Feature Requests item #1629855, was opened at 2007-01-07 12:56
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Category: None
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: David R. MacIver (drmaciver)
Assigned to: Nobody/Anonymous (nobody)
Summary: Better compiler warnings for ambiguous methods
Initial Comment:
Currently it's very easy to create ambiguous methods without being warned about it. Some examples:
class Foo { }
class Bar extends Foo { }
// Compiles without a twitch.
void doStuff(Foo foo1, Foo foo2) { }
void doStuff(Foo foo1, Bar foo2) { }
void doStuff(Bar foo1, Foo foo2) { }
// Doesn't compile
doStuff(new Bar(), new Bar());
Another example which the compiler doesn't catch (and is probably never intentional):
let String foo = "foo";
public void doStuff(String string) { }
doStuff(foo) { System.out.println("Hi!"); }
doStuff("foo") { System.out.println("Bye!"); }
Ambiguous methods aren't neccessarily a problem and presumably can be deliberate in some cases, so this probably shouldn't be considered an error. It would however be very useful if the compiler could warn when you've done this.
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