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Return

exit from a structured command
Syntax

Return
Return E

where E is an expression.


Description
This function is used to exit from a structured command. The latter form returns the value of the expression E to the user. If executed within a nested loop or inside a user-defined function, it breaks out back to the top level, not just to the next higher loop. (For breaks to the next higher loop, see Break .)

Example
Define Rev(L) -- reverse a list
  If Len(L) < 2 Then Return L EndIf;
  M := Rev(Tail(L)); -- recursive function call
  H := Head(L);
  Return Concat(M,[H]);
EndDefine;
Rev([1,2,3,4];
[4, 3, 2, 1]
-------------------------------
-- Another example: returning from a nested loop
For I := 1 To 5 Do
  For J := 1 To 5 Do
    If J > 2 Then Return Else Print([I,J], " ") EndIf
  EndFor;
EndFor;
[1, 1] [1, 2]
-------------------------------


See Also