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Why should hash functions use a prime number modulus?
...er of buckets. This is convenient and saves having to search around or pre-select a prime number of the right magnitude. So you rely on the hash function not to use even multipliers, which is generally a safe assumption. But you can still get occasional bad hashing behaviours based on hash functions...
What's the point of the X-Requested-With header?
... are already loaded. So you can use an AJAX to get the recipe the user has selected but to save time and bandwidth don't load the header/footer/ads.
Now you can just write a secondary endpoint for the data like www.example.com/recipe_only/apple_pie but that's harder to maintain and share to other ...
Learning Python from Ruby; Differences and Similarities
...lues greater than 15. In Ruby, you'd have to write the following:
values.select {|v| v > 15}.map {|v| v * v}
The Ruby code doesn't feel as compact. It's also not as efficient since it first converts the values array into a shorter intermediate array containing the values greater than 15. Th...
Toggle input disabled attribute using jQuery
... .prop() method accepts two arguments:
Property name (disabled, checked, selected) anything that is either true or false
Property value, can be:
(empty) - returns the current value.
boolean (true/false) - sets the property value.
function - Is executed for each found element, the returned value i...
How can I make Visual Studio's build be very verbose?
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In Visual Studio go to your project and right click on it and select properties. In Linker there is a command line option. There you have all the options and you can add your custom ones. Add /VERBOSE and when linking Visual Studio will show a lot more information.
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How line ending conversions work with git core.autocrlf between different operating systems
...ne of CRLF_BINARY,
CRLF_AUTO_INPUT or CRLF_AUTO_CRLF is selected
- CRLF_BINARY : No processing of line endings.
- CRLF_TEXT : attribute "text" is set, line endings are processed.
- CRLF_TEXT_INPUT: attribute "input" or "eol=lf" is set. This implies text.
- CRLF_TEXT_CRLF :...
When applying a patch is there any way to resolve conflicts?
... You can also right drag patches on a working tree folder and select "Apply patch serial" (for patches like 0001-xxx.patch, ... 0002-xxy.patch) or "Apply single patch file".
– MrTux
Sep 6 '15 at 19:24
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What does [:] mean?
...pulation[:] they default to 0 and length(population) respectively, thereby selecting the entire list. Hence this is a common idiom to make a copy of a list.
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Find unique rows in numpy.array
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As of NumPy 1.13, one can simply choose the axis for selection of unique values in any N-dim array. To get unique rows, one can do:
unique_rows = np.unique(original_array, axis=0)
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Spinlock versus Semaphore
...perly designed that way (probably a queue of pending operations, and here, selecting the next one, leaving the actual on the queue).
– Hibou57
Jul 30 '13 at 1:11
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