Switch to Objective-C mode in lldb
<p>When I am debugging a Swift app in Xcode, the debugger expects expressions in Swift format. How can I switch it to expect Objective-C expressions instead?</p>

<p>E.g., I want to be able to type <code>expr id $foo = [[SomeClass alloc] initWithBar:@"quux"];</code> instead of whatever the Swift equivalent is.</p>