[Salesforce]SetのaddAllメソッド

SetのaddAllメソッド

Set<String> myString = new Set<String>{'a', 'b'};
Set<String> sString = new Set<String>{'c'};

Boolean result1 = myString.addAll(sString);
system.debug('myString:'+myString);
System.assertEquals(true, result1);

結果

myString:{a, b, c}