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Why is it slower to iterate over a small string than a small list?
...unobvious, but is likely created from a greater number of checks on string indexing, with regards to the type and well-formedness. It is also quite likely thanks to the need to check what to return.
List indexing is remarkably fast.
>>> python3 -m timeit '[x for x in "abc"]'
1000000 l...
nginx - nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
...lt_server;
For more information, see:
http://forum.linode.com/viewtopic.php?t=8580
http://wiki.nginx.org/HttpCoreModule#listen
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Overwriting my local branch with remote branch [duplicate]
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Great answer, useful to me. One Q: The official git-checkout documentation seems to say that your 3rd command should be: git checkout -b <branch> --track <remote>/<branch> Does yours work equally well, without the --track ?
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What does enumerate() mean?
...rt, it loops over the elements of an iterable (like a list), as well as an index number, combined in a tuple:
for item in enumerate(["a", "b", "c"]):
print item
prints
(0, "a")
(1, "b")
(2, "c")
It's helpful if you want to loop over a sequence (or other iterable thing), and also want to ha...
Remove duplicate rows in MySQL
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A really easy way to do this is to add a UNIQUE index on the 3 columns. When you write the ALTER statement, include the IGNORE keyword. Like so:
ALTER IGNORE TABLE jobs
ADD UNIQUE INDEX idx_name (site_id, title, company);
This will drop all the duplicate rows. As an ...
Implications of foldr vs. foldl (or foldl')
...:Util::reduce, C++'s accumulate, C#'s Aggregate, Smalltalk's inject:into:, PHP's array_reduce, Mathematica's Fold, etc. Common Lisp's reduce defaults to left fold but there's an option for right fold.
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Visual Studio: How to show Overloads in IntelliSense?
... This is what i was looking for. Something simmilar to Ctrl+Q in IntelliJIdea/Android Studio.
– DaMachk
Apr 9 '16 at 10:58
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How to raise a ValueError?
I have this code which finds the largest index of a specific character in a string, however I would like it to raise a ValueError when the specified character does not occur in a string.
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Redirect from an HTML page
...SEO people:
<link rel="canonical" href="http://www.example.com/product.php?item=swedish-fish"/>
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Handling click events on a drawable within an EditText
...presents the left drawable.
* */
public static final int DRAWABLE_INDEX_LEFT = 0;
/**
* This represents the top drawable.
* */
public static final int DRAWABLE_INDEX_TOP = 1;
/**
* This represents the right drawable.
* */
public static final int DRAWABLE_...