mmaechler

R Markdown:  "Why 10 * 0.1 is rarely 1.0"
========================================================

This is an R Markdown document. Markdown is a simple formatting syntax for authoring web pages (in Rstudio click the **MD** toolbar button for help on Markdown).

When you click the **Knit HTML** button a web page will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

```{r}
summary(cars)
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mmaechler

## original idea & report by Henrik Bengtsson at
## https://stat.ethz.ch/pipermail/r-devel/2016-February/072388.html

## This script downloads the list of currently published R packages
## from CRAN and also looks at all the archived package versions to
## combine these into a list of all R packages ever published on
## CRAN with the date of first release.

## CRAN mirror to use
CRAN_page <- function(...) {

mmaechler

source("ifelse-def.R")


##' warnifnot(): a "only-warning" version of stopifnot():
##'   {Yes, learn how to use do.call(substitute, ...) in a powerful manner !!}
warnifnot <- stopifnot
body(warnifnot) <- do.call(substitute, list(body(stopifnot),
                                            list(stop = quote(warning))))
## (now, this was really cute ....)