Void value expression

e$B!!$5$5$@$G$9!#e(B

e$B!!0JA0!"%3%s%Q%$%i$NET9g$Ge(B redo e$B$de(B next e$B$OI,$:e(B void
value e$B$K$7$F$/e(B
e$B$l!"$H8@$C$F!"$=$&$7$F$b$i$C$?$h$&$J5-21$,$"$k$s$G$9$,!"$$$m$$$m$$e(B
e$B$8$C$F$3$N@)8B$,<h$l$=$&$G$9!#e(B

e$BNc!'e(B
p(false || next)

e$B!!$7$+$7!"%Q!<%5B&$r$$$8$C$F$_$?$b$N$N!"e(Bvoid value expression
e$BNc30$re(B
e$B@8$8$7$^$$$^$9!#>e5-Nc$re(B void value expression
e$B$K$7$J$$$h$&$K$9$k$3e(B
e$B$H$O2DG=$G$7$g$&$+!#e(B