Add @Country convenience macro.

src/Countries.jl

@@ -24,7 +24,8 @@ Licensed under MIT License, see LICENSE.md
 """
 module Countries
 
-export Country
+export Country, country, @country
+export name, code, currencies, dial, capital, continent, isdeveloping, region, subregion
 
 """
 This is a singleton type, intended to be used as a label for dispatch purposes
@@ -55,6 +56,13 @@ country(S::Symbol) = _country_data[S][1]
 
 country(::Type{C}) where {C<:Country} = C
 
+macro country(syms)
+    args = syms isa Expr ? syms.args : [syms]
+    for nam in args
+        @eval __module__ const $nam = Countries.$nam
+    end
+end
+
 """
 Returns the official name from the UN Statistics Division.
 """
@@ -109,4 +117,9 @@ end
 allsymbols()  = keys(_country_data)
 allpairs() = pairs(_country_data)
 
+# Contruct cash position types for convenience.
+for (s,(cntry,u,c,n)) in Countries.allpairs()
+    @eval const $s = typeof($(country(cntry))())
+end
+
 end # module Countries