AlphaPipes: AlphaPipes: named magrittr-style pipes
In alekrutkowski/AlphaPipes: Named magrittr-style pipes

The package provides “named pipes” which may complement: the magrittr package pipes. The named pipes make it possible to use all lower-case and upper-case letters as the right-hand-side placeholders for the values piped from the left-hand-side, while the standard magrittr's operator %>% uses only a dot.

When the package is loaded (via library(AlphaPipes)) the pipe operators (%a% ... %z% and %A% ... %Z%) are dynamically created in AlphaPipes' namespace. So you cannot import them via %myoperator% <- AlphaPipes::`%a%`. Anyway, such an import does not seem to make sense – namespaced operators e.g. AlphaPipes::`%a%` would be inconvenient – too verbose, while re-named named pipes e.g. %aa% as an alias for %a% would be confusing (since symbol a would need to be used on the right-hand side anyway).

AlphaPipes needs package clojR which can be installed from GitHub:

devtools::install_github('alekrutkowski/clojR')

# Trivial:
1:3 %A% mean(A)  # The same as mean(1:3) or 1:3 %>% mean
# Returns 2

# Showing the actual usefulness - referring to earlier values
# from the piped flow:
data.frame(xx=1:5) %a%
    (dplyr::mutate(a, nnn = xx+10) %b%
         dplyr::rename(b, xx2 = xx) %b%
         cbind(b, a))
# Returns a data.frame:
#    xx2 nnn xx
#  1   1  11  1
#  2   2  12  2
#  3   3  13  3
#  4   4  14  4