09/53: gnu: Add r-hash.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit b9ff25999d6b3d947ceacd7d01d3b64ac2c8120d
Author: Ricardo Wurmus <address@hidden>
Date:   Tue Aug 14 11:10:35 2018 +0200

    gnu: Add r-hash.
    
    * gnu/packages/cran.scm (r-hash): New variable.
---
 gnu/packages/cran.scm | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 4dd2ec4..c36b8b0 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -4766,3 +4766,24 @@ individual SNPs into pre-defined blocks.  A typical 
application of this new
 approach is the identification of genomic regions, genes, or gene sets
 containing one or more SNPs that evolved under directional selection.")
     (license license:gpl2)))
+
+(define-public r-hash
+  (package
+    (name "r-hash")
+    (version "2.2.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "hash" version))
+       (sha256
+        (base32
+         "0mkx59bmni3b283znvbndnkbar85fzavzdfgmwrhskidsqcz34yz"))))
+    (build-system r-build-system)
+    (home-page "https://cran.r-project.org/web/packages/hash/";)
+    (synopsis "Implementation of hash/associated arrays/dictionaries")
+    (description
+     "This package implements a data structure similar to hashes in Perl and
+dictionaries in Python but with a purposefully R flavor.  For objects of
+appreciable size, access using hashes outperforms native named lists and
+vectors.")
+    (license license:gpl2+)))