大约有 47,000 项符合查询结果(耗时:0.0799秒) [XML]

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Create a variable name with “paste” in R?

... | edited Apr 1 '11 at 9:00 answered Apr 1 '11 at 8:54 lec...
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What is the “main file” property when doing bower init?

... 60 According to the Bower.io documentation main Recommended Type: String or Array of ...
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Force R to stop plotting abbreviated axis labels - e.g. 1e+00 in ggplot2

In ggplot2 how can I stop axis labels being abbreviated - e.g. 1e+00, 1e+01 along the x axis once plotted? Ideally, I want to force R to display the actual values which in this case would be 1,10 . ...
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How to calculate time in hours between two dates in iOS

...enDates = [date1 timeIntervalSinceDate:date2]; double secondsInAnHour = 3600; NSInteger hoursBetweenDates = distanceBetweenDates / secondsInAnHour; See, the apple reference library http://developer.apple.com/library/mac/navigation/ or if you are using Xcode just select help/documentation from th...
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How do I use arrays in C++?

... 305 Arrays on the type level An array type is denoted as T[n] where T is the element type and n is...
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Why main does not return 0 here?

... That rule was added in the 1999 version of the C standard. In C90, the status returned is undefined. You can enable it by passing -std=c99 to gcc. As a side note, interestingly 9 is returned because it's the return of printf which just wrote 9 characters. ...
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How to select only the first rows for each unique value of a column

... answered Jan 11 '11 at 20:50 gbngbn 382k7272 gold badges532532 silver badges629629 bronze badges ...
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Does Ruby have a string.startswith(“abc”) built in method?

... 340 It's called String#start_with?, not String#startswith: In Ruby, the names of boolean-ish methods...
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How to calculate the SVG Path for an arc (of a circle)

Given a circle centered at (200,200), radius 25, how do I draw an arc from 270 degree to 135 degree and one that goes from 270 to 45 degree? ...
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How to programmatically show next view in ViewPager?

... yprez 12.6k1010 gold badges4949 silver badges6969 bronze badges answered Nov 12 '11 at 9:26 Vaibhav MishraVaibhav...