In language like python and ruby to ask the language what index-related methods its string class supports (which methods’ names contain the word “index”) you can do

“”.methods.sort.grep /index/i

And in java

List results = new ArrayList();  
Method[] methods = String.class.getMethods();  
for (int i = 0; i < methods.length; i++) {  
    Method m = methods[i];  
    if (m.getName().toLowerCase().indexOf(“index”) != -1) {  
        results.add(m.getName());  
    }  
}  
String[] names = (String[]) results.toArray();  
Arrays.sort(names);  
return names;  

How would you do the same thing in Scala?