drmikeando

3 ms·

1. 1.▲
   by drmikeando 7mo ago

   To me the neat bit isn't that it got the exponential decay right - that's pretty standard, its that it realised there were two different timescales for the decay and got ball-park numbers for them pretty well. This is the kind of
2. 2.▲
   by drmikeando 7mo ago

   While this is a great article, I feels it buries the lede. For me, the key insight was from the last paragraph of the article: C++23 introduces "deducing this", which is a way to avoid the performance cost of dynamic dispatch wit
3. 3.▲
   by drmikeando 1y ago

   My mind was exploded by this somewhat similar technique https://en.wikipedia.org/wiki/Tanh-sinh_quadrature - it uses a similar transformation of domain, but uses some properties of optimal quadrature for infinite seque
4. 4.▲
   by drmikeando 1y ago

   You can view this result as the convolution of the signal with an exponentially decaying sine and cosine. That is, `y(t') = integral e^kt x(t' - t) dt`, with k complex and negative real part. If you discretize that using simple
5. 5.▲
   by drmikeando 3y ago

   IMO the reason the compiler doesn't add special cases for the simplest version is that it doesn't know which of its _many_ special cases to use. If you actually use the unoptimised version of the code like void withSwitch(ve