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Way to read first few lines for pandas dataframe
...: 20
In [4]: time z = pd.read_csv("P00000001-ALL.csv")
CPU times: user 27.63 s, sys: 1.92 s, total: 29.55 s
Wall time: 30.23 s
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Pry: show me the stack
...ay the callstack (with show-stack), and so on:
see here:
Frame number: 0/64
From: /Users/johnmair/ruby/rails_projects/personal_site/app/controllers/posts_controller.rb @ line 7 PostsController#index:
5: def index
6: @posts = Post.all
=> 7: binding.pry
8: end
[1] pry(#<Pos...
Java 8: performance of Streams vs Collections
... 0.230 ns/op
StreamVsVanilla.vanilla avgt 10 10.796 0.063 ns/op
Just as I expected stream implementation is fairly slower. JIT is able to inline all lambda stuff but doesn't produce as perfectly concise code as vanilla version.
Generally, Java 8 streams are not ...
What's the meaning of * (asterisk) in XAML ColumnDefinition?
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When you define a column in a WPF grid you can set the width to one of three possible values:
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How to determine function name from inside a function
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edited May 16 '17 at 18:26
Urda
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How to fix the aspect ratio in ggplot?
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answered Aug 14 '11 at 15:26
AndrieAndrie
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Converting JSON String to Dictionary Not List
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Selecting the first “n” items with jQuery
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