jbe@9: require "seqlua_c_example"  -- defines functions "printcsv" and "printthree"
jbe@0: 
jbe@0: function alphabet()
jbe@0:   local letter = nil
jbe@0:   return function()
jbe@0:     if letter == nil then
jbe@0:       letter = "a"
jbe@0:     elseif letter == "z" then
jbe@0:       return nil
jbe@0:     else
jbe@0:       letter = string.char(string.byte(letter) + 1)
jbe@0:     end
jbe@0:     return letter
jbe@0:   end
jbe@0: end
jbe@0: 
jbe@0: printcsv{"a", "b", "c"}
jbe@0: -- prints:
jbe@0: -- a,b,c
jbe@0: 
jbe@0: printcsv(alphabet())
jbe@0: -- prints:
jbe@0: -- a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z
jbe@0: 
jbe@8: printthree(alphabet())
jbe@8: -- prints:
jbe@8: --  a
jbe@8: --  b
jbe@8: --  c
jbe@8: 
jbe@8: printthree(setmetatable({v="x"}, {__call=function(t) return t.v end}))
jbe@8: -- prints:
jbe@8: --  x
jbe@8: --  x
jbe@8: --  x
jbe@8: