The document discusses the transition from Objective-C to Swift as Apple's new programming language for iOS and OS X, highlighting Swift's advantages in readability, memory management, and safety compared to Objective-C. It emphasizes the importance of this change for developers, citing Swift's modern features and elimination of legacy conventions. The document also notes the ongoing interoperability between Swift and Objective-C in application development.

1. OBJECTIVE C
TO
SWIFT

2. Objective-C was created at the Stepstone
company in the early 1980s by Brad Cox and
Tom Love
“
”

3. 35 years old
Never Ending Pride…..

4. Best Programming Language
That Turns to Trend…..

5. “Change is the law of life”
– John F. Kennedy

6. That Left Everything Behind……….
Huge surprise at WWDC 2014

7. An announced made by Apple
for change in programming
language for iOS and OS X
“
”

8. Change Ahead………
New programming language

9. Quality is much better than
quantity. One home run is
much better than two doubles
“
”

10. For iOS and OSX.........
Swift- For Beinginners

11. Shift to SWIFT – The need for something new
Why Apple chose to adopt swift as new change?

12. Shift to SWIFT for better results………….
Advantages of swift over Objective C

13. EASIER TO READ
Objective C
Introduced new keywords
using the @ symbol
Follow legacy conventions
Ugly duckling used
Swift
It isn’t built on C, it can unify
all the keywords and remove
the numerous @ symbols
Drops legacy conventions
Readability makes it easier

14. Objective C Swift
EASIER TO MAINTAIN
Maintain two code files
requirement
Manually synchronize method
between files, but this isn’t
guaranteed unless the team has
rules and code reviews in place.
Drops the two-file
requirement
Programmers do less
bookkeeping and can spend
more time creating app
logic

15. Objective C Swift
SAFER
Pointers interesting aspect –
particularly nil (null) pointers
Swift code generate a
compiler error
-Write bad code creating a
short feedback loop
-Allowing the person to fix
the problem

16. Objective C Swift
MEMORY MANAGEMENT
ARC is supported within the
Cocoa APIs and object-
oriented code, It is not
available, for procedural
C code and APIs like Core
Graphics
Low Performance in different
case
Support for Automatic
Reference Counting is
complete across the procedural
and object-oriented code paths
Automatic and high-
performance memory
management

17. Objective C Swift
ERASE TO CODE
Requires many steps to
combine two pieces of
information i.e. in String
Missing in Objective-C
Reduces the amount of
code that is required for
repetitive statements and
string manipulation
Adopts modern programming
language features like adding
two strings together with a “+”
operator

18. Objective C Swift
Memorize special string tokens
(%s, %d, %@)
Objective C is established
Supports string interpolation,
which eliminates the need to
memorize tokens
SWIFT language that is
available today isn’t the
finished product
CONT….

19. Similarities between Swift and Objective C

20. - There is interoperability between Swift and Objective C and
both can be mixed and matched in the same app
- You can have typed collections on account of the
introduction of Generics
- Dynamic evaluation in the development environment, in real
time
- Default Parameter Values
- Difference between struct and class
- Type Inference

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