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hughparsonage
2018 May 03
1
Proposed speedup of ifelse
...1:28, 4, 7)
ifelse(M, 1, 2)
The performance improvement does not rely on this, however; so if
current behaviour in these cases is intended, the patch can be
trivially amended to reflect this.
I've written up a short note detailing the performance improvements
and some unit tests at
https://hughparsonage.github.io/content/post/A-new-ifelse.html
Best
Hugh Parsonage
2017 Jun 19
0
\U or \L perl regex in gsub removes text outside capturing group in UTF-8 contexts
...gsub appears to have changed
from R 3.4.0, but the documentation for the replacement argument has not.
## Reprex (A call to readLines is essential. A url is provided for
convenience but the behaviour should reproduce for local files)
bib <- readLines("
https://raw.githubusercontent.com/HughParsonage/TeXCheckR/master/tests/testthat/lint_bib_in.bib",
encoding = "UTF-8", n = 10)
bib8910 <- bib[8:10]
gsub("(\\w+)", "\\U\\1", bib8910, perl = TRUE)
#> [1] "@TECHREPORT" " AUTHOR" " TITLE"
Expected result (in R 3.4.0):
#>...