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Can dplyr package be used for conditional mutating?

... 220 Use ifelse df %>% mutate(g = ifelse(a == 2 | a == 5 | a == 7 | (a == 1 & b == 4), 2, ...
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How to change navbar collapse threshold using Twitter bootstrap-responsive?

I'm using Twitter Bootstrap 2.0.1 in a Rails 3.1.2 project, implemented with bootstrap-sass. I'm loading both the bootstrap.css and the bootstrap-responsive.css files, as well as the bootstrap-collapse.js Javascript. ...
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How to determine the longest increasing subsequence using dynamic programming?

... 407 OK, I will describe first the simplest solution which is O(N^2), where N is the size of the col...
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If vs. Switch Speed

... answered Jan 14 '09 at 23:16 Konrad RudolphKonrad Rudolph 461k118118 gold badges863863 silver badges11101110 bronze badges ...
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What is the difference between quiet NaN and signaling NaN?

... 70 When an operation results in a quiet NaN, there is no indication that anything is unusual until ...
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Converting a column within pandas dataframe from int to string

... In [16]: df = DataFrame(np.arange(10).reshape(5,2),columns=list('AB')) In [17]: df Out[17]: A B 0 0 1 1 2 3 2 4 5 3 6 7 4 8 9 In [18]: df.dtypes Out[18]: A int64 B int64 dtype: object Convert a series In [19]: df['A'].apply(str) Ou...
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Modify SVG fill color when being served as Background-Image

... | edited Dec 21 '18 at 0:15 David Neto 72311 gold badge1111 silver badges2020 bronze badges answered ...
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DateTime to javascript date

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Twitter's typeahead.js suggestions are not styled (have no border, transparent background, etc.)

I'm using twitter's typeahead.js 0.9.3 and it seems my suggestions are not styled at all. 9 Answers ...
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Where can I find a NuGet package for upgrading to System.Web.Http v5.0.0.0?

Just upgraded an ASP.NET MVC4 project to use Unity.WebApi version 5.0.0.0 and it requires System.Web.Http v 5.0.0.0 as per the following error: ...