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How do I use itertools.groupby()?
...to.
The groupby() function takes two arguments: (1) the data to group and (2) the function to group it with.
Here, lambda x: x[0] tells groupby() to use the first item in each tuple as the grouping key.
In the above for statement, groupby returns three (key, group iterator) pairs - once for each uni...
chai test array equality doesn't work as expected
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edited Dec 2 '14 at 13:54
answered Jul 8 '13 at 12:53
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How do I achieve the theoretical maximum of 4 FLOPs per cycle?
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523
+150
I've do...
Is there an opposite of include? for Ruby Arrays?
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edited Nov 26 '18 at 6:07
Finn
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answered Oct 31 '1...
Handling a colon in an element ID in a CSS selector [duplicate]
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answered Sep 23 '08 at 16:52
Mark CidadeMark Cidade
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Get __name__ of calling function's module in Python
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123
Check out the inspect module:
inspect.stack() will return the stack information.
Inside a fun...
SQLAlchemy: print the actual query
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Ilja Everilä
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answered May 23 '14 at 18:05
zzzeekzzzeek
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When to use Preorder, Postorder, and Inorder Binary Search Tree Traversal strategies
...oot (7), ends at the right-most node (10)
Traversal sequence: 7, 1, 0, 3, 2, 5, 4, 6, 9, 8, 10
In-order traversal:
Summary: Begins at the left-most node (0), ends at the rightmost node (10)
Traversal Sequence: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Post-order traversal:
Summary: Begins with the le...
How to update a menu item shown in the ActionBar?
I have an Activity that has 2 fragments. Both are ListFragments and both contribute MenuItems to the Menu. I have one MenuItem that I've set the attribute android:showAsAction to have it show as a button on the ActionBar. Which works fine.
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