The dontreturn function is used to delete return values from a Maple procedure.  The makevoid function deletes all return values from a Maple procedure.

The command with(codegen,dontreturn) allows the use of the abbreviated form of this command.

The command with(codegen,makevoid) allows the use of the abbreviated form of this command.

$\mathrm{with}\left(\mathrm{codegen}\right)\:$

f := proc(x,A::array(1..2)) A[1] := x^2; return x,A end proc:

$\mathrm{dontreturn}\left(A\,f\right)$

$\mathbf{proc}\left(x\,A::\left(\mathrm{array}\left(1..2\right)\right)\right)A\[1\]≔x\^2\;\mathbf{return}x\mathbf{end\; proc}$

$\mathrm{makevoid}\left(f\right)$

$\mathbf{proc}\left(x\,A::\left(\mathrm{array}\left(1..2\right)\right)\right)A\[1\]≔x\^2\;\mathbf{return}\mathbf{end\; proc}$