Xcode Manual Memory Management notes

Creating an object procedure

1. Allocating memory space, storing objects

2. Initializing member variables

3. Return the object's pointer address

When the object is created, a reference counter (Retaincount) is automatically created internally, which is the only basis for the system to determine whether an object needs to be recycled.

When retaincount = 0, the system automatically recycles the current object.

[Object Release] RetainCount-1

[Object retain] Retaincount +1

The Dealloc function, which is automatically called when an object is about to be destroyed, notifies the object that it will be destroyed.

Be sure to invoke [super Dealloc] to liberate related objects in the parent class before destroying the object itself.

Manual memory management Principles (pairing principle)

As long as the appearance of New,alloc,retain must appear a release,autorelease.

Xcode Manual Memory Management notes