Objective-C methods that correspond to these JS methods?

Question

What NSMutableArray methods correspond to these Javascript Array methods?

• shift();
• unshift();
• slice();
• splice();

Answer 1

• shift is a combination of -objectAtIndex:0 and removeObjectAtIndex:0.
• unshift is insertObject:obj atIndex:0. It does not return the new length, however.
• slice is -[NSString substringWithRange:]
• splice has no equivalent, though you can approximate it with insertObjects:atIndexes:.