Switch to Objective-C mode in lldb

Question

When I debug a Swift application in Xcode, the debugger expects an expression in Swift format. How can I switch it to expect an Objective-C expression?

For example, I want to be able to type expr id $foo = [[SomeClass alloc] initWithBar:@"quux"];Swift instead of any equivalent.

Answer 1

Swift 3.0 or before use: You can use the following command to name all available languages ​​in LLDB.

Swift 4.0

Create an alias like "eco" to print target-c objects

(lldb)command alias eco expression -l objective-c -o --
(lldb)eco [[UIApplication sharedApplication] userHomeDirectory] 
/Users/...

Answer 2

Xcode LLDB WWDC 2018 , :

expression -l objc -O -- [doYourStuff here]

, Swift Objective C . , , , :

error: use of undeclared identifier 'self'

, , '. :

expression -l objc -O -- ['self' class]