Singular

5.2.14 return

Syntax:

return ( expression_list );
return ();

Type:

any

Purpose:

returns the result(s) of a procedure and can only be used inside a procedure. Note that the brackets are required even if no return value is given.

Example:

proc p2 { int i,j; for(i=1;i<=10;i++) { j=j+i; } return(j); } // can also return an expression list, i.e., more than one value proc tworeturn () { return (1,2); } int i,j = tworeturn(); // return type may even depend on the input proc type_return (int i) { if (i > 0) {return (i);} else {return (list(i));} } // then we need def type (or list) to collect value def t1 = type_return(1); def t2 = type_return(-1);