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Why does += behave unexpectedly on lists?

...t and assign it to a. They are not the same operation! >>> a1 = a2 = [1, 2] >>> b1 = b2 = [1, 2] >>> a1 += [3] # Uses __iadd__, modifies a1 in-place >>> b1 = b1 + [3] # Uses __add__, creates new list, assigns it to b1 >>> a2 [1, 2, 3] ...
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In Java, how do I call a base class's method from the overriding method in a derived class?

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Mercurial Eclipse Plugin

... 206 MercurialEclipse Update site: https://bitbucket.org/mercurialeclipse/update-site/raw/default/...
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Finding out current index in EACH loop (Ruby) [duplicate]

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How to find commits by a specific user in Git? [duplicate]

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How do I find the maximum of 2 numbers?

How to find the maximum of 2 numbers? 10 Answers 10 ...
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Locate Git installation folder on Mac OS X

... 123 The installer from the git homepage installs into /usr/local/git by default. See also this answ...
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How can I get a specific number child using CSS?

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How do I combine two data-frames based on two columns? [duplicate]

...ar I don't know how to merge two dataframes with multiple columns based on 2 columns? 3 Answers ...
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How to make certain text not selectable with CSS [duplicate]

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