ios memory management

-release pool is destroyed, and does not necessarily destroy the object (for example, if the reference counter of an object is >1, it cannot be destroyed at this time); Since the auto-free pool finally uniformly destroys objects, if an operation is more memory intensive (objects are more or objects occupy more resources), it is best not to put them into the auto-release pool or consider putting them into multiple auto-release pools; The static

heap is going to be applied, when to recycle it, and because of the reason we created the object, memory management actually manages any object that inherits from NSObject, but not the other base data types. So here we should know that the memory management we are talking about in OC is actually the

Technical Points of ARC memory management for iOS developmentThis article comes from my personal ARC Study Notes and aims to summarize the key points of the Automatic Reference Counting (Automatic Reference Counting) Memory Management Technology in

Objective-c memory Management method has a reference counting mechanism, garbage collection mechanism, the automatic release pool. When there is alloc, there is release. iOS should be crash (flash back), 90% is due to memory problems. In the possession of a number of what are the hundreds of classes?, to find

a retaincount++ or Retaincount--The message 2>alloc retain copy mutablecopy new created string requires release3> class method creates a string and directly assigns a string, does not require manual management of memory1.2.4.2 copy and Mutablecopy(only used to copy strings) 1>Copy message, mutable and immutable strings are converted to immutable stringsNsmutablestring *mulstr=[[nsmutablestring alloc]initwithstring:@ "ABC"]; *str=@ "a";

IOS Memory Management Summary I have been learning iPhone programming for a month, and I am still a little unfamiliar with memory management. I want to organize some of my personal points that are concise and contain the following points: Objective-C object generation and re

After IOS5, Apple introduced the arc mechanism, which greatly facilitated the iOS developer's memory management mechanism. When iphone 4 was born why iOS can run a great game in 512M of memory and keep it flowing. Thanks to iOS's very good

reference counting) technology, in this mode the compiler will automatically insert retain, release, autorelease statements in the appropriate place, that is, the compiler will automatically generate memory management code, the liberation of the vast number of programs ape hands, It also basically avoids the memory leak problem, but ...2.

One. Memory management includes memory allocation and memory cleanup1. Scope of memory management : People and objects inheriting from the NSObject class need to be memory-managed, any

-release pool was originally an object, in order to match the arc into a keyword.-(ID) autorelease;Automatic release/Delayed releaseNote: The auto-free pool is like an array that is deferred and does not immediately subtract 1 from the counter, but instead puts the current object into the nearest auto-release pool. When the pool is freed, the elements in each pool are freed once.Note: In an iOS program, each trigger cycle creates and destroys an auto-

iOS Classic test Summary--memory managementMemory management1. What is ARC?ARC is the automatic reference counting automatic reference count, which is automatically added to the retain/release when the program is compiled. Retain count+1 when an object is created, count-1 when the object is release, destroying the object when count=0. Adding the Autoreleasepool object to the program is automatically added b