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Are tuples more efficient than lists in Python?
... lists, moving this structure to tuples decreased lookup times by multiple orders of magnitude for multiple lookups. I believe this to be due to the greater cache locality of the tuple once you start using the tuple due to the removal of the second layer of indirection you demonstrate.
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How to validate a url in Python? (Malformed or not)
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Actually, I think this is the best way.
from django.core.validators import URLValidator
from django.core.exceptions import ValidationError
val = URLValidator(verify_exists=False)
try:
val('http://www.google.com')
except Val...
Generic deep diff between two objects
...,1,[3,{c: 1},2]]
to be same, because I think that arrays are not equal if order of their elements is not same. Of course this can be changed if needed. Also this code can be further enhanced to take function as argument that will be used to format diff object in arbitrary way based on passed primit...
Convert objective-c typedef to its string equivalent
... array.
Make sure the indexes are the appropriate enums, and in the right order (otherwise exception).
note: names is a property synthesized as *_names*;
code was not checked for compilation, but I used the same technique in my app.
typedef enum {
JSON,
XML,
Atom,
RSS
} FormatType;
+ (N...
How to Update Multiple Array Elements in mongodb
...ave to be searched, and have to load all of them (or the nested arrays) in order to update... + also a bit troublesome to implement if this has to be done asynchronously...
– Ixx
Oct 1 '13 at 20:24
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Finding all possible combinations of numbers to reach a given sum
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To be as useful as possible, the code should return a List[List[Int]]in order to allow getting the number of solution (length of the list of lists), the "best" solution (the shortest list), or all the possible solutions.
Here is an example. It is very inefficient, but it is easy to understand.
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Natural Sort Order in C#
Anyone have a good resource or provide a sample of a natural order sort in C# for an FileInfo array? I am implementing the IComparer interface in my sorts.
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How to check if hex color is “too black”?
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You have to extract the three RGB components individually, and then use a standard formula to convert the resulting RGB values into their perceived brightness.
Assuming a six character colour:
var c = c.substring(1); // strip #
var rgb = parseInt(c, 16); // convert rrg...
How to resize superview to fit all subviews with autolayout?
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Eric Baker's comment tipped me off to the core idea that in order for a view to have its size be determined by the content placed within it, then the content placed within it must have an explicit relationship with the containing view in order to drive its height (or width) dynamicall...
Converting newline formatting from Mac to Windows
... OSX uses older version of sed. I use Homebrew for OSX, and installed gnu-sed. You use with the "gsed" command instead of "sed". That works.
– John
Nov 11 '13 at 23:01
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