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Element-wise addition of 2 lists?
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Use map with operator.add:
>>> from operator import add
>>> list( map(add, list1, list2) )
[5, 7, 9]
or zip with a list comprehension:
>>> [sum(x) for x in zip(list1, list2)]
[5, 7, 9]
Timing compariso...
Image comparison - fast algorithm
...an the first approach, and is straightforward to implement. However, what it gains in understandability, it lacks in robustness -- matching fails on scaled, rotated, or discolored images.
The third method is both fast and robust, but is potentially the hardest to implement.
Keypoint Matching
Bet...
Why Does OAuth v2 Have Both Access and Refresh Tokens?
... can return both an access_token (which is used to authenticate oneself with a resource) as well as a refresh_token , which is used purely to create a new access_token :
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What is the proper way to test if a parameter is empty in a batch file?
... %1 is surrounded by quotes such as the case when %1 is "c:\some path with spaces" .
16 Answers
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White space showing up on right side of page when background image should extend full length of page
... are having problems in FireFox as well as Safari in iOS on iPads/iPhones with white space showing up on the right side of the page.
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Reading/writing an INI file
Is there any class in the .NET framework that can read/write standard .ini files:
16 Answers
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Java time-based map/cache with expiring keys [closed]
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Yes. Google Collections, or Guava as it is named now has something called MapMaker which can do exactly that.
ConcurrentMap<Key, Graph> graphs = new MapMaker()
.concurrencyLevel(4)
.softKeys()
.weakValues()
.maximumSize(10000)
.expiration(1...
Can one AngularJS controller call another?
Is it possible to have one controller use another?
14 Answers
14
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Changing website favicon dynamically
...ntsByTagName('head')[0].appendChild(link);
})();
Firefox should be cool with it.
edited to properly overwrite existing icons
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Why doesn't Haskell's Prelude.read return a Maybe?
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Edit: As of GHC 7.6, readMaybe is available in the Text.Read module in the base package, along with readEither: http://hackage.haskell.org/packages/archive/base/latest/doc/html/Text-Read.html#v:readMaybe
Great question! The ...