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Mahesh Radadiya
answered Nov 30 '-1 00:00
Mutable means one can modify it .
NsMutableArray is Array which can modifiable as per need. means you can add , remove or replace object form array,so NsMutableArray have
func insert(Any, at: Int) - insert given object to given index. - in php you do direct change of value at particular index like $array[$index]=$value
removeObject(at:) - remove object form given index. its like unset in php
add(_:) - Inserts a given object at the end of the array.in php . it same as push()
removeLastObject() - Removes the object with the highest-valued index in the array , its like pop() function in php
replaceObject(at:with:) - Replaces the object at index with an object. - in php you can use direct assign $array[$index]=$obj
many other function are there for add remove or replace for mutable array.
NsArray is not mutable means you can not modify after once it initialize .so it dont have add(_:) or removeLastObject or replaceObject function are there. this class have all function which is used to get meta data or data
Hope it help
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