Associative Array of Events

SystemVerilog
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2

An associative array of events is legal, but you are correct that it takes an assignment to an array element to construct it. Both an event trigger → and event control @ are just references.

Unfortunately, there is no such thing as a built-in event constructor, so you have to make your own.

module event_associative_array;
  // String-indexed
   event e_str[string];
   
   function automatic event new_event();
      event e;
      return e;
   endfunction    
   initial begin
      e_str["a"]=new_event();
      forever begin
	 @(e_str["a"]);
	 $display("Triggered");
      end
   end
   
   // Stimulus
   initial begin
      #10;
      ->e_str["a"];
      #10 $finish;
   end   
endmodule

Note that uvm_event_pool accomplishes the same thing.