10 Answers ...
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How to prevent going back to the previous activity?

When the BACK button is pressed on the phone, I want to prevent a specific activity from returning to its previous one. 13 ...
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How to automatically generate N “distinct” colors?

I wrote the two methods below to automatically select N distinct colors. It works by defining a piecewise linear function on the RGB cube. The benefit of this is you can also get a progressive scale if that's what you want, but when N gets large the colors can start to look similar. I can also imagi...
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A more useful statusline in vim? [closed]

... go2null 1,32011 gold badge1414 silver badges1616 bronze badges answered Jan 13 '12 at 8:54 Gavin GilmourGavin Gilmour ...
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What are good uses for Python3's “Function Annotations”

... I think this is actually great. Coming from an academic background, I can tell you that annotations have proved themselves invaluable for enabling smart static analyzers for languages like Java. For instance, you could define semantics like state restrictions, threads that are all...
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How to represent multiple conditions in a shell if statement?

... Classic technique (escape metacharacters): if [ \( "$g" -eq 1 -a "$c" = "123" \) -o \( "$g" -eq 2 -a "$c" = "456" \) ] then echo abc else echo efg fi I've enclosed the references to $g in double quotes; that's good practice, in general. Strictly, the parentheses aren't neede...