A structure expression (packed or unpacked) can be built from member expressions using braces and commas, with the members in declaration order. Replicate operators can be used to set the values for the exact number of members. Each member expression shall be evaluated in the context of an assignment to the type of the corresponding member in the structure. It can also be built with the names of the members.

  1 module  struct_expr_operator();
  2 
  3 typedef struct { 
  4   int x; 
  5   int y; 
  6 } myStruct; 
  7 
  8 myStruct s1; 
  9 int k = 1; 
 10 
 11 initial begin 
 12    #1  s1 = '{1, 2+k}; 
 13   // by position 
 14    #1  $display("Value of x = %g y = %g by position", s1.x, s1.y); 
 15    #1  s1 = '{x:2, y:3+k}; 
 16   // by name 
 17    #1  $display("Value of s1 ", s1, " by name"); 
 18    #1  $finish; 
 19 end
 20 
 21 endmodule

 Value of x = 1 y = 3 by position
 Value of s1 2 4 by name

A tagged union expression (packed or unpacked) is expressed using the keyword tagged followed by a tagged union member identifier, followed by an expression representing the corresponding member value. For void members the member value expression is omitted.

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