add allcombinations (#47)

Author: bkamins

Project.toml

@@ -1,7 +1,7 @@
 name = "DataAPI"
 uuid = "9a962f9c-6df0-11e9-0e5d-c546b8b5ee8a"
 authors = ["quinnj <[email protected]>"]
-version = "1.9.0"
+version = "1.10.0"
 
 [compat]
 julia = "1"

src/DataAPI.jl

@@ -279,4 +279,12 @@ Return the number of columns of table `t`.
 """
 function ncol end
 
+"""
+    allcombinations(sink, ...)
+
+Create table from all combinations of values in passed arguments
+using a `sink` function to materialize the table.
+"""
+function allcombinations end
+
 end # module