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Pandas every nth row
...d use iloc, which takes a row/column slice, both based on integer position and following normal python syntax.
df.iloc[::5, :]
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How is the undo tree used in Vim?
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See also :h undo-redo, which lists all the commands and their usage.
There are two ways to traverse the undo tree. One is to go "back in time". g+ and g- will traverse all of the nodes in the tree in chronological or reverse-chronological order (which can be a bit co...
Ensure that HttpConfiguration.EnsureInitialized()
I've installed Visual Studio 2013 and when I run my app I get the error below.
14 Answers
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Where to define custom error types in Ruby and/or Rails?
...ou define exceptions in this way:
gem_dir/lib/gem_name/exceptions.rb
and defined as:
module GemName
class AuthenticationError < StandardError; end
class InvalidUsername < AuthenticationError; end
end
an example of this would be something like this in httparty
For Ruby on Rails
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How to inherit constructors?
Imagine a base class with many constructors and a virtual method
14 Answers
14
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Cost of len() function
...ength of the element - very fast) on every type you've mentioned, plus set and others such as array.array.
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Reintegrate can only be used if revisions X through Y were previously merged from to reintegra
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If you are working on a branch and have been keeping it up to date with others work you might be bemused when you create a working copy of the trunk and attempt to reintegrate your branch if you get a message something like this:
$ svn merge --reintegrate...
How to load a xib file in a UIView
I have been searching everywhere and nothing so far has worked for me.
7 Answers
7
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Package objects
...write
import swing._
import Swing._
to have all the goodness like onEDT and implicit conversions from Tuple2 to Dimension.
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Python assigning multiple variables to same value? list behavior
...he behavior, I expect to reassign the values list separately, I mean b[0] and c[0] equal 0 as before.
9 Answers
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