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What is the 'pythonic' equivalent to the 'fold' function from functional programming?
...(xs):
return reduce(operator.mul, xs, 1)
Be aware that reduce is actually a foldl, in Haskell terms. There is no special syntax to perform folds, there's no builtin foldr, and actually using reduce with non-associative operators is considered bad style.
Using higher-order functions is quite p...
Garbage collector in Android
I have seen many Android answers that suggest calling the garbage collector in some situations.
11 Answers
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Adding a public key to ~/.ssh/authorized_keys does not log me in automatically
...e some applications if you have some group or other access to files, especially if it's a web directory.
– StingeyB
Jul 18 '12 at 18:41
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How many Activities vs Fragments?
...at most closely matches the tutorial mentioned in the question is the one called "Layout" in the app; or FragmentLayoutSupport in the source code.
In this demo, the logic has been moved out of the Activity and into the Fragment. The TitlesFragment actually contains the logic for changing Fragments....
mailto link with HTML body
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As you can see in RFC 6068, this is not possible at all:
The special <hfname> "body" indicates that the associated <hfvalue>
is the body of the message. The "body" field value is intended to
contain the content for the first text/plain body part of the
m...
Iterating through a range of dates in Python
...erated over. Also the "if" in the generator seems to be unnecessary.
After all, a linear sequence should only require one iterator, not two.
Update after discussion with John Machin:
Maybe the most elegant solution is using a generator function to completely hide/abstract the iteration over the rang...
What is the difference between
...mple, if you have multiline ERB <%...%>, <%#...%> comments out all of it, which it wouldn't do if it was just a normal comment (i.e. it would only comment out the line it's on).
– BalinKingOfMoria Reinstate CMs
Jan 11 '16 at 22:08
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Automatic HTTPS connection/redirect with node.js/express
...ng to get HTTPS set up with a node.js project I'm working on. I've essentially followed the node.js documentation for this example:
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JSON.NET Error Self referencing loop detected for type
I tried to serialize POCO class that was automatically generated from Entity Data Model .edmx and when I used
25 Answers
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LEFT JOIN vs. LEFT OUTER JOIN in SQL Server
...
Absolutely correct. OUTER is allowed for ANSI-92 compatibility.
– Sean Reilly
Jan 2 '09 at 21:34
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