Post on 18-Aug-2015
Objective-C was created at the Stepstone company in the early
1980s by Brad Cox and
Tom Love
“
”
An announced made by Apple for change in
programming language for iOS and OS X
“
”
Quality is much better than
quantity. One home run is
much better than two doubles
“
”
Shift to SWIFT – The need for something new
Why Apple chose to adopt swift as new change?
Shift to SWIFT for better results………….
Advantages of swift over Objective C
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
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
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
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
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
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….
- 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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