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Why are quaternions used for rotations?
...se representations of rotations are used in practice. Euler angles use the least memory; matrices use more memory but don't suffer from Gimbal lock and have nice analytical properties; and quaternions strike a nice balance of both, being lightweight, but free from Gimbal lock.
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Too many 'if' statements?
...able in the long term I'd use an approach involving enumerated types or at least named constants.
– JAB
Mar 19 '14 at 15:11
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Does JavaScript have “Short-circuit” evaluation?
... of the && operator.
How it really works:
By now, we should at least have a picture how the short-circuit operators work. The universal rule goes:
(some falsy expression) && expr will evaluate to falsy expression
(some truthy expression) || expr will evaluate to truthy expressi...
What are the minimum margins most printers can handle?
...hem do it on their computer. Print dialogs usually (Adobe and Preview, at least) give you an option to scale and center the output on the printable area of the page:
Adobe
Preview
Of course, this assumes that you have computer literate users, which may or may not be the case.
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Is it correct to use JavaScript Array.sort() method for shuffling?
...ble. If c ~ n log n then 2^c ~ n^(a·n) where a = const, which makes it at least possible that 2^c is of same magnitude as (or even less than) n! and thus leading to an uneven distribution, even if the sorting algorithm where to map onto the permutaions evenly. If this has any practical impact is be...
How to make a SPA SEO crawlable?
...you simple remove the pushState:true for that). The more complex part (at least for me...) was the server part:
Server Side
I'm using MVC 4.5 on the server side with WebAPI controllers. The server actually needs to handle 3 types of URLs: the ones generated by google - both pretty and ugly and a...
How do I prompt for Yes/No/Cancel input in a Linux shell script?
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At least five answers for one generic question.
Depending on
posix compliant: could work on poor systems with generic shell environments
bash specific: using so called bashisms
and if you want
simple ``in line'' question ...
What's the difference between ContentControl and ContentPresenter?
...use ControlTemplate and ControlPresenters for displaying content blocks at least thats what the guys at Microsoft did when they developed the WP7/8 SDK. The ContentControl can also be used for displaying content but then it serves both as container and presenter. So in the sample code above its purp...
What is the difference between bottom-up and top-down?
...ide which subproblems to reveal.)
Memoization, Tabulation
There are at least two main techniques of dynamic programming which are not mutually exclusive:
Memoization - This is a laissez-faire approach: You assume that you have already computed all subproblems and that you have no idea what the...
Why is there a difference in checking null against a value in VB.NET and C#?
...t the number of different definitions of equality that may be useful in at least some circumstances exceeds the number of commonly-available means to express them. This problem is in some cases made worse by an unfortunate belief that it is confusing to have different means of testing equality yield...