I recently discovered a relatively obscure algorithm for calculating the digits of pi: https://en.wikipedia.org/wiki/Gauss–Legendre_algorithm.
Well, at least obscure compared to Chudnovsky's. Wikipedia notes that it is "memory-intensive" but is it really?
Let's compare to the MPFR pi function:
function gauss_legendre(prec)
setprecision(BigFloat, prec, base=10)
GC.enable(false)
| I don't have software installation rights at all with my basic account at work, but I have localadmin rights on a separate account. | |
| But as Atom installs itself automatically to user profile, | |
| I can't just install Atom for my normal account using the localadmin account. | |
| But this works: https://discuss.atom.io/t/how-to-install-atom-on-windows-to-other-places-instead-of-c/27619/12 | |
| In summary: | |
| 1. Install Atom with localadmin account | |
| 2. Run %LocalAppData%\Atom\app-VERSION\atom.exe --squirrel-uninstall VERSION (fill in version with the Semver version of Atom) | |
| 3. Move the %LocalAppData%\Atom folder to anywhere you want - make sure to move this root directory, not the app-VERSION directory | |
| 4. Run C:\Wherever\you\put\it\Atom\app-VERSION\atom.exe --squirrel-install VERSION |
| helpPopup <- function(title, content, | |
| placement=c('right', 'top', 'left', 'bottom'), | |
| trigger=c('click', 'hover', 'focus', 'manual')) { | |
| tagList( | |
| singleton( | |
| tags$head( | |
| tags$script("$(function() { $(\"[data-toggle='popover']\").popover(); })") | |
| ) | |
| ), | |
| tags$a( |
| # load required packages | |
| library(shiny) | |
| library(shinyIncubator) | |
| library(googleVis) | |
| library(ggplot2) | |
| library(stringr) | |
| library(plyr) | |
| library(XML) | |
| library(httr) | |
| library(Hmisc) |
Delimited continuations manipulate the control flow of programs. Similar to control structures like conditionals or loops they allow to deviate from a sequential flow of control.
We use exception handling as another example for control flow manipulation and later show how to implement it using delimited continuations. Finally, we show that nondeterminism can also be expressed using delimited continuations.
