https://www.w3.org/TR/css3-selectors/#attribute-substrings [att*=val] code[class*="language-"] { } <code class="language-c language-js"> Represents an element with the att attribute whose value contains at least one instance of the substring “val”. If “val” is the empty string then the selector does not represent anything.
[att^=val] Represents an element with the att attribute whose value begins with the prefix “val”. If “val” is the empty string then the selector does not represent anything.
[att$=val] Represents an element with the att attribute whose value ends with the suffix “val”. If “val” is the empty string then the selector does not represent anything.

Using NSStringFromSelector to convert the selectos into a NSString, and the print the object:

NSLog(@"%@", NSStringFromSelector(selector) );

Or print it directly with good, old-fashioned C:

NSLog(@"%s", selector,);

[self performSelectorInBackground:@selector(method) withObject:nil]; & wrap method in autorelease pool. maybe also of interest: http://code.google.com/p/plactorkit/ Dictated but not read.