How can I get debug identifiers like namespace, line, file, column, function and dso handle in swift?

Question

In many languages I'm able to do something like this

printf("line number %d in file %s\n", __LINE__, __FILE__);

How can I get these debug identifiers in swift? I'd like to see a full list of available debug identifiers.

Well, that post is just asking for a single debug identifier @Wain — hfossli, Feb 04 '16 at 09:30
It is not a duplicate. Swift isn't just for objective-c. Having `NSLog` in the the title as entry for others searching for answers will be confusing. Swift is for linux, windows, mac, ios and any platform you'd like. This is a much more general question and the question you are referring to is only asking for a single debug identifier. — hfossli, Feb 04 '16 at 09:51

hfossli · Answer 1 · 2016-02-04T09:34:20.850

With Swift 2.1 and below you are able to get these debug identifiers by

__FILE__
__LINE__
__COLUMN__
__FUNCTION__
__DSO_HANDLE__

Can be used like so

print("Function: \(__FUNCTION__), line: \(__LINE__)")

As of Swift 2.2 they may already be deprecated (time will tell) and replaced with

#namespace
#file
#line
#column
#function
#dsohandle

Can be used like so

print("Function: \(#function), line: \(#line)")

1 Answers1