toExternal

public override external toExternal()

The string value held by the System.String object.

Converts the string value to its equivalent external value.

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import System;   external mysql = { query: function(q, a) { Console.log(q, a); } };   // Constrain type arguments to only classes that can convert to 'external' interface ICommand<T: IExportable> {     void execute(...T args); }   class CreateUser : ICommand<String> {     final void execute(...String args) {         string username = args[0] ?? "";         mysql.query("INSERT INTO `users`(`username`) VALUES(?);", username.toExternal());     } }   auto createUserCommand = new CreateUser(); createUserCommand.execute("foo"); // "INSERT INTO `users`(`username`) VALUES(?); foo"