NSString: isEqual vs. isEqualToString

by

isEqual: compares a string to an object, and will return NO if the object is not a string. isEqualToString: is faster if you know both objects are strings, as the documentation states:

Special Considerations

When you know both objects are strings, this method is a faster way to check equality than isEqual:.

isEqualTo<Class> is used to provide specific checks for equality. For instance; isEqualToArray: checks that the arrays contain an equal number of objects, and that the objects at a given index return YES for the isEqual: test.

More Related Contents:

  1. Understanding NSString comparison
  2. Having trouble adding objects to NSMutableArray in Objective C
  3. Number of occurrences of a substring in an NSString?
  4. Comparing Strings in Cocoa
  5. Managing multiple asynchronous NSURLConnection connections
  6. Search through NSString using Regular Expression
  7. Difference between NSString literals
  8. If “a == b” is false when comparing two NSString objects
  9. Reverse NSString text
  10. NSString is integer?
  11. NSTimeZone: what is the difference between localTimeZone and systemTimeZone?
  12. Check whether or not the current thread is the main thread
  13. NSString – Convert to pure alphabet only (i.e. remove accents+punctuation)
  14. NSString instance reports its class as NSCFString
  15. How to get the width of an NSString?
  16. +[NSString stringWithString:] — what’s the point?
  17. How to add a breakpoint to objc_exception_throw?
  18. Difference between objectForKey and valueForKey?
  19. Picking a Random Object in an NSArray
  20. How to sort NSMutableArray using sortedArrayUsingDescriptors?
  21. Collapse sequences of white space into a single character and trim string
  22. How to Deal with Temporary NSManagedObject instances?
  23. Objective-C: Find numbers in string
  24. Difference between self.var and simply var
  25. How to convert an NSTimeInterval (seconds) into minutes
  26. Check that an email address is valid on iOS [duplicate]
  27. Class Foo is implemented in both MyApp and MyAppTestCase. One of the two will be used. Which one is undefined
  28. Observe a File or Folder in Objective-C
  29. How to wake from sleep programmatically if lid closed?
  30. Getting array elements with valueForKeyPath

Leave a Comment