大约有 43,500 项符合查询结果（耗时：0.0370秒） [XML]
Find object in list that has attribute equal to some value (that meets any condition)
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edited Sep 20 at 6:28
Tropicalrambler
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answered Aug ...
Replacement for “rename” in dplyr
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Richard
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answered Oct 1 '14 at 16:35
aaronwolenaaronw...
Filter dataframe rows if value in column is in a set list of values [duplicate]
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edited Feb 25 at 0:45
Harvey
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answe...
How can I find the number of days between two Date objects in Ruby?
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edited Dec 16 '13 at 6:29
dylanfm
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answered De...
How to determine the longest increasing subsequence using dynamic programming?
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OK, I will describe first the simplest solution which is O(N^2), where N is the size of the collection. There also exists a O(N log N) solution, which I will describe also. Look here for it at the section Efficient algorithms.
I will assume the indices of the array are from 0 to N - 1...
Memoization in Haskell?
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259
We can do this very efficiently by making a structure that we can index in sub-linear time.
B...
How to validate date with format “mm/dd/yyyy” in JavaScript?
...sValidDate(dateString)
{
// First check for the pattern
if(!/^\d{1,2}\/\d{1,2}\/\d{4}$/.test(dateString))
return false;
// Parse the date parts to integers
var parts = dateString.split("/");
var day = parseInt(parts[1], 10);
var month = parseInt(parts[0], 10);
va...
Nokogiri installation fails -libxml2 is missing
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First, install the dependencies:
sudo apt-get install libxslt-dev libxml2-dev
If you still receive the error, you may be missing a compiler toolchain:
sudo apt-get install build-essential
You'll get the "libxml2 is missing" error if you're missing a build toolchain (at least I ran into this ...
Converting JavaScript object with numeric keys into array
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328
It's actually very straight forward with jQuery's $.map
var arr = $.map(obj, function(el) { re...
How to log request and response body with Retrofit-Android?
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I used setLogLevel(LogLevel.FULL).setLog(new AndroidLog("YOUR_LOG_TAG")), it helped me.
UPDATE. ...