cfunction
src/core/io.c on line 671 , column 1
(xprintf to fmt & xs )
Like `printf` but prints to an explicit file or value `to` . Returns
nil.
(def b @"" )
(def v ( 1000 (math/random )))
# => 912.753 can differ for you
(xprintf b "Value reached level %f" v )
# => nil
b
# => @"Value reached level 912.752790\n"