     chars nth-unsafe ; inline
 
 : make-random-fasta ( seed len chars floats -- seed )
-    [ rot drop select-random ] 2curry B{ } map-as print ; inline
+    [ rot drop select-random ] 2curry "" map-as print ; inline
 
 : write-description ( desc id -- )
     ">" write write bl print ; inline


:: make-repeat-fasta ( k len alu -- k' )
    [let | kn [ alu length ] |
        len [ k + kn mod alu nth-unsafe ] B{ } map-as print
        k len +
    ] ; inline


    }

: make-cumulative ( freq -- chars floats )
    [ keys >byte-array ]
    [ values >double-array ] bi unclip [ + ] accumulate swap suffix ;

:: select-random ( seed chars floats -- seed elt )
    floats seed random -rot
