Returns true if the context of the currently executing subroutine oreval is looking for a list value. Returns false if the context is looking for a scalar. Returns the undefined value if the context is looking for no value (void context).
return unless defined wantarray; # don't bother doing moremy @a = complex_calculation();return wantarray ? @a : "@a";wantarray's result is unspecified in the top level of a file, in aBEGIN,UNITCHECK,CHECK,INIT orEND block, or in aDESTROY method.
This function should have been named wantlist() instead.
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