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Scala list concatenation, ::: vs ++
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Legacy. List was originally defined to be functional-languages-looking:
1 :: 2 :: Nil // a list
list1 ::: list2 // concatenation of two lists
list match {
case head :: tail => "non-empty"
case Nil => "empty"
}
Of course, Scala evolved other collections, in an ad-hoc manner....
How to convert an Stream into a byte[] in C#? [duplicate]
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12 Answers
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What's the best way to set a single pixel in an HTML5 canvas?
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14 Answers
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Ruby Gem install Json fails on Mavericks and Xcode 5.1 - unknown argument: '-multiply_definedsuppres
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How do I tell matplotlib that I am done with a plot?
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125
You can use figure to create a new plot, for example, or use close after the first plot.
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How do I combine two data frames?
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153
I believe you can use the append method
bigdata = data1.append(data2, ignore_index=True)
to...
What's a quick way to test to see a file exists?
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1 Answer
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How can I strip the whitespace from Pandas DataFrame headers?
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138
You can give functions to the rename method. The str.strip() method should do what you want.
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Add querystring parameters to link_to
... profile_path(@profile, :anchor => "wall")
#=> <a href="/profiles/1#wall">Comment wall</a>
link_to "Ruby on Rails search", :controller => "searches", :query => "ruby on rails"
#=> <a href="/searches?query=ruby+on+rails">Ruby on Rails search</a>
link_to "Nonse...
Difference between .tagName and .nodeName
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129
The tagName property is meant specifically for element nodes (type 1 nodes) to get the type of...