04/05: gnu: Add r-foreach.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit b2cdb0271badbc1ac768fe2f8002a11380c70d77
Author: Ricardo Wurmus <address@hidden>
Date:   Thu Mar 17 17:14:45 2016 +0100

    gnu: Add r-foreach.
    
    * gnu/packages/statistics.scm (r-foreach): New variable.
---
 gnu/packages/statistics.scm |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 97481b8..8116f50 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -1717,6 +1717,34 @@ data.")
 code for possible problems.")
     (license (list license:gpl2+ license:gpl3+))))
 
+(define-public r-foreach
+  (package
+    (name "r-foreach")
+    (version "1.4.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "foreach" version))
+       (sha256
+        (base32
+         "10aqsd3rxz03s1qdb6gsb1cj89mj4vmh491zfpin4skj1xvkzw0y"))))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-codetools" ,r-codetools)
+       ("r-iterators" ,r-iterators)))
+    (home-page "http://cran.r-project.org/web/packages/foreach";)
+    (synopsis "Foreach looping construct for R")
+    (description
+     "This package provides support for the @code{foreach} looping construct.
address@hidden is an idiom that allows for iterating over elements in a
+collection, without the use of an explicit loop counter.  This package in
+particular is intended to be used for its return value, rather than for its
+side effects.  In that sense, it is similar to the standard @code{lapply}
+function, but doesn't require the evaluation of a function.  Using
address@hidden without side effects also facilitates executing the loop in
+parallel.")
+    (license license:asl2.0)))
+
 (define-public r-dt
   (package
     (name "r-dt")