大约有 45,000 项符合查询结果(耗时:0.0524秒) [XML]

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What's the differe<em>nem>ce betwee<em>nem> lapply <em>a<em>nem>dem> do.call?

I'm lear<em>nem>i<em>nem>g R rece<em>nem>tly <em>a<em>nem>dem> co<em>nem>fused by two fu<em>nem>ctio<em>nem>: lapply <em>a<em>nem>dem> do.call . It seems that they're just similar to map fu<em>nem>ctio<em>nem> i<em>nem> Lisp. But why are there two fu<em>nem>ctio<em>nem>s with such a differe<em>nem>t <em>nem>ame? Why does<em>nem>'t R just use a fu<em>nem>ctio<em>nem> called map ? ...
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Whe<em>nem> is it better to use a<em>nem> <em>Nem>SSet over a<em>nem> <em>Nem>SArray?

... I<em>nem> your example, you are addi<em>nem>g primitives to a<em>nem> array <em>a<em>nem>dem> a set. <em>Nem>either is p<em>osem>sible because they ca<em>nem> o<em>nem>ly co<em>nem>tai<em>nem> objects. – FreeAsI<em>nem>Beer Ju<em>nem> 12 '12 at 13:28 ...
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Javascript dy<em>nem>amically i<em>nem>voke object method from stri<em>nem>g

...t be used to i<em>nem>dex type 'FooClass' a<em>nem>yo<em>nem>e else ? – A<em>nem><em>a<em>nem>dem> Rockzz Ju<em>nem> 27 '19 at 4:37 add a comme<em>nem>t  |  ...
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How to get sv<em>nem> remote rep<em>osem>itory URL?

...y local system. I wa<em>nem>t to get the remote rep<em>osem>itory URL. Is there some comm<em>a<em>nem>dem> for doi<em>nem>g this? 7 A<em>nem>swers ...
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How to ig<em>nem>ore certai<em>nem> files i<em>nem> Git

...racked before (by git add). Ru<em>nem> git reset <em>nem>ame_of_file to u<em>nem>stage the file <em>a<em>nem>dem> keep it. I<em>nem> case you wa<em>nem>t to also remove the give<em>nem> file from the rep<em>osem>itory (after pushi<em>nem>g), use git rm --cached <em>nem>ame_of_file. share | ...
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Logical Operators, || or OR?

... <em>nem>o "better" but the more commo<em>nem> o<em>nem>e is ||. They have differe<em>nem>t precede<em>nem>ce <em>a<em>nem>dem> || would work like o<em>nem>e would expect <em>nem>ormally. See also: Logical operators (the followi<em>nem>g example is take<em>nem> from there): // The result of the expressio<em>nem> (false || true) is assig<em>nem>ed to $e // Acts like: ($e = (false || true...
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How do <em>nem>egated patter<em>nem>s work i<em>nem> .gitig<em>nem>ore?

..., it still reads the co<em>nem>te<em>nem>ts of aaa, the<em>nem> each e<em>nem>try matches the wildcard <em>a<em>nem>dem> is ig<em>nem>ored, except aaa/ccc which gets put back i<em>nem>. share | improve this a<em>nem>swer | follow ...
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co<em>nem>vert '1' to '0001' i<em>nem> JavaScript [duplicate]

How ca<em>nem> I co<em>nem>vert co<em>nem>vert '1' to '0001' i<em>nem> JavaScript without usi<em>nem>g a<em>nem>y 3rd party libraries. I have do<em>nem>e this i<em>nem> php usi<em>nem>g spritf: $time = spri<em>nem>tf('%04.0f',$time_arr[$i]); ...
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C++ co<em>nem>vert hex stri<em>nem>g to sig<em>nem>ed i<em>nem>teger

...;&lt; static_cast&lt;i<em>nem>t&gt;(x) &lt;&lt; std::e<em>nem>dl; } I<em>nem> the <em>nem>ew C++11 st<em>a<em>nem>dem>ard, there are a few <em>nem>ew utility fu<em>nem>ctio<em>nem>s which you ca<em>nem> make use of! specifically, there is a family of "stri<em>nem>g to <em>nem>umber" fu<em>nem>ctio<em>nem>s (http://e<em>nem>.cpprefere<em>nem>ce.com/w/cpp/stri<em>nem>g/basic_stri<em>nem>g/stol <em>a<em>nem>dem> http://e<em>nem>.cpprefere<em>nem>ce.co...
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What rules does P<em>a<em>nem>dem>as use to ge<em>nem>erate a view vs a copy?

I'm co<em>nem>fused about the rules P<em>a<em>nem>dem>as uses whe<em>nem> decidi<em>nem>g that a selectio<em>nem> from a dataframe is a copy of the origi<em>nem>al dataframe, or a view o<em>nem> the origi<em>nem>al. ...